Exa (EXA) 10-Q 10 Dec 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Oct. 31, 2013	Dec. 03, 2013
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Oct-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'EXA CORP	'
Entity Central Index Key	'0000890264	'
Current Fiscal Year End Date	'--01-31	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	13,348,099

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$25,439	$30,716
Accounts receivable	7,538	27,840
Deferred tax assets	1,646	970
Prepaid expenses and other current assets	2,107	1,938
Total current assets	36,730	61,464
Property and equipment, net	5,924	6,176
Intangible assets, net	2,833	3,096
Deferred tax assets	13,212	12,274
Other assets	1,115	1,060
Total assets	59,814	84,070
Current liabilities:	'	'
Accounts payable	852	1,743
Accrued expenses	6,062	7,284
Current portion of long-term debt, net of discount	'	1,747	[1]
Current portion of deferred revenue	11,674	26,013
Current maturities of capital lease obligations	2,010	2,051
Total current liabilities	20,598	38,838
Long-term debt, net of current portion and discount	'	5,024	[1]
Deferred revenue	423	128
Capital lease obligations	1,890	2,818
Other long-term liabilities	879	1,009
Deferred rent	981	1,482
Total liabilities	24,771	49,299
Commitments and contingencies (Note 10)	'	'
Stockholders' equity :	'	'
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued and outstanding	'	'
Common stock, $0.001 par value; 30,000,000 and 195,000,000 shares authorized, respectively; 13,380,361 and 13,319,715 shares issued, respectively; 13,347,859 and 13,287,213 shares outstanding, respectively	13	13
Additional paid-in capital	84,805	83,786
Accumulated deficit	-49,835	-49,012
Treasury stock (32,502 common shares, at cost)	'	'
Accumulated other comprehensive income (loss)	60	-16
Total stockholders' equity	35,043	34,771
Total liabilities and stockholders' equity	$59,814	$84,070
[1]	Includes amounts due to a related party, as follows: October 31, 2013 January 31, 2013 Current portion of long-term debt $ - $ 274 Long-term debt, net of current portion $ - $ 499

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	'	'
Preferred stock, shares outstanding	'	'
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	30,000,000	195,000,000
Common stock, shares issued	13,380,361	13,319,715
Common stock, shares outstanding	13,347,859	13,287,213
Treasury stock, shares	32,502	32,502
Due to related party, current portion of long-term debt	'	$274
Due to related party, long-term debt, net of current portion	'	$499

Consolidated_Statements_of_Ope

Consolidated Statements of Operations and Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Revenue:	'	'	'	'
License revenue	$11,121	$10,317	$32,532	$30,545
Project revenue	2,987	2,295	6,768	5,194
Total revenues	14,108	12,612	39,300	35,739
Operating expenses:	'	'	'	'
Cost of revenues	4,023	3,644	11,527	9,979
Sales and marketing	2,243	1,529	6,539	4,838
Research and development	4,428	4,113	13,264	12,410
General and administrative	2,736	2,435	7,933	6,361
Total operating expenses	13,430	11,721	39,263	33,588
Income from operations	678	891	37	2,151
Other expense, net:	'	'	'	'
Foreign exchange gain (loss)	31	-115	-25	211
Interest expense	-71	-403	-628	-1,226
Interest income	4	1	13	3
Loss on extinguishment of debt	'	'	-755	'
Other income, net	2	2	7	513
Total other expense, net	-34	-515	-1,388	-499
Income (loss) before income taxes	644	376	-1,351	1,652
(Provision) benefit for income taxes	-128	-217	528	-549
Net income (loss)	516	159	-823	1,103
Net income (loss) per share:	'	'	'	'
Basic	$0.04	$0.01	($0.06)	$0.18
Diluted	$0.04	$0.01	($0.06)	$0.09
Weighted average shares outstanding used in computing net income (loss) per share:	'	'	'	'
Basic	13,341,235	13,264,018	13,318,839	6,133,987
Diluted	14,704,522	14,639,264	13,318,839	12,303,723
Comprehensive income (loss):	'	'	'	'
Net income (loss)	516	159	-823	1,103
Foreign currency translation adjustments	64	10	76	13
Comprehensive income (loss)	$580	$169	($747)	$1,116

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Cash flows provided by (used in) operating activities:	'	'
Net (loss) income	($823)	$1,103
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	1,561	1,321
Stock-based compensation expense	846	710
Deferred rent expense	-424	-142
Non-cash interest	162	444
Loss on extinguishment of debt, non-cash portion	465	'
Mark-to-market adjustment of preferred stock warrant liability	'	-228
Mark-to-market adjustment of equity participation right	'	-276
Deferred income taxes	-1,614	244
Net change in operating assets and liabilities:	'	'
Accounts receivable	20,398	15,780
Prepaid expenses and other current assets	-201	104
Other assets	-55	2,053
Accounts payable	-887	-1,722
Accrued expenses	-1,107	-4,391
Other liabilities	84	-76
Deferred revenue	-13,978	-19,062
Net cash provided by (used in) operating activities	4,427	-4,138
Cash flows used in investing activities:	'	'
Purchases of property and equipment	-674	-348
Net cash used in investing activities	-674	-348
Cash flows (used in) provided by financing activities:	'	'
Net decrease in line of credit	'	-7,000
Proceeds from borrowings under long-term debt	'	3,500
Proceeds from stock option and warrant exercises	173	31
Payments of long-term debt	-7,365	-816
Payments of capital lease obligations	-1,532	-675
Proceeds from initial public offering, net of $4,174 issuance costs	'	34,592
Payment of debt issuance costs	-213	-100
Net cash (used in) provided by financing activities	-8,937	29,532
Effect of exchange rate changes on cash	-93	66
Net (decrease) increase in cash and cash equivalents	-5,277	25,112
Cash and cash equivalents, beginning of period	30,716	11,468
Cash and cash equivalents, end of period	25,439	36,580
Supplemental cash flow disclosures:	'	'
Cash paid for interest	533	751
Cash paid for income taxes	289	773
Supplemental disclosure of non-cash investing and financing activities:	'	'
Acquisition of equipment through capital leases	563	2,116
Conversion of preferred stock into common stock	'	32,685
Conversion of preferred stock warrants into common stock warrants	'	$1,324

