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Document and Entity Information
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9 Months Ended |
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Oct. 31, 2013
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| Document And Entity Information [Abstract] | |
| Document Type | 10-Q |
| Amendment Flag | false |
| Document Period End Date | Oct. 31, 2013 |
| Document Fiscal Year Focus | 2014 |
| Document Fiscal Period Focus | Q3 |
| Trading Symbol | AMBA |
| Entity Registrant Name | AMBARELLA INC |
| Entity Central Index Key | 0001280263 |
| Current Fiscal Year End Date | --01-31 |
| Entity Filer Category | Non-accelerated Filer |
| Entity Common Stock, Shares Outstanding | 28,212,643 |
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- Details
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- Definition
If the value is true, then the document is an amendment to previously-filed/accepted document. No definition available.
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- Definition
End date of current fiscal year in the format --MM-DD. No definition available.
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- Definition
This is focus fiscal period of the document report. For a first quarter 2006 quarterly report, which may also provide financial information from prior periods, the first fiscal quarter should be given as the fiscal period focus. Values: FY, Q1, Q2, Q3, Q4, H1, H2, M9, T1, T2, T3, M8, CY. No definition available.
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- Definition
This is focus fiscal year of the document report in CCYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition
The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD. No definition available.
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- Definition
The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other". No definition available.
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- Definition
A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. No definition available.
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- Definition
Indicate whether the registrant is one of the following: (1) Large Accelerated Filer, (2) Accelerated Filer, (3) Non-accelerated Filer, (4) Smaller Reporting Company (Non-accelerated) or (5) Smaller Reporting Accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure. No definition available.
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- Definition
The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Trading symbol of an instrument as listed on an exchange. No definition available.
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- Definition
Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards expected to be realized or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after allocation of valuation allowances of noncurrent deferred tax asset attributable to deductible temporary differences and carryforwards. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
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Oct. 31, 2013
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Jan. 31, 2013
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| Statement Of Financial Position [Abstract] | ||
| Preference shares, par value | $ 0.00045 | $ 0.00045 |
| Preference shares, shares authorized | 20,000,000 | 20,000,000 |
| Preference shares, shares issued | 0 | 0 |
| Preference shares, shares outstanding | 0 | 0 |
| Ordinary shares, par value | $ 0.00045 | $ 0.00045 |
| Ordinary shares, shares authorized | 200,000,000 | 200,000,000 |
| Ordinary shares, shares issued | 28,212,643 | 27,035,074 |
| Ordinary shares, shares outstanding | 28,212,643 | 27,035,074 |
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- Definition
Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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Condensed Consolidated Statements of Operations (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
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Oct. 31, 2013
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Oct. 31, 2012
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Oct. 31, 2013
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Oct. 31, 2012
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| Income Statement [Abstract] | ||||
| Revenue | $ 45,990 | $ 35,669 | $ 117,641 | $ 89,548 |
| Cost of revenue | 16,689 | 12,679 | 43,356 | 28,821 |
| Gross profit | 29,301 | 22,990 | 74,285 | 60,727 |
| Operating expenses | ||||
| Research and development | 13,476 | 10,802 | 35,767 | 31,631 |
| Selling, general and administrative | 5,761 | 4,603 | 16,303 | 12,812 |
| Total operating expenses | 19,237 | 15,405 | 52,070 | 44,443 |
| Income from operations | 10,064 | 7,585 | 22,215 | 16,284 |
| Other income (loss), net | (12) | 137 | (28) | 139 |
| Income before income taxes | 10,052 | 7,722 | 22,187 | 16,423 |
| Provision for income taxes | 926 | 1,005 | 2,066 | 1,878 |
| Net income | $ 9,126 | $ 6,717 | $ 20,121 | $ 14,545 |
| Net income per share attributable to ordinary shareholders: | ||||
| Basic | $ 0.33 | $ 0.27 | $ 0.73 | $ 0.55 |
| Diluted | $ 0.30 | $ 0.25 | $ 0.68 | $ 0.51 |
| Weighted-average shares used to compute net income per share attributable to ordinary shareholders: | ||||
| Basic | 27,836,086 | 12,068,819 | 27,432,301 | 9,049,864 |
| Diluted | 30,355,230 | 13,415,091 | 29,754,837 | 10,506,293 |
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- Definition
The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- Details
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| X | ||||||||||
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- Definition
The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition
The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Change in fair value of convertible preference share warrant liability. No definition available.
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| X | ||||||||||
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- Definition
Conversion of preference share warrants to ordinary share warrants. No definition available.
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- Definition
Payment for initial public offering cost. No definition available.
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- Definition
Proceeds from exercise of stock options, warrants and employee stock purchase plan withholding, net of repurchase of stock options. No definition available.
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- Details
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| X | ||||||||||
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- Definition
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Future cash outflow to pay for purchases of fixed assets that have occurred. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The value of the stock converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting revenue yet to be earned for which cash or other forms of consideration was received or recorded as a receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The increase (decrease) during the reporting period in other assets used in operating activities not separately disclosed in the statement of cash flows. May include changes in other current assets, other noncurrent assets, or a combination of other current and noncurrent assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The fair value of liabilities assumed in noncash investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Organization and Summary of Significant Accounting Policies
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9 Months Ended |
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Oct. 31, 2013
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| Accounting Policies [Abstract] | |
| Organization and Summary of Significant Accounting Policies | 1. Organization and Summary of Significant Accounting Policies Organization Ambarella, Inc. (the “Company”) was incorporated in the Cayman Islands on January 15, 2004. The Company is a developer of semiconductor processing solutions for video that enable high-definition video capture, sharing and display. The Company combines its processor design capabilities with its expertise in video and image processing algorithms and software to provide a technology platform that is designed to be easily scalable across multiple applications and enable rapid and efficient product development. The Company’s system-on-a-chip, or SoC, designs fully integrate high-definition video processing, image processing, audio processing and system functions onto a single chip, delivering exceptional video and image quality, differentiated functionality and low power consumption. The Company sells its solutions to leading original design manufacturers, or ODMs, and original equipment manufacturers, or OEMs, globally. Basis of presentation The accompanying unaudited condensed consolidated financial statements have been prepared by the Company in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and, therefore, do not include all information and notes normally provided in audited financial statements. The accounting policies are described in the “Notes to Consolidated Financial Statements” in the Annual Report on Form 10-K for the 2013 fiscal year filed with the SEC on April 4, 2013 (the “Form 10-K”) and updated, as necessary, in this Form 10-Q. The year-end condensed consolidated balance sheet data presented for comparative purposes was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles in the United States (“U.S. GAAP”). In the opinion of management, all adjustments (consisting of normal recurring accruals and adjustments) considered necessary for a fair presentation have been included. The results of operations for any interim period are not necessarily indicative of, nor comparable to, the results of operations for any other interim period or for a full fiscal year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the Form 10-K. Basis of Consolidation The Company’s fiscal year ends on January 31. The condensed consolidated financial statements of the Company and its subsidiaries have been prepared in conformity with U.S. GAAP. All intercompany transactions and balances have been eliminated upon consolidation. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reported periods. Such estimates include (i) the collectability of accounts receivable; (ii) write down for excess and obsolete inventories; (iii) the estimated useful lives of long-lived assets; (iv) impairment of long-lived assets; (v) warranty obligations; (vi) the valuation of stock-based compensation and equity instruments; (vii) the probability of performance objectives achievement; (viii) the realization of tax assets and estimates of tax liabilities, including reserves for uncertain tax positions; and (ix) the recognition and disclosure of contingent liabilities. These estimates and assumptions are based on historical experience and on various other factors which the Company believes to be reasonable under the circumstances. Actual results could differ from those estimates. Concentration of Risk The Company’s products are manufactured, assembled and tested by third-party contractors located primarily in Asia. The Company does not have long-term agreements with these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products which could have a material adverse effect on its business, financial condition and results of operations. A substantial portion of the Company’s revenue is derived from sales through its logistics provider, Wintech Microelectronics Co., Ltd., or Wintech, which serves as the Company’s non-exclusive sales representative in all of Asia other than Japan, and through one large direct ODM customer, Chicony Electronics Co., Ltd., or Chicony. Termination of the relationships with these two customers could result in a temporary or permanent loss of revenue and obligation to repurchase unsold product. Furthermore, any credit issues from these two customers could impair their abilities to make timely payment to the Company. See Note 11 for additional information regarding concentration with these two customers.
Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and accounts receivable. The Company places its cash primarily in checking and money market accounts with reputable financial institutions. Deposits held with these financial institutions may exceed the amount of insurance provided on such deposits. The Company has not experienced any material losses on deposits of its cash. The Company does not hold or issue financial instruments for trading purposes. Inventories The Company records inventories at the lower of cost or market. The cost includes materials and other production costs and is computed using standard cost on a first-in, first-out basis. Inventory reserves are recorded for estimated obsolescence or unmarketable inventories based on forecast of future demand and market conditions. If actual market conditions are less favorable than projected, or if future demand for the Company’s products decrease, additional inventory write-downs may be required. Once inventory is written down, a new accounting basis has been established and, accordingly, any associated reserve is not reversed until the inventory is sold or scrapped. The Company has not recognized any material inventory loss to date. Internal-Use Software The Company capitalizes certain software that is acquired and developed solely for internal use. The capitalization costs include fees for services provided to develop software during the application development stage, costs incurred to obtain software, travel expenses incurred and payroll related costs for employees who are directly associated with and who directly devote time to the project. The capitalization begins when the preliminary project stage is completed and ceases no later than the point at which the project is substantially complete and ready for its intended use after all substantial testing is completed. The internal-use software is amortized over its estimated useful life. Repairs and maintenance are charged to expense as incurred. As of October 31, 2013, the Company has capitalized approximately $1.1 million of internal-use software and has been recorded in property and equipment, net on the condensed consolidated balance sheet. Revenue Recognition The Company generates revenue from the sale of its SoCs to OEMs or ODMs, either directly or through logistics providers. Revenue from sales directly to OEMs and ODMs is recognized upon shipment provided persuasive evidence of an arrangement exists, legal title to the products and risk of ownership have transferred, the fee is fixed or determinable, and collection of the resulting receivable is reasonably assured. The Company provides its logistics providers with the right to return excess levels of inventory and to future price adjustments. Given the inability to reasonably estimate these price changes and returns, revenue and costs related to shipments to logistics providers are deferred until the Company has received notification from its logistics providers that they have sold the Company’s products. Information reported by the Company’s logistics providers includes product resale price, quantity and end customer shipment information as well as remaining inventory on hand. At the time of shipment to a logistics provider, the Company records a trade receivable as there is a legally enforceable right to receive payment, reduces inventory for the value of goods shipped as legal title has passed to the logistics provider and defers the related margin as deferred revenue in the condensed consolidated balance sheets. Any price adjustments are recorded as a change to deferred revenue at the time the adjustments are agreed upon. Arrangements with certain OEM customers provide for pricing that is dependent upon the end products into which the Company’s SoCs are used. These arrangements may also entitle the Company to a share of the product margin ultimately realized by the OEM. The minimum guaranteed amount of revenue related to the sale of products subject to these arrangements is recognized when all other elements of revenue recognition are met. Any amounts at the date of shipment invoiced in excess of the minimum guaranteed contract price are deferred until the additional amounts the Company is entitled to are fixed or determinable. Additional amounts earned by the Company resulting from margin sharing arrangements and determination of the end products into which the products are ultimately incorporated are recognized when end customer sales volume is reported to the Company. The Company also sells a limited amount of software under perpetual licenses that include post-contract customer support, or PCS. The Company does not have evidence of fair value for the PCS and, accordingly, license revenue is recognized ratably over the estimated supporting period in accordance with ASC 985, Software Revenue Recognition. The revenue from those licenses was not material for the nine months ended October 31, 2013 and 2012, respectively. Cost of Revenue Cost of revenue includes cost of materials, cost associated with packaging and assembly, testing and shipping, cost of personnel, stock-based compensation, logistics and quality assurance, warranty cost, royalty expense, write-downs of inventories and allocation of overhead.
Income Taxes The Company records income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in its financial statements or tax returns. In estimating future tax consequences, generally all expected future events other than enactments or changes in the tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. The Company applies authoritative guidance for the accounting for uncertainty in income taxes. The guidance requires that tax effects of a position be recognized only if it is “more likely than not” to be sustained based solely on its technical merits as of the reporting date. Upon estimating the Company’s tax positions and tax benefits, the Company considered and evaluated numerous factors, which may require periodic adjustments and which may not reflect the final tax liabilities. The Company adjusts its financial statements to reflect only those tax positions that are more likely than not to be sustained under examination. As part of the process of preparing condensed consolidated financial statements, the Company is required to estimate its taxes in each of the jurisdictions in which it operates. The Company estimates actual current tax exposure together with assessing temporary differences resulting from differing treatment of items, such as accruals and allowances not currently deductible for tax purposes. These differences result in deferred tax assets, which are included in the condensed consolidated balance sheets. In general, deferred tax assets represent future tax benefits to be received when certain expenses previously recognized in the condensed consolidated statements of operations become deductible expenses under applicable income tax laws, or loss or credit carryforwards are utilized. In assessing whether deferred tax assets may be realized, management considers whether it is more likely than not that some portion or all of deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income. The Company makes estimates and judgments about its future taxable income based on assumptions that are consistent with its plans and estimates. Should the actual amounts differ from estimates, the amount of valuation allowance could be materially impacted. Any adjustment to the deferred tax asset valuation allowance would be recorded in the income statement for the periods in which the adjustment is determined to be required. Net Income Per Ordinary Share The Company applies the two-class method to calculate and present net income per ordinary share. Under the two-class method, net income is allocated between ordinary shares and other participating securities based on their participating rights. Participating securities are defined as securities that may participate in undistributed earnings with ordinary shares, whether that participation is conditioned upon the occurrence of a specified event or not. Basic net income per ordinary share is computed by dividing net income allocable to ordinary shares by the weighted-average number of ordinary shares outstanding for the period. Diluted net income per ordinary share is computed by dividing net income allocable to ordinary shares and income allocable to participating securities, to the extent they are dilutive, by the weighted-average number of ordinary shares outstanding, including the dilutive effects of participating securities on an if-converted basis plus the dilutive effects of ordinary shares. The Company’s potential dilutive ordinary share equivalents consist of incremental ordinary shares issuable upon the exercise of options, upon the issuance of shares pursuant to the ESPP, upon the release of vested restricted stock units, upon the conversion of its redeemable convertible preference shares and upon the exercise of warrants. The Company performs an assessment as to whether instruments granted in stock-based payment transactions are participating securities. Stock-based payment awards that have not yet vested meet the definition of a participating security provided the right to receive the dividend is non-forfeitable and non-contingent. These participating securities should be included in the computation of basic net income per share under the two-class method. The Company has concluded that its non-vested early-exercised options meet the definition of a participating security and should be included in the Company’s computation of basic earnings per ordinary share. Comprehensive Income There are no differences between comprehensive income as defined by ASC 220, Comprehensive Income, and net income as reported in the Company’s condensed consolidated statements of operations.