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012
Statement Of Cash Flows [Abstract]	'	'
Initial public offering issuance costs	$4,174	$4,174

Description_of_Business

Description of Business	9 Months Ended
	Oct. 31, 2013
Accounting Policies [Abstract]	'
Description of Business	'
	1. Description of Business
	Exa Corporation (the “Company” or “Exa”), a Delaware corporation, develops, sells and supports simulation software and services that vehicle manufacturers use to enhance the performance of their products, reduce product development costs and improve the efficiency of their design and engineering processes. The Company’s solutions enable engineers and designers to augment or replace conventional methods of evaluating designs that rely on expensive and inefficient physical prototypes and test facilities with accurate digital simulations that are more useful, cost effective and timely. The Company’s simulation solutions enable customers to gain crucial insights about design performance early in the design cycle, reducing the likelihood of expensive redesigns and late-stage engineering changes, which result in cost savings and fundamental improvements in the development process. The Company is primarily focused on the ground transportation market, but is also beginning to explore the application of its capabilities in the aerospace, oil and gas production, chemical processing, architecture, engineering and construction, power generation, biomedical and electronics industries.
	Exa has offices and sells directly in the United States and through subsidiaries in France, Germany, Italy, Japan, Korea, China, and the United Kingdom. The Company also conducts business in Sweden, India, Brazil, Russia, Canada, Finland, Spain and Australia.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Oct. 31, 2013
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	2. Summary of Significant Accounting Policies
	Applicable Accounting Guidance
	Any reference in these notes to applicable accounting guidance is meant to refer to the authoritative nongovernmental United States generally accepted accounting principles as found in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”).
	Basis of Presentation
	The accompanying unaudited consolidated financial statements have been prepared by the Company in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended January 31, 2013 included in the Company’s Annual Report on Form 10-K. These financial statements reflect all adjustments (consisting solely of normal, recurring adjustments) that are, in the opinion of management, necessary for a fair statement of results for the interim periods presented.
	Change in Estimates
	Property and equipment are stated at cost. Major renewals, additions and betterments are charged to equipment accounts while replacements, maintenance and repairs which do not improve or extend the lives of the respective assets are expensed in the period incurred. Upon retirement or sale, the cost of the assets disposed of and the related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is reflected in income from operations. Depreciation is computed using the straight-line method over the estimated useful life of each asset.
	The Company periodically reviews the estimated useful lives of property and equipment. Changes to the estimated useful lives are recorded prospectively from the date of the change. During the first quarter of fiscal year 2014, the Company reevaluated its network assets, consisting primarily of server equipment utilized in its data centers, and determined that the expected average useful life of those assets had increased from three to five years. The net book value of server assets placed in service as of February 1, 2013 was approximately $2,755. This change resulted in a decrease in depreciation expense on these assets of approximately $142, or $0.01 per share, and $325, or $0.02 per share, on an after-tax basis, for the three and nine months ended October 31, 2013, respectively.
	Recent Accounting Pronouncements
	In December 2011, the FASB issued ASU No. 2011-11, Balance Sheet (Topic 210)—Disclosures about Offsetting Assets and Liabilities (ASU No 2011-11). The update requires entities to disclose information about offsetting and related arrangements of financial instruments and derivative instruments. The Company adopted ASU 2011-11 on February 1, 2013. This adoption did not have a material impact on the Company’s consolidated financial statements.
	In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (ASU 2013-02). ASU 2013-02 requires companies to provide information about the amounts reclassified out of accumulated other comprehensive income by component. Companies are also required to disclose these reclassifications by each respective line item on the statements of operations. ASU 2013-02 is effective prospectively for annual reporting periods beginning after December 15, 2012, and interim periods within those annual periods. The Company adopted ASU 2013-02 on February 1, 2013. This adoption did not have a material impact on the Company’s consolidated financial statements. In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (ASU 2013-11). ASU 2013-11 clarifies guidance and eliminates diversity in practice on the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists at the reporting date. This new guidance is effective for the Company in the first quarter of fiscal year 2015. The Company is currently evaluating the impact of ASU 2013-11 on its consolidated financial statements.

Computation_of_Net_Income_Loss

Computation of Net Income (Loss) Per Share	9 Months Ended
	Oct. 31, 2013
Earnings Per Share [Abstract]	'
Computation of Net Income (Loss) Per Share	'
	3. Computation of Net Income (Loss) Per Share
	Net income (loss) per share has been computed using the weighted average number of shares of common stock outstanding during each period. Diluted amounts per share include the impact of the Company’s outstanding potential common shares, such as shares issuable upon exercise of in-the-money stock options or warrants or upon conversion of convertible preferred stock, when dilutive. Potential common shares that are anti-dilutive are excluded from the calculation of diluted net income (loss) per common share. The impact of the accretion of unpaid and undeclared dividends has not been reflected in the weighted average shares used to compute diluted net income (loss) per share for the nine months ended October 31, 2012 as the convertible preferred stock was not entitled to receive undeclared dividends upon such conversion.
	The following summarizes the calculation of basic and diluted net income (loss) per share:
		Three Months Ended October 31,				Nine Months Ended October 31,
		2013		2012		2013			2012
	Numerator:
	Net income (loss)	$	516	$	159	$	(823	)	$	1,103
	Denominator:
	Weighted average common shares, basic		13,341,235		13,264,018		13,318,839			6,133,987
	Dilutive effect of:
	Options to purchase common and preferred stock		1,351,169		1,365,658		—			1,357,992
	Warrants to purchase common stock		12,118		9,588		—			51,443
	Convertible preferred stock		—		—		—			4,760,301
	Weighted average common shares, diluted		14,704,522		14,639,264		13,318,839			12,303,723
	Basic net income (loss) per share	$	0.04	$	0.01	$	(0.06	)	$	0.18
	Diluted net income (loss) per share	$	0.04	$	0.01	$	(0.06	)	$	0.09
	The table above reflects options for preferred stock on an as converted to common stock basis.
	The following equity instruments have been excluded from diluted net income (loss) per common share as they would be anti-dilutive:
		Three Months Ended October 31,				Nine Months Ended October 31,
		2013		2012		2013			2012
	Options and warrants to purchase common and preferred stock		692,165		561,482		2,319,276			602,319

Property_and_Equipment_net

Property and Equipment, net	9 Months Ended
	Oct. 31, 2013
Property Plant And Equipment [Abstract]	'
Property and Equipment, net	'
	4. Property and Equipment, net
	Property and equipment, net consists of the following as of October 31, 2013 and January 31, 2013:
		October 31,			January 31,
		2013			2013
	Computer software and equipment	$	16,740		$	15,718
	Office equipment and furniture		377			371
	Leasehold improvements		2,636			2,732
	Total property and equipment		19,753			18,821
	Less: accumulated depreciation		(13,829	)		(12,645	)
	Property and equipment, net	$	5,924		$	6,176
	For the three and nine months ended October 31, 2013, depreciation expense was $434 and $1,298, respectively. For the three and nine months ended October 31, 2012, depreciation expense was $391 and $1,029, respectively. Included in computer software and equipment and office equipment and furniture is equipment held pursuant to capital leases with costs of $14,497 and $14,450 and accumulated amortization of $10,624 and $9,752 as of October 31, 2013 and January 31, 2013, respectively.

Accrued_Expenses

Accrued Expenses	9 Months Ended
	Oct. 31, 2013
Payables And Accruals [Abstract]	'
Accrued Expenses	'
	5. Accrued Expenses
	Accrued expenses consist of the following:
		October 31,		January 31,
		2013		2013
	Accrued payroll	$	2,047	$	1,457
	Sales and withholding taxes		475		2,595
	Accrued commissions and bonuses		1,094		1,543
	Accrued income taxes payable		863		73
	Deferred rent, current portion		598		523
	Legal and professional		495		451
	Other accrued expenses		490		642
	Total accrued expenses	$	6,062	$	7,284

Deferred_Rent

Deferred Rent	9 Months Ended
	Oct. 31, 2013
Text Block [Abstract]	'
Deferred Rent	'
	6. Deferred Rent
	In connection with its corporate headquarters lease entered into in July 2008, the Company received a tenant improvement allowance of $1,958 from the landlord. This lease incentive was recorded as leasehold improvements and deferred rent and is being amortized as part of rent expense on a straight-line basis over the life of the lease. The Company’s subsidiary Euroxa S.a.r.l. entered into a new office lease in Paris, France in May 2012 with a landlord incentive totaling $148, equivalent to four months free rent, which is also being amortized as rent expense on a straight line basis over the life of the lease. In addition, the Company’s facility leases typically contain other than straight-line payment features. The difference between the straight-line rent expense of the lease and the cash payments is recorded as deferred rent. Deferred rent at October 31, 2013 and January 31, 2013 is as follows:
		October 31,			January 31,
		2013			2013
	Leasehold improvements, less incentive	$	638		$	836
	Non-cash rent expense		941			1,169
	Total deferred rent		1,579			2,005
	Less: current portion included in accrued expenses		(598	)		(523	)
	Deferred rent, net of current portion	$	981		$	1,482

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Oct. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurements	'
	7. Fair Value Measurements
	Financial instruments consist primarily of cash and cash equivalents, accounts receivable, capital lease obligations and debt. As of October 31, 2013 and January 31, 2013, the carrying amounts of these instruments approximate their fair values. The estimated fair values have been determined from information obtained from market sources and management estimates.
	In determining the fair value of its financial assets and liabilities, the Company uses various valuation approaches. ASC 820, Fair Value Measurements and Disclosures, establishes a hierarchy of inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability, and are developed based on the best information available in the circumstances. The fair value hierarchy is broken down into three levels based on the source of inputs as follows:
	Level 1 – Valuations based on unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access.
	Level 2 – Valuations based on quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and models for which all significant inputs are observable, either directly or indirectly.
	Level 3 – Valuations based on inputs that are unobservable and significant to the overall fair value measurement and that are based on management’s best estimate of inputs market participants would use for pricing the asset or liability at the measurement date, including assumptions about risk.
	The following table summarizes the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value as of October 31, 2013:
		Total		Level 1		Level 2		Level 3
	Assets:
	Money market funds	$	15,007	$	15,007	$	—	$	—
	Other assets – certificate of deposit	$	525	$	525	$	—	$	—
	The following table summarizes the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value as of January 31, 2013:
		Total		Level 1		Level 2		Level 3
	Assets:
	Other assets – certificate of deposit	$	525	$	525	$	—	$	—
	The availability of observable inputs can vary among the various types of financial assets and liabilities. To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for financial statement disclosure purposes, the level in the fair value hierarchy within which the fair value measurement is categorized is based on the lowest level input that is significant to the overall fair value measurement.

Acquired_Intangible_Assets

Acquired Intangible Assets	9 Months Ended
	Oct. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Acquired Intangible Assets	'
	8. Acquired Intangible Assets
	Intangible assets acquired in a business combination are recorded under the purchase method of accounting at their estimated fair values at the date of acquisition. The Company amortizes acquired intangible assets over their estimated useful lives.
	The following table reflects the carrying value of intangible assets as of October 31, 2013:
		October 31, 2013
		Cost		Accumulated			Net Book
				Amortization			Value
	Intellectual property	$	3,505	$	(672	)	$	2,833
	Access to facilities contract		38		(38	)		—
	Total	$	3,543	$	(710	)	$	2,833
	The following table reflects the carrying value of intangible assets as of January 31, 2013:
		January 31, 2013
		Cost		Accumulated			Net Book
				Amortization			Value
	Intellectual property	$	3,505	$	(409	)	$	3,096
	Access to facilities contract		38		(38	)		—
	Total	$	3,543	$	(447	)	$	3,096
	For the three and nine months ended October 31, 2013, amortization expense of intangible assets was $88 and $263, respectively. For the three and nine months ended October 31, 2012, amortization expense of intangible assets was $98 and $292, respectively.