Recent Accounting Pronouncements In February 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (“AOCI”). This new guidance requires that the Company present either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and the income statement line items affected by the reclassification. If a component is not required to be reclassified to net income in its entirety, the Company would instead cross reference to the related footnote for additional information. This guidance only impacts disclosures within the Company’s consolidated financial statements and notes to the consolidated financial statements and does not result in a change to the accounting treatment of AOCI. This new guidance became effective prospectively for fiscal years, and interim periods with those years, beginning after December 15, 2012. The Company adopted this guidance starting from the first quarter of fiscal year 2014 and the adoption did not have an impact on its financial position, results of operations or disclosures. In July 2013, the FASB issued ASU No. 2013-11, Income Taxes (Topic 740), Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss ,or a Tax Credit Carryforward Exists. The new guidance requires the netting of unrecognized tax benefits (“UTBs”) against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. Under the new standard, UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. The new guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Early adoption and retrospective application are permitted. The Company has not yet adopted this guidance but does not expect the adoption of this guidance to have a significant impact on its financial position, results of operations, statement of cash flows or disclosures. |
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The entire disclosure for the organization, consolidation and basis of presentation of financial statements disclosure, and significant accounting policies of the reporting entity. May be provided in more than one note to the financial statements, as long as users are provided with an understanding of (1) the significant judgments and assumptions made by an enterprise in determining whether it must consolidate a VIE and/or disclose information about its involvement with a VIE, (2) the nature of restrictions on a consolidated VIE's assets reported by an enterprise in its statement of financial position, including the carrying amounts of such assets, (3) the nature of, and changes in, the risks associated with an enterprise's involvement with the VIE, and (4) how an enterprise's involvement with the VIE affects the enterprise's financial position, financial performance, and cash flows. Describes procedure if disclosures are provided in more than one note to the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Inventories
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Oct. 31, 2013
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| Inventories | 2. Inventories Inventory at October 31, 2013 and January 31, 2013 consisted of the following:
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The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Property and Equipment, Net
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Oct. 31, 2013
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| Property and Equipment, Net | 3. Property and Equipment, Net Depreciation expense was approximately $0.3 million and $0.2 million for the three months ended October 31, 2013 and 2012, respectively. Depreciation expense was approximately $0.8 million and $0.5 million for the nine months ended October 31, 2013 and 2012, respectively. Property and equipment at October 31, 2013 and January 31, 2013 consisted of the following:
In March 2013, the Company entered into a lease agreement of approximately 35,000 square feet for its new headquarters located in Santa Clara, California with an initial five-year term. Pursuant to the lease agreement, the Company agreed to pay certain construction costs. As of October 31, 2013, the Company had capitalized approximately $0.7 million of leasehold improvement as a result of the construction, which will be depreciated over the term of the lease. In August 2012, the Company began implementation of its enterprise resources planning (“ERP”) system. As of October 31, 2013, the Company capitalized approximately $1.1 million of internal-use software related to the ERP implementation project and amortized over an estimated economic useful life of three years under a straight-line method. |
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The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Accrued Liabilities
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Oct. 31, 2013
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| Accrued Liabilities | 4. Accrued Liabilities Accrued liabilities at October 31, 2013 and January 31, 2013 consisted of the following:
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The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Deferred Revenue and Deferred Cost
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Oct. 31, 2013
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| Deferred Revenue and Deferred Cost | 5. Deferred Revenue and Deferred Cost Deferred revenue and related cost at October 31, 2013 and January 31, 2013 consisted of the following:
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The entire disclosure for deferred revenues and costs at the end of the reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. Deferred cost is a sum of the carrying amounts as of the balance sheet date of costs capitalized at the end of the reporting period that are expected to be charged against earnings within one year or the normal operating cycle, if longer. No definition available.
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Capital Stock
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Oct. 31, 2013
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| Capital Stock | 6. Capital Stock Preference shares After completion of the Company’s initial public offering, or IPO, a total of 20,000,000 preference shares, with a $0.00045 par value per share, were authorized. There were no preference shares issued and outstanding as of October 31, 2013 and January 31, 2013, respectively. Warrants In connection with a financing agreement in 2004, the Company issued warrants to purchase 36,292 redeemable convertible preference shares at an exercise price of $3.582 per share. Upon the completion of the IPO, the warrants to purchase redeemable convertible preference shares converted to warrants to purchase ordinary shares. As of October 31, 2013, the warrants were fully exercised and were no longer outstanding. Ordinary shares At October 31, 2013 and January 31, 2013, a total of 200,000,000 ordinary shares were authorized. As of October 31, 2013 and January 31, 2013, the following ordinary shares were reserved for future issuance:
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The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Stock-based Compensation
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Oct. 31, 2013
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stock-based Compensation | 7. Stock-based Compensation The following table presents the classification of stock-based compensation for the periods indicated:
As of October 31, 2013, total unrecognized compensation cost related to unvested stock options and unvested restricted stock units was $5.9 million and $18.2 million, respectively, and is expected to be recognized over a weighted-average period of 1.96 years and 3.21 years, respectively. As of January 31, 2013, total unrecognized compensation cost related to unvested stock options and unvested restricted stock units was $7.3 million and $2.4 million, respectively, and is expected to be recognized over a weighted-average period of 2.26 years and 1.77 years, respectively. The following table sets forth the weighted-average assumptions used to estimate the fair value of stock options and employee stock purchase plan awards for the periods indicated:
The following table summarizes stock option activities for the nine months ended October 31, 2013:
Exercisable shares include options with early exercise rights. The vested and expected-to-vest options are calculated based on the vesting schedule of each grant as of the reporting date.
The intrinsic value of options outstanding, exercisable and vested and expected-to-vest are calculated based on the difference between the fair market value of the Company’s ordinary shares on the reporting date and the exercise price. The closing price of the Company’s ordinary shares was $20.55 on October 31, 2013, as reported by the NASDAQ Global Market. The intrinsic value of exercised options is calculated based on the difference between the fair market value of the Company’s ordinary shares on the exercise date and the exercise price. On August 27, 2013, upon recommendation by the Company’s compensation committee, the Company’s board of directors granted awards of restricted stock units (“RSU”) covering a total of 1,058,860 ordinary shares that vest based on service conditions and a total of 154,500 ordinary shares that vest based on a combination of service and performance conditions. The fair value on the grant date was $14.56 per ordinary share. Pursuant to the terms of the service condition awards, 1/16th of the RSUs shall vest every 3 months following the vesting commencement date, so as to be 100% vested on the fourth anniversary of the vesting commencement date. Pursuant to the terms of the performance condition awards, 1/8th of the RSUs shall vest every 3 months following the vesting commencement date, so as to be 100% vested on the second anniversary of the vesting commencement date; provided, however, that notwithstanding the foregoing, the RSUs shall not vest at all until the performance conditions are achieved and are subject to the RSU holder continuing to provide services to the Company through such vesting dates. The vesting commencement date for the performance condition RSUs will begin upon achievement of financial targets for the fiscal year 2014. The performance condition RSUs shall automatically be forfeited in their entirety, without any cost to or action by the Company, if there has been no achievement of the fiscal year 2014 financial targets. The following table summarizes restricted stock unit activities for the nine months ended October 31, 2013:
As of October 31, 2013, the aggregate intrinsic value of unvested restricted stock units was $30.5 million. Non-employee Stock-based Compensation The fair value of awards granted to non-employees is determined on the date of grant and remeasured at the end of each reporting period until such awards vest. The non-employee stock-based compensation was not material for the nine months ended October 31, 2013 and 2012, respectively. |
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The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Net Income Per Ordinary Share
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Oct. 31, 2013
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| Earnings Per Share [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Net Income Per Ordinary Share | 8. Net Income Per Ordinary Share The following table sets forth the computation of basic and diluted net income per ordinary share for the periods indicated:
Earnings per share (“EPS”) of ordinary shares was calculated using the two-class method required for participating securities. Prior to the date of the IPO, all series of redeemable convertible preference shares were considered to be participating securities due to their non-cumulative dividend rights. In connection with the Company’s IPO in October 2012, all outstanding redeemable convertible preference shares converted to ordinary shares. Net income has been allocated to the ordinary shares and participating securities based on their respective rights to share in net income and weighted-average outstanding during the periods. The following weighted-average potentially dilutive securities were excluded from the computation of diluted net income per ordinary share as their effect would have been antidilutive:
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The entire disclosure for earnings per share. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Income Taxes
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Oct. 31, 2013
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| Income Tax Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Income Taxes | 9. Income Taxes The Company reported the following income tax for the periods indicated:
The Company recognized income tax expense of approximately $1.0 million for the three months ended October 31, 2013 and 2012, respectively. The estimated effective tax rate was 9.2% and 13.0% for the three months ended October 31, 2013 and 2012, respectively. The Company recognized income tax expense of approximately $2.1 million and $1.9 million for the nine months ended October 31, 2013 and 2012, respectively. The estimated effective tax rate was 9.3% and 11.4% for the nine months ended October 31, 2013 and 2012, respectively. The effective tax rate for the nine months ended October 31, 2013 was lower than the effective tax rate for the nine months ended October 31, 2012 primarily due to a change in the mix of earnings in various geographic jurisdictions between the two periods. The Company files federal and state income tax returns in the United States and in various foreign jurisdictions. The tax years 2005 to 2013 remain open to examination by U.S. federal tax authorities and the tax years 2004 to 2010 remain open to examination by U.S. state tax authorities. The tax years 2010 to 2013 remain open to examination by material foreign tax authorities. The Company is subject to ongoing tax examinations of our tax returns by the Internal Revenue Service and other tax authorities in various jurisdictions. The Company regularly assesses the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of its provision for income taxes. These assessments can require considerable estimates and judgments. As of October 31, 2013, the gross amount of unrecognized tax benefits was approximately $3.2 million. If the estimates of income tax liabilities prove to be less than the ultimate assessment, then a further charge to expense would be required. If events occur and the payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities would result in tax benefits being recognized in the period in which the Company determines the liabilities are no longer necessary. The Company does not anticipate any material changes to its uncertain tax positions during the next twelve months. |
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The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments and Contingencies
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| Commitments And Contingencies Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Commitments and Contingencies | 10. Commitments and Contingencies The Company leases its principal facilities and time-based software licenses under operating agreements with various expiration dates through April 2018. In March 2013, the Company entered into a lease agreement for approximately 35,000 square feet for its new Santa Clara, California headquarters. The lease has an initial five-year term and terminates in April 2018. The monthly basic rent obligation for this facility initially will be approximately $44,550, increasing annually to approximately $65,400 in 2017. The average monthly basic rent expense over the term of the lease will be approximately $59,800. Net operating lease expenses for the three months ended October 31, 2013 and 2012 were approximately $1.2 million and $1.1 million, respectively. Net operating lease expenses for the nine months ended October 31, 2013 and 2012 were approximately $3.6 million and $3.2 million, respectively. Future annual minimum lease payments under these operating leases with initial lease terms in excess of one year are as follows:
Contract Manufacturer Commitments The Company’s components and products are procured and built by independent contract manufacturers based on sales forecasts. These forecasts include estimates of future demand, historical trends, analysis of sales and marketing activities, and adjustment of overall market conditions. The Company regularly issues purchase orders to independent contract manufacturers which are cancelable only upon the agreement between the Company and the third-party. As of October 31, 2013 and January 31, 2013, total manufacturing purchase commitments were approximately $12.4 million and $15.1 million, respectively.