Debt

Debt	9 Months Ended
	Oct. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	9. Debt
	Long-term Debt
	On May 31, 2013 the Company repaid, with available cash on hand, all outstanding obligations under its Loan and Security Agreement dated January 28, 2011 with Gold Hill Capital 2008, L.P. and Massachusetts Capital Resource Company. The repayment amount included $6,852 of outstanding principal, $60 of accrued interest and $213 of deferred origination fees that were accrued for in other long-term liabilities in the accompanying consolidated balance sheet. In addition, in accordance with the terms of the agreement, the Company paid a prepayment interest penalty of $290, representing 3% of the amount advanced to the Company under the agreement in January 2011 and 4% of the amount advanced to the Company under the agreement in March 2012. The Company recognized a loss from the extinguishment of this debt of $755 during the second quarter of fiscal year 2014, representing the prepayment interest penalty and the write-off of unamortized debt discount. As a result of this repayment, the Company expects to save cash interest which would otherwise have been incurred under the agreement of approximately $429 for the remainder of fiscal year 2014, and $428, $170 and $31 for fiscal years 2015, 2016 and 2017, respectively.
	Line of Credit
	In May 2010, the Company secured a $10,000 line of credit agreement with a bank bearing interest at the bank’s prime rate plus 1.50% on existing accounts receivable and 2.5% on certain forecasted renewal invoices, expiring one year from closing. On May 23, 2013, the line of credit expired in accordance with its terms.
	Total interest expense, including interest under the Company’s capital lease obligations, was $71 and $628 for the three and nine months ended October 31, 2013 and $403 and $1,226 for the three and nine months ended October 31, 2012, respectively. Included in interest expense was interest paid to related parties of $0 and $26 for the three and nine months ended October 31, 2013, respectively, and $24 and $91 for the three and nine months ended October 31, 2012, respectively. There were no amounts outstanding under the line of credit agreement as of the expiration date of the line of credit or as of January 31, 2013.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	10. Commitments and Contingencies
	Legal Contingencies
	From time to time the Company is involved in legal proceedings arising in the ordinary course of business. There is no litigation pending that could, individually or in the aggregate, have a material adverse effect on the Company’s financial position, results of operations, or cash flows.
	In 2011, the Company was notified by the Massachusetts Institute of Technology, or MIT, that MIT believes that Exa is utilizing the intellectual property covered by a license agreement between the Company and MIT, and therefore is in arrears in the payment of royalties under the agreement. The Company has advised MIT that it does not believe that the Company utilized the underlying technology at any time since at least 1998, or that any royalties are owed under the agreement. MIT has not commenced suit against the Company with respect to its claims, and if any such suit is commenced by MIT, the Company intends to defend it vigorously. The Company believes that if MIT were to prevail in any such litigation, the royalties due under the terms of the license agreement, after giving effect to the approximately $200 in minimum royalties that the Company has already paid, would not exceed approximately $2,600 (excluding any interest or costs of litigation). The Company is not able to determine whether a loss is probable or estimate the reasonably possible or probable amount of such loss.
	Guarantees and Indemnification Obligations
	The Company enters into standard indemnification agreements in the ordinary course of business. Pursuant to these agreements, the Company indemnifies, holds harmless, and agrees to reimburse the indemnified party for losses suffered or incurred by the indemnified party, generally the Company’s business partners or customers, in connection with any United States patent, or any copyright or other intellectual property infringement claim by any third party with respect to the Company’s products. The term of these indemnification provisions is generally perpetual after execution of the agreement. The maximum potential amount of future payments the Company could be required to make under these agreements is unlimited.
	Based on historical experience and information known as of October 31, 2013 and January 31, 2013, the Company has not recorded any liabilities for the above guarantees and indemnities.

Stock_Based_Compensation

Stock Based Compensation	9 Months Ended
	Oct. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock Based Compensation	'
	11. Stock Based Compensation
	The fair value of common stock options for employees and non-employees is estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions used:
		Nine Months Ended October 31,
		2013			2012
	Estimated dividend yield		0	%		0	%
	Expected stock price volatility		50.6	%		52.8	%
	Weighted-average risk-free interest rate		2.2	%		1.2	%
	Expected life of options (in years)		6.25			6.25
	The weighted average grant date fair value per share for stock options granted in the three and nine months ended October 31, 2013 was $7.16 and $6.78, respectively.
	Total stock-based compensation expense related to stock options issued by the Company is as follows:
		Three Months Ended October 31,						Nine Months Ended October 31,
		2013			2012			2013		2012
	Cost of revenues	$	35		$	28		$	99	$	82
	Sales and marketing		67			49			169		143
	Research and development		110			75			264		232
	General and administrative		138			83			314		253
	Total	$	350		$	235		$	846	$	710
	The total unrecognized compensation cost related to outstanding stock options is $2,711 at October 31, 2013. This amount is expected to be recognized over a weighted-average period of 2.87 years.

Income_Taxes

Income Taxes	9 Months Ended
	Oct. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	12. Income Taxes
	For the three months ended October 31, 2013, the Company’s income tax provision and effective tax rate, including discrete items, were $128 and 19.9%, respectively. For the nine months ended October 31, 2013, the Company’s income tax benefit and effective tax rate, including discrete items, were $528 and 39.1%, respectively. For the three and nine months ended October 31, 2012, the Company’s income tax provision was $217 and $549, respectively, and the Company’s effective tax rate, including discrete items, was 57.7% and 33.2%, respectively, for the same periods. For the three and nine months ended October 31, 2013, the effective income tax rate differed from the federal statutory rate mainly due to nondeductible compensation offset by the tax benefit of federal and state research and development credits. The effective tax rate for the three and nine months ended October 31, 2012 does not include a benefit for federal research and development credits, as the credit was not extended until the fourth quarter of fiscal year 2013. For the three and nine months ended October 31, 2013 and 2012, the effective income tax rate was impacted discretely by foreign exchange gains and losses, loss on extinguishment of debt, and for 2012 only, mark-to-market adjustments on the Company’s former warrants and former equity participation right, for which there was no tax provision.
	The Company does not expect that its unrecognized tax benefit will change significantly within the next twelve months. The Company and one or more of its subsidiaries file United States federal income tax returns and tax returns in various state and foreign jurisdictions. With limited exceptions, the Company is no longer subject to federal, state, local or foreign examinations for years prior to January 31, 2009. However, carryforward attributes that were generated prior to January 31, 2010 may still be adjusted upon examination by state or local tax authorities if they either have been or will be used in a future period.
	Under Section 382 of the Internal Revenue Code of 1986, as amended, substantial changes in the Company’s ownership may limit the amount of net operating loss carryforwards that could be utilized annually in the future to offset its taxable income. Specifically, this limitation may arise in the event of a cumulative change in ownership of the Company of more than 50% within a three-year period. The Company’s management has determined that, as of October 31, 2013, it had not experienced an ownership change for purposes of Section 382. However, future transactions in the Company’s common stock could trigger an ownership change for purposes of Section 382, which could limit the amount of net operating loss carryforwards that could be utilized annually in the future to offset the Company’s taxable income, if any. Any such limitation, whether as the result of sales of common stock by the Company’s existing stockholders or sales of common stock by the Company, could have a material adverse effect on the Company’s results of operations in future years.

Geographic_Information

Geographic Information	9 Months Ended
	Oct. 31, 2013
Segment Reporting [Abstract]	'
Geographic Information	'
	13. Geographic Information
	Revenue is attributed to individual countries based upon location of the external customer. Revenue by geographic area is as follows:
		Three Months Ended October 31,				Nine Months Ended October 31,
		2013		2012		2013		2012
	United States	$	3,099	$	3,300	$	8,588	$	8,369
	Japan		2,492		2,786		6,320		7,572
	Germany		2,615		1,924		7,273		5,827
	France		2,475		1,706		6,915		5,290
	Korea		1,211		1,042		3,498		2,981
	United Kingdom		1,233		936		3,497		2,793
	Sweden		489		532		1,716		1,592
	Other		494		386		1,493		1,315
	Total	$	14,108	$	12,612	$	39,300	$	35,739
	Net long-lived assets, consisting of net property and equipment, are subject to geographic risks because they are generally difficult to move and to effectively utilize in another geographic area in a reasonable time period and because they are relatively illiquid.
	Net long-lived assets by principal geographic areas were as follows:
		October 31,		January 31,
		2013		2013
	United States	$	4,551	$	4,678
	Japan		236		204
	Germany		132		144
	France		918		1,068
	Other		87		82
	Total property and equipment, net	$	5,924	$	6,176

Stockholders_Equity

Stockholder's Equity	9 Months Ended
	Oct. 31, 2013
Equity [Abstract]	'
Stockholder's Equity	'
	14. Stockholder’s Equity
	On August 28, 2013, the Company’s stockholders approved, and the Company effected, an amendment to the Company’s amended and restated certificate of incorporation that reduced the number of authorized shares of common stock from 195,000,000 to 30,000,000. The primary reason for the share reduction was to reduce the amount of the Company’s annual franchise tax in the State of Delaware. Each year, the Company is required to make franchise tax payments to the State of Delaware in an amount determined, in part, by the total number of shares of stock the Company is authorized to issue. Based on the Company’s previous capital structure and current Delaware tax rates, the Company’s annual Delaware state franchise tax was $180. Because of the authorized share reduction, the Company estimates, based on its current asset level, that the annual Delaware state franchise tax would be reduced by over $100. Under Delaware law, however, if an amendment changing the number of shares of authorized stock becomes effective during the year, the amount of franchise tax for that year will be calculated on a prorated basis, based on the date of passage of that amendment. Accordingly, the Company expects that the actual reduction in the Delaware state franchise tax payable with respect to fiscal year 2014 will be approximately $46.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Oct. 31, 2013
Accounting Policies [Abstract]	'
Applicable Accounting Guidance	'
	Applicable Accounting Guidance
	Any reference in these notes to applicable accounting guidance is meant to refer to the authoritative nongovernmental United States generally accepted accounting principles as found in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”).
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited consolidated financial statements have been prepared by the Company in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and pursuant to the rules and regulations of the Securities and Exchange Commission regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended January 31, 2013 included in the Company’s Annual Report on Form 10-K. These financial statements reflect all adjustments (consisting solely of normal, recurring adjustments) that are, in the opinion of management, necessary for a fair statement of results for the interim periods presented.
Change in Estimates	'
	Change in Estimates
	Property and equipment are stated at cost. Major renewals, additions and betterments are charged to equipment accounts while replacements, maintenance and repairs which do not improve or extend the lives of the respective assets are expensed in the period incurred. Upon retirement or sale, the cost of the assets disposed of and the related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is reflected in income from operations. Depreciation is computed using the straight-line method over the estimated useful life of each asset.
	The Company periodically reviews the estimated useful lives of property and equipment. Changes to the estimated useful lives are recorded prospectively from the date of the change. During the first quarter of fiscal year 2014, the Company reevaluated its network assets, consisting primarily of server equipment utilized in its data centers, and determined that the expected average useful life of those assets had increased from three to five years. The net book value of server assets placed in service as of February 1, 2013 was approximately $2,755. This change resulted in a decrease in depreciation expense on these assets of approximately $142, or $0.01 per share, and $325, or $0.02 per share, on an after-tax basis, for the three and nine months ended October 31, 2013, respectively.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In December 2011, the FASB issued ASU No. 2011-11, Balance Sheet (Topic 210)—Disclosures about Offsetting Assets and Liabilities (ASU No 2011-11). The update requires entities to disclose information about offsetting and related arrangements of financial instruments and derivative instruments. The Company adopted ASU 2011-11 on February 1, 2013. This adoption did not have a material impact on the Company’s consolidated financial statements.
	In February 2013, the FASB issued ASU No. 2013-02, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (ASU 2013-02). ASU 2013-02 requires companies to provide information about the amounts reclassified out of accumulated other comprehensive income by component. Companies are also required to disclose these reclassifications by each respective line item on the statements of operations. ASU 2013-02 is effective prospectively for annual reporting periods beginning after December 15, 2012, and interim periods within those annual periods. The Company adopted ASU 2013-02 on February 1, 2013. This adoption did not have a material impact on the Company’s consolidated financial statements. In July 2013, the FASB issued ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists (ASU 2013-11). ASU 2013-11 clarifies guidance and eliminates diversity in practice on the presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists at the reporting date. This new guidance is effective for the Company in the first quarter of fiscal year 2015. The Company is currently evaluating the impact of ASU 2013-11 on its consolidated financial statements