Indemnification The Company, from time to time, in the normal course of business, indemnifies certain vendors with whom it enters into contractual relationships. The Company has agreed to hold the other party harmless against third-party claims in connection with the Company’s future products. The Company also indemnifies certain customers against third party claims related to certain intellectual property matters. It is not possible to determine the maximum potential amount of liability under these indemnification obligations due to the limited history of prior indemnification claims and the unique facts and circumstances that are likely to be involved in each particular claim. The Company has not made payments under these obligations and no liabilities have been recorded for these obligations on the condensed consolidated balance sheets as of October 31, 2013 and January 31, 2013. |
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| Segment Reporting | 11. Segment Reporting The Company operates in one reportable segment related to the development and sales of low-power, high-definition video products. The Chief Executive Officer of the Company has been identified as the Chief Operating Decision Maker (the “CODM”) and manages the Company’s operations as a whole and for the purpose of evaluating financial performance and allocating resources, the CODM reviews financial information presented on a consolidated basis accompanied by information by customer and geographic region. Geographic Revenue The following table sets forth the Company’s revenue by geographic region for the periods indicated:
As of October 31, 2013, substantially all of the Company’s long-lived tangible assets are located in the Asia Pacific region. Major Customers The customers representing 10% or more of revenue and accounts receivable were Wintech, the Company’s logistic provider, and Chicony, a direct ODM customer, which combined accounted for approximately 86% and 78% of total revenue for the three months ended October 31, 2013 and 2012, respectively, and approximately 85% and 79% of total revenue for the nine months ended October 31, 2013 and 2012, respectively. Accounts receivable with these two customers combined accounted for approximately $22.9 million and $17.6 million as of October 31, 2013 and January 31, 2013, respectively. |
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The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Related-Party Transactions
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| Related Party Transactions [Abstract] | |
| Related-Party Transactions | 12. Related-Party Transactions The Company considers an entity to be a related party if it owns more than 10% of the Company’s total voting stock at the end of each reporting period or if an officer or employee of an entity also serves on the board of directors or if it is a significant shareholder and has material business transactions with the Company. Starting from the fiscal year 2008, the Company entered into several software license agreements with Cadence Design Systems, Inc. (“Cadence”). A member of the Company’s board of directors is also the Chief Executive Officer, President and a Director of Cadence. Under these license agreements, the Company committed to pay an aggregate amount of $10.2 million payable through January 2014. The Company paid $0.4 million in license fees in each of the three months ended October 31, 2013 and 2012. The Company paid $1.3 million in license fees in each of the nine months ended October 31, 2013 and 2012. Operating lease expenses related to these agreements included in research and development cost were approximately $0.4 million in each of the three months ended October 31, 2013 and 2012. Operating lease expenses related to these agreements included in research and development cost were approximately $1.3 million in each of the nine months ended October 31, 2013 and 2012.
In addition to the related party transactions noted above, the Company recognized revenue from sales to Wintech Microelectronics Co., Ltd, or Wintech, the Company’s logistics provider. Wintech, along with an affiliate, owned approximately 4.6% of the Company’s voting stock as of January 31, 2013, but has sold such stock and is no longer a significant shareholder of the Company. The Company recognized revenue from sales to Wintech of approximately $27.7 million and $21.4 million for the three months ended October 31, 2013 and 2012, respectively. The Company recognized revenue from sales to Wintech of approximately $63.3 million and $60.8 million for the nine months ended October 31, 2013 and 2012, respectively. As of October 31, 2013 and January 31, 2013, the Company had receivables from Wintech of approximately $11.5 million and $8.2 million, respectively. |
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The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Organization and Summary of Significant Accounting Policies (Policies)
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| Accounting Policies [Abstract] | |
| Organization | Organization Ambarella, Inc. (the “Company”) was incorporated in the Cayman Islands on January 15, 2004. The Company is a developer of semiconductor processing solutions for video that enable high-definition video capture, sharing and display. The Company combines its processor design capabilities with its expertise in video and image processing algorithms and software to provide a technology platform that is designed to be easily scalable across multiple applications and enable rapid and efficient product development. The Company’s system-on-a-chip, or SoC, designs fully integrate high-definition video processing, image processing, audio processing and system functions onto a single chip, delivering exceptional video and image quality, differentiated functionality and low power consumption. The Company sells its solutions to leading original design manufacturers, or ODMs, and original equipment manufacturers, or OEMs, globally. |
| Basis of presentation | Basis of presentation The accompanying unaudited condensed consolidated financial statements have been prepared by the Company in accordance with the instructions to Form 10-Q pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) and, therefore, do not include all information and notes normally provided in audited financial statements. The accounting policies are described in the “Notes to Consolidated Financial Statements” in the Annual Report on Form 10-K for the 2013 fiscal year filed with the SEC on April 4, 2013 (the “Form 10-K”) and updated, as necessary, in this Form 10-Q. The year-end condensed consolidated balance sheet data presented for comparative purposes was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles in the United States (“U.S. GAAP”). In the opinion of management, all adjustments (consisting of normal recurring accruals and adjustments) considered necessary for a fair presentation have been included. The results of operations for any interim period are not necessarily indicative of, nor comparable to, the results of operations for any other interim period or for a full fiscal year. These unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in the Form 10-K. |
| Basis of Consolidation | Basis of Consolidation The Company’s fiscal year ends on January 31. The condensed consolidated financial statements of the Company and its subsidiaries have been prepared in conformity with U.S. GAAP. All intercompany transactions and balances have been eliminated upon consolidation. |
| Use of Estimates | Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during the reported periods. Such estimates include (i) the collectability of accounts receivable; (ii) write down for excess and obsolete inventories; (iii) the estimated useful lives of long-lived assets; (iv) impairment of long-lived assets; (v) warranty obligations; (vi) the valuation of stock-based compensation and equity instruments; (vii) the probability of performance objectives achievement; (viii) the realization of tax assets and estimates of tax liabilities, including reserves for uncertain tax positions; and (ix) the recognition and disclosure of contingent liabilities. These estimates and assumptions are based on historical experience and on various other factors which the Company believes to be reasonable under the circumstances. Actual results could differ from those estimates. |
| Concentration of Risk | Concentration of Risk The Company’s products are manufactured, assembled and tested by third-party contractors located primarily in Asia. The Company does not have long-term agreements with these contractors. A significant disruption in the operations of one or more of these contractors would impact the production of the Company’s products which could have a material adverse effect on its business, financial condition and results of operations. A substantial portion of the Company’s revenue is derived from sales through its logistics provider, Wintech Microelectronics Co., Ltd., or Wintech, which serves as the Company’s non-exclusive sales representative in all of Asia other than Japan, and through one large direct ODM customer, Chicony Electronics Co., Ltd., or Chicony. Termination of the relationships with these two customers could result in a temporary or permanent loss of revenue and obligation to repurchase unsold product. Furthermore, any credit issues from these two customers could impair their abilities to make timely payment to the Company. See Note 11 for additional information regarding concentration with these two customers.
Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash and accounts receivable. The Company places its cash primarily in checking and money market accounts with reputable financial institutions. Deposits held with these financial institutions may exceed the amount of insurance provided on such deposits. The Company has not experienced any material losses on deposits of its cash. The Company does not hold or issue financial instruments for trading purposes. |
| Inventories | Inventories The Company records inventories at the lower of cost or market. The cost includes materials and other production costs and is computed using standard cost on a first-in, first-out basis. Inventory reserves are recorded for estimated obsolescence or unmarketable inventories based on forecast of future demand and market conditions. If actual market conditions are less favorable than projected, or if future demand for the Company’s products decrease, additional inventory write-downs may be required. Once inventory is written down, a new accounting basis has been established and, accordingly, any associated reserve is not reversed until the inventory is sold or scrapped. The Company has not recognized any material inventory loss to date. |
| Internal-Use Software | Internal-Use Software The Company capitalizes certain software that is acquired and developed solely for internal use. The capitalization costs include fees for services provided to develop software during the application development stage, costs incurred to obtain software, travel expenses incurred and payroll related costs for employees who are directly associated with and who directly devote time to the project. The capitalization begins when the preliminary project stage is completed and ceases no later than the point at which the project is substantially complete and ready for its intended use after all substantial testing is completed. The internal-use software is amortized over its estimated useful life. Repairs and maintenance are charged to expense as incurred. As of October 31, 2013, the Company has capitalized approximately $1.1 million of internal-use software and has been recorded in property and equipment, net on the condensed consolidated balance sheet. |
| Revenue Recognition | Revenue Recognition The Company generates revenue from the sale of its SoCs to OEMs or ODMs, either directly or through logistics providers. Revenue from sales directly to OEMs and ODMs is recognized upon shipment provided persuasive evidence of an arrangement exists, legal title to the products and risk of ownership have transferred, the fee is fixed or determinable, and collection of the resulting receivable is reasonably assured. The Company provides its logistics providers with the right to return excess levels of inventory and to future price adjustments. Given the inability to reasonably estimate these price changes and returns, revenue and costs related to shipments to logistics providers are deferred until the Company has received notification from its logistics providers that they have sold the Company’s products. Information reported by the Company’s logistics providers includes product resale price, quantity and end customer shipment information as well as remaining inventory on hand. At the time of shipment to a logistics provider, the Company records a trade receivable as there is a legally enforceable right to receive payment, reduces inventory for the value of goods shipped as legal title has passed to the logistics provider and defers the related margin as deferred revenue in the condensed consolidated balance sheets. Any price adjustments are recorded as a change to deferred revenue at the time the adjustments are agreed upon. Arrangements with certain OEM customers provide for pricing that is dependent upon the end products into which the Company’s SoCs are used. These arrangements may also entitle the Company to a share of the product margin ultimately realized by the OEM. The minimum guaranteed amount of revenue related to the sale of products subject to these arrangements is recognized when all other elements of revenue recognition are met. Any amounts at the date of shipment invoiced in excess of the minimum guaranteed contract price are deferred until the additional amounts the Company is entitled to are fixed or determinable. Additional amounts earned by the Company resulting from margin sharing arrangements and determination of the end products into which the products are ultimately incorporated are recognized when end customer sales volume is reported to the Company. The Company also sells a limited amount of software under perpetual licenses that include post-contract customer support, or PCS. The Company does not have evidence of fair value for the PCS and, accordingly, license revenue is recognized ratably over the estimated supporting period in accordance with ASC 985, Software Revenue Recognition. The revenue from those licenses was not material for the nine months ended October 31, 2013 and 2012, respectively. |
| Cost of Revenue | Cost of Revenue Cost of revenue includes cost of materials, cost associated with packaging and assembly, testing and shipping, cost of personnel, stock-based compensation, logistics and quality assurance, warranty cost, royalty expense, write-downs of inventories and allocation of overhead. |
| Income Taxes | Income Taxes The Company records income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in its financial statements or tax returns. In estimating future tax consequences, generally all expected future events other than enactments or changes in the tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. The Company applies authoritative guidance for the accounting for uncertainty in income taxes. The guidance requires that tax effects of a position be recognized only if it is “more likely than not” to be sustained based solely on its technical merits as of the reporting date. Upon estimating the Company’s tax positions and tax benefits, the Company considered and evaluated numerous factors, which may require periodic adjustments and which may not reflect the final tax liabilities. The Company adjusts its financial statements to reflect only those tax positions that are more likely than not to be sustained under examination. As part of the process of preparing condensed consolidated financial statements, the Company is required to estimate its taxes in each of the jurisdictions in which it operates. The Company estimates actual current tax exposure together with assessing temporary differences resulting from differing treatment of items, such as accruals and allowances not currently deductible for tax purposes. These differences result in deferred tax assets, which are included in the condensed consolidated balance sheets. In general, deferred tax assets represent future tax benefits to be received when certain expenses previously recognized in the condensed consolidated statements of operations become deductible expenses under applicable income tax laws, or loss or credit carryforwards are utilized. In assessing whether deferred tax assets may be realized, management considers whether it is more likely than not that some portion or all of deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income. The Company makes estimates and judgments about its future taxable income based on assumptions that are consistent with its plans and estimates. Should the actual amounts differ from estimates, the amount of valuation allowance could be materially impacted. Any adjustment to the deferred tax asset valuation allowance would be recorded in the income statement for the periods in which the adjustment is determined to be required. |
| Net Income Per Ordinary Share | Net Income Per Ordinary Share The Company applies the two-class method to calculate and present net income per ordinary share. Under the two-class method, net income is allocated between ordinary shares and other participating securities based on their participating rights. Participating securities are defined as securities that may participate in undistributed earnings with ordinary shares, whether that participation is conditioned upon the occurrence of a specified event or not. Basic net income per ordinary share is computed by dividing net income allocable to ordinary shares by the weighted-average number of ordinary shares outstanding for the period. Diluted net income per ordinary share is computed by dividing net income allocable to ordinary shares and income allocable to participating securities, to the extent they are dilutive, by the weighted-average number of ordinary shares outstanding, including the dilutive effects of participating securities on an if-converted basis plus the dilutive effects of ordinary shares. The Company’s potential dilutive ordinary share equivalents consist of incremental ordinary shares issuable upon the exercise of options, upon the issuance of shares pursuant to the ESPP, upon the release of vested restricted stock units, upon the conversion of its redeemable convertible preference shares and upon the exercise of warrants. The Company performs an assessment as to whether instruments granted in stock-based payment transactions are participating securities. Stock-based payment awards that have not yet vested meet the definition of a participating security provided the right to receive the dividend is non-forfeitable and non-contingent. These participating securities should be included in the computation of basic net income per share under the two-class method. The Company has concluded that its non-vested early-exercised options meet the definition of a participating security and should be included in the Company’s computation of basic earnings per ordinary share. |
| Comprehensive Income | Comprehensive Income There are no differences between comprehensive income as defined by ASC 220, Comprehensive Income, and net income as reported in the Company’s condensed consolidated statements of operations. |
| Recent Accounting Pronouncements | Recent Accounting Pronouncements In February 2013, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (“AOCI”). This new guidance requires that the Company present either in a single note or parenthetically on the face of the financial statements, the effect of significant amounts reclassified from each component of accumulated other comprehensive income based on its source and the income statement line items affected by the reclassification. If a component is not required to be reclassified to net income in its entirety, the Company would instead cross reference to the related footnote for additional information. This guidance only impacts disclosures within the Company’s consolidated financial statements and notes to the consolidated financial statements and does not result in a change to the accounting treatment of AOCI. This new guidance became effective prospectively for fiscal years, and interim periods with those years, beginning after December 15, 2012. The Company adopted this guidance starting from the first quarter of fiscal year 2014 and the adoption did not have an impact on its financial position, results of operations or disclosures.
In July 2013, the FASB issued ASU No. 2013-11, Income Taxes (Topic 740), Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss ,or a Tax Credit Carryforward Exists. The new guidance requires the netting of unrecognized tax benefits (“UTBs”) against a deferred tax asset for a loss or other carryforward that would apply in settlement of the uncertain tax positions. Under the new standard, UTBs will be netted against all available same-jurisdiction loss or other tax carryforwards that would be utilized, rather than only against carryforwards that are created by the UTBs. The new guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Early adoption and retrospective application are permitted. The Company has not yet adopted this guidance but does not expect the adoption of this guidance to have a significant impact on its financial position, results of operations, statement of cash flows or disclosures. |
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Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for recognition of costs in the period which correspond to the sales and revenue categories presented in the statement of operations. The accounting policy may include the amount and nature of costs incurred, provisions associated with inventories, purchase discounts, freight and other costs included in cost of sales incurred and recorded in the period. This disclosure also includes the nature of costs of sales incurred and recorded in the statement of operations for the period relating to transactions with related parties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for costs incurred when both (1) the software is acquired, internally developed, or modified solely to meet the entity's internal needs, and (2) during the software's development or modification, no substantive plan exists or is being developed to market the software externally. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for major classes of inventories, bases of stating inventories (for example, lower of cost or market), methods by which amounts are added and removed from inventory classes (for example, FIFO, LIFO, or average cost), loss recognition on impairment of inventories, and situations in which inventories are stated above cost. If inventory is carried at cost, this disclosure includes the nature of the cost elements included in inventory. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| Schedule of Inventory | Inventory at October 31, 2013 and January 31, 2013 consisted of the following:
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| Schedule of Property and Equipment | Property and equipment at October 31, 2013 and January 31, 2013 consisted of the following:
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Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Oct. 31, 2013
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| Payables And Accruals [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Accrued Liabilities | Accrued liabilities at October 31, 2013 and January 31, 2013 consisted of the following:
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of the components of accrued liabilities. No definition available.
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Deferred Revenue and Deferred Cost (Tables)
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9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
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| Revenue Recognition [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Deferred Revenue and Related Cost | Deferred revenue and related cost at October 31, 2013 and January 31, 2013 consisted of the following:
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| X | ||||||||||
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- Definition
Deferred Revenue And Deferred Cost Table [Text Block] No definition available.
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| X | ||||||||||
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- Details
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Capital Stock (Tables)
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9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
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| Equity [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Ordinary Shares Reserved for Future Issuance | As of October 31, 2013 and January 31, 2013, the following ordinary shares were reserved for future issuance:
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| X | ||||||||||
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- Definition
Summary Of Ordinary Shares Reserved For Future Issuance Table [Text Block] No definition available.
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| X | ||||||||||
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- Details
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Stock-based Compensation (Tables)
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9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
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| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Classification of Stock-based Compensation | The following table presents the classification of stock-based compensation for the periods indicated:
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| Weighted-Average Assumptions Used to Estimate Fair Value | The following table sets forth the weighted-average assumptions used to estimate the fair value of stock options and employee stock purchase plan awards for the periods indicated:
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| Stock Option Activities | The following table summarizes stock option activities for the nine months ended October 31, 2013:
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| Restricted Stock Unit Activities | The following table summarizes restricted stock unit activities for the nine months ended October 31, 2013:
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Definition
Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Net Income Per Ordinary Share (Tables)
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9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
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| Earnings Per Share [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Computation of Basic and Diluted Net Income Per Ordinary Share | The following table sets forth the computation of basic and diluted net income per ordinary share for the periods indicated:
|
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| Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Income Per Ordinary Share | The following weighted-average potentially dilutive securities were excluded from the computation of diluted net income per ordinary share as their effect would have been antidilutive:
|
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| X | ||||||||||
|
- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Income Taxes (Tables)
|
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
|
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| Income Tax Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of Reported Income Tax | The Company reported the following income tax for the periods indicated:
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| X | ||||||||||
|
- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments and Contingencies (Tables)
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9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
|
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| Commitments And Contingencies Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Future Annual Minimum Lease Payments | Future annual minimum lease payments under these operating leases with initial lease terms in excess of one year are as follows:
|
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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|
Segment Reporting (Tables)
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9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Oct. 31, 2013
|
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Company's Revenue by Geographic Region | The following table sets forth the Company’s revenue by geographic region for the periods indicated:
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| X | ||||||||||
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- Definition
Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
|
|
Organization and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
Oct. 31, 2013
|
|---|---|
| Organization Consolidation And Presentation Of Financial Statements [Abstract] | |
| Capitalizes internal-use software | $ 1.1 |
| X | ||||||||||
|
- Definition
Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
|
- Details
|
|
Inventories - Schedule of Inventory (Detail) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2013
|
Jan. 31, 2013
|
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Work-in-progress | $ 8,322 | $ 3,012 |
| Finished goods | 4,688 | 5,906 |
| Total | $ 13,010 | $ 8,918 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
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- Definition
Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Property and Equipment, Net - Additional Information (Detail) (USD $)
|
1 Months Ended | 3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|
|
Mar. 31, 2013
sqft
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Property, Plant and Equipment [Line Items] | |||||
| Depreciation | $ 300,000 | $ 200,000 | $ 789,000 | $ 545,000 | |
| Lease agreement new headquarters | 35,000 | ||||
| Initial lease term | 5 years | ||||
| Capitalized internal-use software | 1,100,000 | 1,100,000 | |||
|
Leasehold improvement [Member]
|
|||||
| Property, Plant and Equipment [Line Items] | |||||
| Capitalized leasehold improvement | 700,000 | 700,000 | |||
|
Internal-use software [Member]
|
|||||
| Property, Plant and Equipment [Line Items] | |||||
| Capitalized internal-use software | $ 1,100,000 | $ 1,100,000 | |||
| Estimated economic useful life | 3 years | ||||
| X | ||||||||||
|
- Definition
Capitalized Leasehold Improvement For New Office Lease No definition available.
|
| X | ||||||||||
|
- Definition
Lease Agreement Area Of Office Space No definition available.
|
| X | ||||||||||
|
- Definition
Office Lease Initial Term No definition available.
|
| X | ||||||||||
|
- Definition
Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
|
- Details
|
|
Property and Equipment, Net - Schedule of Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2013
|
Jan. 31, 2013
|
|---|---|---|
| Property Plant And Equipment [Abstract] | ||
| Computer equipment and software | $ 4,247 | $ 2,810 |
| Machinery and equipment | 2,112 | 2,050 |
| Furniture and fixtures | 413 | 397 |
| Leasehold improvements | 1,195 | 642 |
| Construction in progress | 827 | |
| Property and equipment, gross | 7,967 | 6,726 |
| Less: accumulated depreciation and amortization | (4,942) | (4,190) |
| Total property and equipment, net | $ 3,025 | $ 2,536 |
| X | ||||||||||
|
- Definition
Computer equipment and software. No definition available.
|
| X | ||||||||||
|
- Definition
Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, machinery and equipment and office equipment. No definition available.
|
| X | ||||||||||
|
- Definition
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Accrued Liabilities - Schedule of Accrued Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2013
|
Jan. 31, 2013
|
|---|---|---|
| Payables And Accruals [Abstract] | ||
| Accrued employee compensation | $ 7,385 | $ 8,599 |
| Refundable exercised unvested options | 91 | 210 |
| Accrued warranty | 292 | 352 |
| Accrued rebates | 257 | 272 |
| Accrued product development costs | 3,019 | 2,875 |
| Other accrued liabilities | 1,022 | 1,734 |
| Total accrued liabilities | $ 12,066 | $ 14,042 |
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated research and development cost. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). No definition available.