Computation_of_Net_Income_Loss1

Computation of Net Income (Loss) Per Share (Tables)	9 Months Ended
	Oct. 31, 2013
Earnings Per Share [Abstract]	'
Calculation of Basic and Diluted Net Income (Loss) Per Share	'
	The following summarizes the calculation of basic and diluted net income (loss) per share:
		Three Months Ended October 31,				Nine Months Ended October 31,
		2013		2012		2013			2012
	Numerator:
	Net income (loss)	$	516	$	159	$	(823	)	$	1,103
	Denominator:
	Weighted average common shares, basic		13,341,235		13,264,018		13,318,839			6,133,987
	Dilutive effect of:
	Options to purchase common and preferred stock		1,351,169		1,365,658		—			1,357,992
	Warrants to purchase common stock		12,118		9,588		—			51,443
	Convertible preferred stock		—		—		—			4,760,301
	Weighted average common shares, diluted		14,704,522		14,639,264		13,318,839			12,303,723
	Basic net income (loss) per share	$	0.04	$	0.01	$	(0.06	)	$	0.18
	Diluted net income (loss) per share	$	0.04	$	0.01	$	(0.06	)	$	0.09
Equity Instruments Excluded from Diluted Net Income (Loss) Per Common Share	'
	The following equity instruments have been excluded from diluted net income (loss) per common share as they would be anti-dilutive:
		Three Months Ended October 31,				Nine Months Ended October 31,
		2013		2012		2013			2012
	Options and warrants to purchase common and preferred stock		692,165		561,482		2,319,276			602,319

Property_and_Equipment_net_Tab

Property and Equipment, net (Tables)	9 Months Ended
	Oct. 31, 2013
Property Plant And Equipment [Abstract]	'
Schedule of Property and Equipment	'
	Property and equipment, net consists of the following as of October 31, 2013 and January 31, 2013:
		October 31,			January 31,
		2013			2013
	Computer software and equipment	$	16,740		$	15,718
	Office equipment and furniture		377			371
	Leasehold improvements		2,636			2,732
	Total property and equipment		19,753			18,821
	Less: accumulated depreciation		(13,829	)		(12,645	)
	Property and equipment, net	$	5,924		$	6,176

Accrued_Expenses_Tables

Accrued Expenses (Tables)	9 Months Ended
	Oct. 31, 2013
Payables And Accruals [Abstract]	'
Accrued Expenses	'
	Accrued expenses consist of the following:
		October 31,		January 31,
		2013		2013
	Accrued payroll	$	2,047	$	1,457
	Sales and withholding taxes		475		2,595
	Accrued commissions and bonuses		1,094		1,543
	Accrued income taxes payable		863		73
	Deferred rent, current portion		598		523
	Legal and professional		495		451
	Other accrued expenses		490		642
	Total accrued expenses	$	6,062	$	7,284

Deferred_Rent_Tables

Deferred Rent (Tables)	9 Months Ended
	Oct. 31, 2013
Text Block [Abstract]	'
Deferred Rent	'
	Deferred rent at October 31, 2013 and January 31, 2013 is as follows:
		October 31,			January 31,
		2013			2013
	Leasehold improvements, less incentive	$	638		$	836
	Non-cash rent expense		941			1,169
	Total deferred rent		1,579			2,005
	Less: current portion included in accrued expenses		(598	)		(523	)
	Deferred rent, net of current portion	$	981		$	1,482

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Oct. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value	'
	The following table summarizes the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value as of October 31, 2013:
		Total		Level 1		Level 2		Level 3
	Assets:
	Money market funds	$	15,007	$	15,007	$	—	$	—
	Other assets – certificate of deposit	$	525	$	525	$	—	$	—
	The following table summarizes the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value as of January 31, 2013:
		Total		Level 1		Level 2		Level 3
	Assets:
	Other assets – certificate of deposit	$	525	$	525	$	—	$	—

Acquired_Intangible_Assets_Tab

Acquired Intangible Assets (Tables)	9 Months Ended
	Oct. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Carrying Value of Intangible Assets	'
	The following table reflects the carrying value of intangible assets as of October 31, 2013:
		October 31, 2013
		Cost		Accumulated			Net Book
				Amortization			Value
	Intellectual property	$	3,505	$	(672	)	$	2,833
	Access to facilities contract		38		(38	)		—
	Total	$	3,543	$	(710	)	$	2,833
	The following table reflects the carrying value of intangible assets as of January 31, 2013:
		January 31, 2013
		Cost		Accumulated			Net Book
				Amortization			Value
	Intellectual property	$	3,505	$	(409	)	$	3,096
	Access to facilities contract		38		(38	)		—
	Total	$	3,543	$	(447	)	$	3,096

Stock_Based_Compensation_Table

Stock Based Compensation (Tables)	9 Months Ended
	Oct. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Assumptions Used to Calculate Fair Value of Common Stock Options for Employees and Non-Employees	'
	The fair value of common stock options for employees and non-employees is estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions used:
		Nine Months Ended October 31,
		2013			2012
	Estimated dividend yield		0	%		0	%
	Expected stock price volatility		50.6	%		52.8	%
	Weighted-average risk-free interest rate		2.2	%		1.2	%
	Expected life of options (in years)		6.25			6.25
Stock-Based Compensation Expense Related to Stock Options Issued by the Company	'
	Total stock-based compensation expense related to stock options issued by the Company is as follows:
		Three Months Ended October 31,						Nine Months Ended October 31,
		2013			2012			2013		2012
	Cost of revenues	$	35		$	28		$	99	$	82
	Sales and marketing		67			49			169		143
	Research and development		110			75			264		232
	General and administrative		138			83			314		253
	Total	$	350		$	235		$	846	$	710