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated rebates granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). No definition available.
|
| X | ||||||||||
|
- Definition
Carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to unvested stock options exercised but subject to repurchase by the entity. No definition available.
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Deferred Revenue and Deferred Cost - Schedule of Deferred Revenue and Related Cost (Detail) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2013
|
Jan. 31, 2013
|
|---|---|---|
| Deferred Revenue Arrangement [Line Items] | ||
| Deferred cost of revenue on product shipments | $ (1,335) | $ (861) |
| Deferred revenue | 3,552 | 3,451 |
|
Product shipments [Member]
|
||
| Deferred Revenue Arrangement [Line Items] | ||
| Deferred revenue | 4,487 | 3,827 |
|
Licenses [Member]
|
||
| Deferred Revenue Arrangement [Line Items] | ||
| Deferred revenue | $ 400 | $ 485 |
| X | ||||||||||
|
- Definition
Deferred cost associated with deferred revenue from product shipments. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Capital Stock - Additional Information (Detail) (USD $)
|
Oct. 31, 2013
|
Jan. 31, 2013
|
|---|---|---|
| Equity [Abstract] | ||
| Preference shares, shares authorized | 20,000,000 | 20,000,000 |
| Preference shares, par value | $ 0.00045 | $ 0.00045 |
| Preference shares, shares issued | 0 | 0 |
| Preference shares, shares outstanding | 0 | 0 |
| Company issued warrants to purchase redeemable convertible preference shares, exercise price | 3.582 | |
| Company issued warrants to purchase redeemable convertible preference shares | 36,292 | |
| Total ordinary share warrants outstanding | 0 | 36,292 |
| Total ordinary shares authorized | 200,000,000 | 200,000,000 |
| X | ||||||||||
|
- Definition
The ordinary share warrants that validly exist and are outstanding as of the balance sheet date. No definition available.
|
| X | ||||||||||
|
- Definition
Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Capital Stock - Schedule of Ordinary Shares Reserved for Future Issuance (Detail)
|
Oct. 31, 2013
|
Jan. 31, 2013
|
|---|---|---|
|
Options and restricted stock units [Member]
|
||
| Class of Stock [Line Items] | ||
| Shares reserved | 6,235,400 | 5,818,126 |
|
Employee stock purchase plan [Member]
|
||
| Class of Stock [Line Items] | ||
| Shares reserved | 456,410 | 460,445 |
|
Warrants [Member]
|
||
| Class of Stock [Line Items] | ||
| Shares reserved | 36,292 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Stock-based Compensation - Classification of Stock-based Compensation (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Stock-based compensation: | ||||
| Total stock-based compensation | $ 2,461 | $ 1,485 | $ 5,660 | $ 3,441 |
|
Cost of revenue [Member]
|
||||
| Stock-based compensation: | ||||
| Total stock-based compensation | 47 | 30 | 115 | 59 |
|
Research and development [Member]
|
||||
| Stock-based compensation: | ||||
| Total stock-based compensation | 1,385 | 905 | 3,259 | 1,979 |
|
Selling, general and administrative [Member]
|
||||
| Stock-based compensation: | ||||
| Total stock-based compensation | $ 1,029 | $ 550 | $ 2,286 | $ 1,403 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Stock-based Compensation - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified |
9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 1 Months Ended | |||
|---|---|---|---|---|---|---|---|---|
|
Oct. 31, 2013
|
Aug. 27, 2013
|
Oct. 31, 2013
Restricted stock units [Member]
|
Jan. 31, 2013
Restricted stock units [Member]
|
Oct. 31, 2013
Employee stock option [Member]
|
Jan. 31, 2013
Employee stock option [Member]
|
Aug. 27, 2013
Service condition restricted stock units [Member]
|
Aug. 27, 2013
Service and performance conditioned restricted stock units [Member]
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||
| Total unrecognized compensation cost, stock options | $ 5.9 | $ 7.3 | ||||||
| Total unrecognized compensation cost, restricted stock units | 18.2 | 2.4 | ||||||
| Weighted-average period | 3 years 2 months 16 days | 1 year 9 months 7 days | 1 year 11 months 16 days | 2 years 3 months 4 days | ||||
| Closing price of ordinary shares | $ 20.55 | |||||||
| Ordinary shares granted as awards of restricted stock units | 1,240,472 | 1,058,860 | 154,500 | |||||
| Fair value on grant date per ordinary share | $ 14.56 | |||||||
| Vesting period of RSUs | 1/16th of the RSUs shall vest each 3 months following the vesting commencement date, so as to be 100% vested on the fourth anniversary of the vesting commencement date | 1/8th of the RSUs shall vest each 3 months following the vesting commencement date, so as to be 100% vested on the second anniversary of the vesting commencement date | ||||||
| Aggregate intrinsic value of unvested restricted stock units | $ 30.5 | |||||||
| X | ||||||||||
|
- Definition
The intrinsic value of restricted stock units under equity compensation plan (excluding stock options), as calculated by applying closing market price of ordinary shares to total unvested awards at balance sheet date. No definition available.
|
| X | ||||||||||
|
- Definition
Closing market price of ordinary shares on NASDAQ on the last day of reporting period. No definition available.
|
| X | ||||||||||
|
- Definition
The grant date fair value of restricted stock units per share. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. No definition available.
|
| X | ||||||||||
|
- Definition
Unrecognized cost of unvested options awarded to employees as compensation. No definition available.
|
| X | ||||||||||
|
- Definition
Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Stock-based Compensation - Weighted-Average Assumptions Used to Estimate Fair Value (Detail)
|
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
|
Options to purchase ordinary shares [Member]
|
||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Volatility | 65.00% | 66.00% | 65.00% | 66.00% |
| Risk-free interest rate | 2.03% | 0.89% | 1.44% | 0.93% |
| Expected term (years) | 6 years 18 days | 6 years 18 days | 6 years 18 days | 6 years 18 days |
| Dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
|
Employee stock purchase plan awards [Member]
|
||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Volatility | 52.00% | 51.00% | 52.00% | 51.00% |
| Risk-free interest rate | 0.04% | 0.18% | 0.04% | 0.18% |
| Expected term (years) | 6 months | 11 months 9 days | 6 months | 11 months 9 days |
| Dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
| X | ||||||||||
|
- Definition
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The number of shares into which stock options outstanding as of the balance sheet date can be currently converted under the option plan. No definition available.
|
| X | ||||||||||
|
- Definition
Amount of difference between fair value of the underlying stock and exercise price of options currently outstanding and exercisable. No definition available.
|
| X | ||||||||||
|
- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance of options currently outstanding and exercisable under the stock option plan. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average remaining contractual term for options currently outstanding and exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Gross number of share options (or share units) granted during the period. No definition available.