Geographic_Information_Tables

Geographic Information (Tables)	9 Months Ended
	Oct. 31, 2013
Segment Reporting [Abstract]	'
Revenue by Geographic Area	'
	Revenue is attributed to individual countries based upon location of the external customer. Revenue by geographic area is as follows:
		Three Months Ended October 31,				Nine Months Ended October 31,
		2013		2012		2013		2012
	United States	$	3,099	$	3,300	$	8,588	$	8,369
	Japan		2,492		2,786		6,320		7,572
	Germany		2,615		1,924		7,273		5,827
	France		2,475		1,706		6,915		5,290
	Korea		1,211		1,042		3,498		2,981
	United Kingdom		1,233		936		3,497		2,793
	Sweden		489		532		1,716		1,592
	Other		494		386		1,493		1,315
	Total	$	14,108	$	12,612	$	39,300	$	35,739
Net Long-Lived Assets by Principal Geographic Areas	'
	Net long-lived assets by principal geographic areas were as follows:
		October 31,		January 31,
		2013		2013
	United States	$	4,551	$	4,678
	Japan		236		204
	Germany		132		144
	France		918		1,068
	Other		87		82
	Total property and equipment, net	$	5,924	$	6,176

Summary_of_Significant_Account2

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2013	Jan. 31, 2013
Network Assets [Member]	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'
Average useful life of assets	'	'3 years	'
Server Assets [Member]	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'
Net book value of assets	'	'	$2,755
Change in estimate on depreciation expense	$142	$325	'
Change in estimate on earning per share	$0.01	$0.02	'
Reevaluation [Member] | Network Assets [Member]	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'
Average useful life of assets	'	'5 years	'

Computation_of_Net_Income_Loss2

Computation of Net Income (Loss) Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Numerator:	'	'	'	'
Net income (loss)	$516	$159	($823)	$1,103
Denominator:	'	'	'	'
Weighted average common shares, basic	13,341,235	13,264,018	13,318,839	6,133,987
Dilutive effect of:	'	'	'	'
Options to purchase common and preferred stock	1,351,169	1,365,658	'	1,357,992
Warrants to purchase common stock	12,118	9,588	'	51,443
Convertible preferred stock	'	'	'	4,760,301
Weighted average common shares, diluted	14,704,522	14,639,264	13,318,839	12,303,723
Basic net income (loss) per share	$0.04	$0.01	($0.06)	$0.18
Diluted net income (loss) per share	$0.04	$0.01	($0.06)	$0.09

Computation_of_Net_Income_Loss3

Computation of Net Income (Loss) Per Share - Equity Instruments Excluded from Diluted Net Income (Loss) Per Common Share (Detail)	3 Months Ended		9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Earnings Per Share [Abstract]	'	'	'	'
Options and warrants to purchase common and preferred stock	692,165	561,482	2,319,276	602,319

Property_and_Equipment_Net_Sch

Property and Equipment, Net - Schedule of Property and Equipment (Detail) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	$19,753	$18,821
Less: accumulated depreciation	-13,829	-12,645
Property and equipment, net	5,924	6,176
Computer Software and Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	16,740	15,718
Office Equipment and Furniture [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	377	371
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment	$2,636	$2,732

Property_and_Equipment_Net_Add

Property and Equipment, Net - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Jan. 31, 2013
Property Plant And Equipment [Abstract]	'	'	'	'	'
Depreciation expense	$434	$391	$1,298	$1,029	'
Cost of equipment held pursuant to capital leases	14,497	'	14,497	'	14,450
Accumulated amortization	'	'	$10,624	'	$9,752

Accrued_Expenses_Accrued_Expen

Accrued Expenses - Accrued Expenses (Detail) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Accrued payroll	$2,047	$1,457
Sales and withholding taxes	475	2,595
Accrued commissions and bonuses	1,094	1,543
Accrued income taxes payable	863	73
Deferred rent, current portion	598	523
Legal and professional	495	451
Other accrued expenses	490	642
Total accrued expenses	$6,062	$7,284

Deferred_Rent_Additional_Infor

Deferred Rent - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013
Deferred Revenue Disclosure [Abstract]	'
Tenant improvement allowance	$1,958
Amortization of lease incentive	$148
Amortization of lease incentive period	'4 months

Deferred_Rent_Deferred_Rent_De

Deferred Rent - Deferred Rent (Detail) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Deferred Revenue Disclosure [Abstract]	'	'
Leasehold improvements, less incentive	$638	$836
Non-cash rent expense	941	1,169
Total deferred rent	1,579	2,005
Less: current portion included in accrued expenses	-598	-523
Deferred rent, net of current portion	$981	$1,482

Fair_Value_Measurements_Fair_V

Fair Value Measurements - Fair Value Hierarchy for Financial Assets and Liabilities Measured at Fair Value (Detail) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Assets:	'	'
Money market funds	$15,007	'
Other assets - certificate of deposit	525	525
Level 1 [Member]	'	'
Assets:	'	'
Money market funds	15,007	'
Other assets - certificate of deposit	525	525
Level 2 [Member]	'	'
Assets:	'	'
Money market funds	'	'
Other assets - certificate of deposit	'	'
Level 3 [Member]	'	'
Assets:	'	'
Money market funds	'	'
Other assets - certificate of deposit	'	'

Acquired_Intangible_Assets_Car

Acquired Intangible Assets - Carrying Value of Intangible Assets (Detail) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Cost	$3,543	$3,543
Accumulated Amortization	-710	-447
Net Book Value	2,833	3,096
Intellectual Property [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Cost	3,505	3,505
Accumulated Amortization	-672	-409
Net Book Value	2,833	3,096
Access to Facilities Contract [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Cost	38	38
Accumulated Amortization	-38	-38
Net Book Value	'	'

Acquired_Intangible_Assets_Add

Acquired Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]	'	'	'	'
Intangible assets amortization expense	$88	$98	$263	$292

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)

1 Months Ended

3 Months Ended

9 Months Ended

6 Months Ended

3 Months Ended

9 Months Ended

In Thousands, unless otherwise specified

31-May-13

Oct. 31, 2013

Oct. 31, 2012

Oct. 31, 2013

Oct. 31, 2012

Jan. 31, 2013

Jul. 31, 2014

Oct. 31, 2013

Oct. 31, 2012

Oct. 31, 2013

Oct. 31, 2012

Oct. 31, 2013

Oct. 31, 2013

Subsequent Event [Member]

Related Party [Member]

Related Party [Member]

Related Party [Member]

Related Party [Member]

Accounts Receivable Securitization Facility [Member]

Renewed and Extended [Member]

Debt Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Remaining outstanding principal

$6,852

'

'

'

'

'

'

'

'

'

'

'

'

Accrued interest

60

'

'

'

'

'

'

'

'

'

'

'

'

Deferred origination fees

213

'

'

'

'

'

'

'

'

'

'

'

'

Prepayment interest penalty

290

'

'

'

'

'

'

'

'

'

'

'

'

Additional interest penalties after second anniversary

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

Additional interest penalties prior second year

4.00%

'

'

'

'

'

'

'

'

'

'

'

'

Loss from the extinguishment of debt

'

'

'

-755

'

'

755

'

'

'

'

'

'

Expected savings of cash interest

'

'

'

429

'

'

'

'

'

'

'

'

'

Expected savings of cash interest, year one

'

'

'

428

'

'

'

'

'

'

'

'

'

Expected savings of cash interest, year two

'

'

'

170

'

'

'

'

'

'

'

'

'

Expected savings of cash interest, year three

'

'

'

31

'

'

'

'

'

'

'

'

'

Credit agreement amount

'

10,000

'

10,000

'

'

'

'

'

'

'

'

'

Interest rate

'

'

'

'

'

'

'

'

'

'

'

1.50%

2.50%

Line of credit, expiration date

'

'

'

'

'

'

'

'

'

'

'

'

23-May-13

Interest expense

'

71

403

628

1,226

'

'

0

24

26

91

'

'

Line of credit, outstanding amount

'

'

'

'

'

$0

'

'

'

'

'

'

'

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	Oct. 31, 2013
In Thousands, unless otherwise specified
Contingencies And Commitments [Line Items]	'
Royalties expenses already paid	$200
Maximum [Member]	'
Contingencies And Commitments [Line Items]	'
Royalties due	$2,600

Stock_Based_Compensation_Assum

Stock Based Compensation - Assumptions Used to Calculate Fair Value of Common Stock Options for Employees and Non-Employees (Detail)	9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Estimated dividend yield	0.00%	0.00%
Expected stock price volatility	50.60%	52.80%
Weighted-average risk-free interest rate	2.20%	1.20%
Expected life of options (in years)	'6 years 3 months	'6 years 3 months

Stock_Based_Compensation_Addit

Stock Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Weighted average grant date per share for stock options	$7.16	$6.78
Total unrecognized compensation cost	$2,711	$2,711
Weighted-average period	'	'2 years 10 months 13 days

Stock_Based_Compensation_Stock

Stock Based Compensation - Stock-Based Compensation Expense Related to Stock Options Issued by the Company (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Stock Based Compensation [Line Items]	'	'	'	'
Stock-based compensation expense	$350	$235	$846	$710
Cost of Revenues [Member]	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Stock-based compensation expense	35	28	99	82
Sales and Marketing [Member]	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Stock-based compensation expense	67	49	169	143
Research and Development [Member]	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Stock-based compensation expense	110	75	264	232
General and Administrative [Member]	'	'	'	'
Stock Based Compensation [Line Items]	'	'	'	'
Stock-based compensation expense	$138	$83	$314	$253

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Income Tax Disclosure [Abstract]	'	'	'	'
Effective income tax rate	19.90%	57.70%	39.10%	33.20%
(Provision) benefit for income taxes	($128)	($217)	$528	($549)
Income tax examination, description	'	'	'With limited exceptions, the Company is no longer subject to federal, state, local or foreign examinations for years prior to January 31, 2009. However, carryforward attributes that were generated prior to January 31, 2010 may still be adjusted upon examination by state or local tax authorities if they either have been or will be used in a future period.	'
Threshold percentage for change in ownership	'	'	50.00%	'
Period of change in ownership	'	'	'3 years	'

Geographic_Information_Revenue

Geographic Information - Revenue by Geographic Area (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	$14,108	$12,612	$39,300	$35,739
United States [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	3,099	3,300	8,588	8,369
Japan [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	2,492	2,786	6,320	7,572
Germany [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	2,615	1,924	7,273	5,827
France [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	2,475	1,706	6,915	5,290
Korea [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	1,211	1,042	3,498	2,981
United Kingdom [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	1,233	936	3,497	2,793
Sweden [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	489	532	1,716	1,592
Other [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Revenue	$494	$386	$1,493	$1,315

Geographic_Information_Net_Lon

Geographic Information - Net Long-Lived Assets by Principal Geographic Areas (Detail) (USD $)	Oct. 31, 2013	Jan. 31, 2013
In Thousands, unless otherwise specified
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	$5,924	$6,176
United States [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	4,551	4,678
Japan [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	236	204
Germany [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	132	144
France [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	918	1,068
Other [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	$87	$82

Stockholders_Equity_Additional

Stockholder's Equity - Additional Information (Detail) (USD $)	1 Months Ended
In Thousands, except Share data, unless otherwise specified	Aug. 28, 2013	Oct. 31, 2013	Aug. 27, 2013	Jan. 31, 2013
Equity [Abstract]	'	'	'	'
Common stock, shares authorized	30,000,000	30,000,000	195,000,000	195,000,000
Franchise annual tax	$180	'	'	'
Tax reduction	100	'	'	'
Tax payable	$46	'	'	'