|
| X | ||||||||||
|
- Definition
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
|
| X | ||||||||||
|
- Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
|
| X | ||||||||||
|
- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Stock-based Compensation - Restricted Stock Unit Activities (Detail) (Restricted stock units [Member], USD $)
|
9 Months Ended |
|---|---|
|
Oct. 31, 2013
|
|
|
Restricted stock units [Member]
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Shares, Unvested, beginning balance | 339,217 |
| Shares, Granted | 1,240,472 |
| Shares, Released | (85,806) |
| Shares, Forfeited | (10,052) |
| Shares, Unvested, ending balance | 1,483,831 |
| Weighted-Average Grant-Date Fair Value, Unvested beginning balance | $ 9.99 |
| Weighted-Average Grant-Date Fair Value, Granted | $ 14.58 |
| Weighted-Average Grant-Date Fair Value, Released | $ 10.19 |
| Weighted-Average Grant-Date Fair Value, Forfeited | $ 10.63 |
| Weighted-Average Grant-Date Fair Value, Unvested ending balance | $ 13.81 |
| X | ||||||||||
|
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Net Income Per Ordinary Share - Computation of Basic and Diluted Net Income Per Ordinary Share (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Numerator: | ||||
| Net income | $ 9,126 | $ 6,717 | $ 20,121 | $ 14,545 |
| Less: amount allocable to preference shareholders | (3,456) | (9,517) | ||
| Less: amount allocable to unvested early exercised options | (8) | (18) | (27) | (53) |
| Net income allocable to ordinary shareholders - basic | 9,118 | 3,243 | 20,094 | 4,975 |
| Undistributed earnings reallocated to ordinary shareholders | 155 | 2 | 432 | |
| Net income allocable to ordinary shareholders - diluted | $ 9,118 | $ 3,398 | $ 20,096 | $ 5,407 |
| Denominator: | ||||
| Weighted-average ordinary shares outstanding | 27,861,176 | 12,137,555 | 27,469,309 | 9,146,617 |
| Less: weighted-average unvested early exercised options subject to repurchase | (25,090) | (68,736) | (37,008) | (96,753) |
| Weighted-average ordinary shares - basic | 27,836,086 | 12,068,819 | 27,432,301 | 9,049,864 |
| Effect of potentially dilutive securities: | ||||
| Employee stock options | 2,082,777 | 1,346,272 | 1,939,389 | 1,456,429 |
| Restricted stock units | 313,832 | 204,971 | ||
| Employee stock purchase plan | 122,535 | 174,877 | ||
| Warrants to purchase ordinary shares | 3,299 | |||
| Weighted-average ordinary shares - diluted | 30,355,230 | 13,415,091 | 29,754,837 | 10,506,293 |
| Net income per ordinary share: | ||||
| Basic | $ 0.33 | $ 0.27 | $ 0.73 | $ 0.55 |
| Diluted | $ 0.30 | $ 0.25 | $ 0.68 | $ 0.51 |
| X | ||||||||||
|
- Definition
Additional undistributed earnings allocated to ordinary shareholders as a result of potentially dilutive securities using the treasury stock method. No definition available.
|
| X | ||||||||||
|
- Definition
Net income after adjustments for non-cumulative dividends and other adjustment on preference shares and undistributed earnings allocated to participating securities under the two-class method. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Number of [basic] shares or units, determined by relating the portion of time within a reporting period that ordinary shares or units have been outstanding to the total time in that period. No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of equity unit purchase agreements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Nonvested equity-based payment awards that contain forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) that result in incremental common shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Earnings allocated (not distributed) to participating securities under the two-class method to the extent that participating securities may share in earnings as if all of the earnings for the period had been distributed. No definition available.
|
| X | ||||||||||
|
- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Number of shares of common stock subject to repurchase or cancellation determined by relating the portion of time within a reporting period that these shares have been outstanding to the total time in that period. Common stock subject to repurchase are outstanding common shares that are contingently returnable (that is, subject to recall). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
|
Income Taxes - Summary of Reported Income Tax (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Income Tax Disclosure [Abstract] | ||||
| Income tax expense | $ 926 | $ 1,005 | $ 2,066 | $ 1,878 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Income Taxes - Additional Information (Detail) (USD $)
|
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Income Tax Disclosure [Abstract] | ||||
| Income tax expense | $ 926,000 | $ 1,005,000 | $ 2,066,000 | $ 1,878,000 |
| Estimated effective tax rate | 9.20% | 13.00% | 9.30% | 11.40% |
| Unrecognized tax benefits | $ 3,200,000 | $ 3,200,000 | ||
| X | ||||||||||
|
- Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Commitments and Contingencies - Additional Information (Detail) (USD $)
|
1 Months Ended | 3 Months Ended | 9 Months Ended | 1 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2013
sqft
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Jan. 31, 2013
|
May 31, 2013
2017 [Member]
|
Oct. 31, 2013
Indemnification Agreement [Member]
|
Jan. 31, 2013
Indemnification Agreement [Member]
|
|
| Loss Contingencies [Line Items] | |||||||||
| Net operating lease expenses | $ 1,200,000 | $ 1,100,000 | $ 3,600,000 | $ 3,200,000 | |||||
| Lease agreement rental area in square feet | 35,000 | ||||||||
| Initial lease term | 5 years | ||||||||
| Lease termination year | 2018-04 | ||||||||
| Monthly basic rent obligation | 44,550 | 65,400 | |||||||
| Average monthly basic rent expense | 59,800 | ||||||||
| Total manufacturing purchase commitments | 12,400,000 | 12,400,000 | 15,100,000 | ||||||
| Payments under indemnification obligations | 0 | 0 | |||||||
| Liabilities recorded under indemnification obligations | $ 0 | $ 0 | |||||||
| X | ||||||||||
|
- Definition
Manufacturing purchase commitment within one year or operating cycle, if longer. No definition available.
|
| X | ||||||||||
|
- Definition
Office Lease Initial Term No definition available.
|
| X | ||||||||||
|
- Definition
Office lease monthly base rental payment. No definition available.
|
| X | ||||||||||
|
- Definition
Office Lease Rental Area No definition available.
|
| X | ||||||||||
|
- Definition
Office Leases Average Base Rent Expense No definition available.
|
| X | ||||||||||
|
- Definition
Office Lease Termination No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of loss contingency liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of damages paid to the plaintiff in the legal matter. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Commitments and Contingencies - Future Annual Minimum Lease Payments (Detail) (USD $)
In Thousands, unless otherwise specified |
Oct. 31, 2013
|
|---|---|
| Commitments And Contingencies Disclosure [Abstract] | |
| 2014 | $ 1,144 |
| 2015 | 1,702 |
| 2016 | 1,670 |
| 2017 | 1,492 |
| 2018 | 1,386 |
| Total future annual minimum lease payments | $ 7,394 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Segment Reporting - Company's Revenue by Geographic Region (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
|
| Revenue from External Customer [Line Items] | ||||
| Total revenue | $ 45,990 | $ 35,669 | $ 117,641 | $ 89,548 |
|
Hong Kong [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total revenue | 39,502 | 31,036 | 101,471 | 77,126 |
|
Asia Pacific [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total revenue | 942 | 63 | 1,644 | 314 |
|
United States [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total revenue | 1,710 | 1,931 | 5,557 | 6,335 |
|
North America [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total revenue | 1,369 | 783 | 3,402 | 1,431 |
|
Europe [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Total revenue | $ 2,467 | $ 1,856 | $ 5,567 | $ 4,342 |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Segment Reporting - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Jan. 31, 2013
|
|
| Concentration Risk [Line Items] | |||||
| Accounts receivable | $ 25,449 | $ 25,449 | $ 20,153 | ||
|
Wintech And Chicony [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Accounts receivable | $ 22,900 | $ 22,900 | $ 17,600 | ||
|
Wintech And Chicony [Member] | Accounts Receivable [Member] | Credit Concentration Risk [Member] | Minimum [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Percentage of revenue or accounts receivable | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
|
Wintech And Chicony [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Percentage of revenue or accounts receivable | 86.00% | 78.00% | 85.00% | 79.00% | |
|
Wintech And Chicony [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member] | Minimum [Member]
|
|||||
| Concentration Risk [Line Items] | |||||
| Percentage of revenue or accounts receivable | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
|
Related-Party Transactions - Additional Information (Detail) (Related Party [Member], USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Oct. 31, 2013
|
Oct. 31, 2012
|
Jan. 31, 2013
|
|
|
Related Party [Member]
|
|||||
| Related Party Transaction [Line Items] | |||||
| Percentage of entity's voting stock owned by related party | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |
| Total commitment payment of license | $ 10.2 | $ 10.2 | $ 10.2 | $ 10.2 | $ 10.2 |
| Payment for license fees | 0.4 | 0.4 | 1.3 | 1.3 | |
| Operating lease expense related to license agreements included in research and development cost | 0.4 | 0.4 | 1.3 | 1.3 | |
| Percentage of investor own voting stock | 4.60% | ||||
| Recognized revenue from related party | 27.7 | 21.4 | 63.3 | 60.8 | |
| Account receivables from related party | $ 11.5 | $ 11.5 | $ 8.2 | ||
| X | ||||||||||
|
- Definition
Total commitment payment of license. No definition available.
|
| X | ||||||||||
|
- Definition
Minimum percentage of voting stock used to define related party. No definition available.
|
| X | ||||||||||
|
- Definition
Percentage of voting stock owned by related party. No definition available.
|
| X | ||||||||||
|
- Definition
Related Party Transaction Amounts Paid To Related Party No definition available.
|
| X | ||||||||||
|
- Definition
Software license rent expense from related party. No definition available.
|
| X | ||||||||||
|
- Definition
The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|