SPS Commerce (SPSC) 10-Q 1 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 24, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Trading Symbol	'SPSC	'
Entity Registrant Name	'SPS COMMERCE INC	'
Entity Central Index Key	'0001092699	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	16,203,384

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS	'	'
Cash and cash equivalents	$134,603	$131,294
Accounts receivable, less allowance for doubtful accounts of $233 and $237, respectively	12,166	11,611
Deferred costs, current	9,539	9,048
Deferred income taxes, current	1,272	1,272
Prepaid expenses and other current assets	2,797	2,850
Total current assets	160,377	156,075
PROPERTY AND EQUIPMENT, net	9,479	9,922
GOODWILL	25,487	25,487
INTANGIBLE ASSETS, net	16,365	17,082
OTHER ASSETS	'	'
Deferred costs, net of current portion	3,957	3,684
Deferred income taxes, net of current portion	10,697	10,870
Other non-current assets	197	210
Total assets	226,559	223,330
CURRENT LIABILITIES	'	'
Accounts payable	2,243	1,798
Accrued compensation and benefits	7,694	7,981
Accrued expenses and other current liabilities	3,069	2,801
Deferred revenue, current	6,493	6,335
Total current liabilities	19,499	18,915
OTHER LIABILITIES	'	'
Deferred revenue, less current portion	9,201	8,785
Deferred rent	2,762	2,857
Total liabilities	31,462	30,557
COMMITMENTS and CONTINGENCIES	'	'
STOCKHOLDERS' EQUITY	'	'
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 0 shares issued and outstanding	'	'
Common stock, $0.001 par value; 55,000,000 shares authorized; 16,182,693 and 16,092,121 shares issued and outstanding, respectively	16	16
Additional paid-in capital	241,500	239,549
Accumulated deficit	-46,419	-46,792
Total stockholders' equity	195,097	192,773
Total liabilities and stockholder's equity	$226,559	$223,330

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowance for doubtful accounts	$233	$237
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	55,000,000	55,000,000
Common stock, shares issued	16,182,693	16,092,121
Common stock, shares outstanding	16,182,693	16,092,121

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Revenues	$28,939	$23,752
Cost of revenues	9,255	7,066
Gross profit	19,684	16,686
Operating expenses	'	'
Sales and marketing	10,884	9,225
Research and development	2,974	2,503
General and administrative	4,511	4,047
Amortization of intangible assets	717	717
Total operating expenses	19,086	16,492
Income from operations	598	194
Other income (expense)	'	'
Interest income	49	23
Other expense	-56	-84
Total other expense, net	-7	-61
Income before income taxes	591	133
Income tax (expense) benefit	-218	66
Net income	$373	$199
Net income per share	'	'
Basic	$0.02	$0.01
Diluted	$0.02	$0.01
Weighted average common shares used to compute net income per share	'	'
Basic	16,155	14,884
Diluted	16,830	15,564

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities	'	'
Net income	$373	$199
Reconciliation of net income to net cash provided by operating activities	'	'
Deferred income taxes	173	-72
Depreciation and amortization of property and equipment	1,304	1,171
Amortization of intangible assets	717	717
Provision for doubtful accounts	157	80
Stock-based compensation	1,339	924
Changes in assets and liabilities	'	'
Accounts receivable	-712	72
Deferred costs	-764	-778
Prepaid expenses and other current assets	66	2,831
Accounts payable	445	177
Accrued compensation and benefits	-287	659
Accrued expenses and other current liabilities	255	214
Deferred rent	-82	'
Deferred revenue	574	355
Net cash provided by operating activities	3,558	6,549
Cash flows from investing activities	'	'
Purchases of property and equipment	-861	-1,089
Net cash used in investing activities	-861	-1,089
Cash flows from financing activities	'	'
Net proceeds from exercise of options to purchase common stock	587	1,049
Excess tax benefit from exercise of options to purchase common stock	25	'
Net cash provided by financing activities	612	1,049
Net increase in cash and cash equivalents	3,309	6,509
Cash and cash equivalents at beginning of period	131,294	66,050
Cash and cash equivalents at end of period	$134,603	$72,559

General

General	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
General	'
	NOTE A – General
	Business Description
	We are a leading provider of cloud-based supply chain management solutions, providing prewired, proven integrations and comprehensive retail performance analytics to thousands of customers worldwide. We provide our solutions through the SPS Commerce platform, a cloud-based software suite that improves the way suppliers, retailers, distributors and other customers manage and fulfill orders. We derive the majority of our revenues from thousands of monthly recurring subscriptions from businesses that utilize our solutions.
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements include the accounts of SPS Commerce, Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in the condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not include all of the information and notes required by GAAP. We have included all normal recurring adjustments considered necessary to give a fair statement of our financial position, results of operations and cash flows for the interim periods shown. Operating results for these interim periods are not necessarily indicative of the results to be expected for the full year. The December 31, 2013 condensed consolidated balance sheet data was derived from our audited financial statements at that date. For further information, refer to the consolidated financial statements and accompanying notes for the year ended December 31, 2013 included in our Annual Report on Form 10-K as filed with the Securities and Exchange Commission on February 20, 2014.
	Use of Estimates
	Preparing financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.
	Significant Accounting Policies
	During the three months ended March 31, 2014, there were no material changes in our significant accounting policies. See Note A to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2013, as filed with the Securities and Exchange Commission on February 20, 2014, for additional information regarding our significant accounting policies.
	Recent Accounting Pronouncements
	We have evaluated all recent accounting pronouncements and believe that none of them will have a material effect on our consolidated financial statements.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets, net	3 Months Ended
	Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets, net	'
	NOTE B – Goodwill and Intangible Assets, net
	There was no change in our goodwill for the three months ended March 31, 2014.
	Intangible assets included the following (in thousands):
		March 31, 2014							December 31, 2013
		Carrying		Accumulated					Carrying		Accumulated
		Amount		Amortization			Net		Amount		Amortization			Net
	Subscriber relationships	$	23,160	$	(7,007	)	$	16,153	$	23,160	$	(6,376	)	$	16,784
	Non-competition agreements		1,710		(1,498	)		212		1,710		(1,412	)		298
		$	24,870	$	(8,505	)	$	16,365	$	24,870	$	(7,788	)	$	17,082
	Amortization expense for intangible assets was $717,000 for each of the three months ended March 31, 2014 and 2013, respectively.
	At March 31, 2014, future amortization expense for intangible assets was as follows (in thousands):
	Remainder of 2014	$	1,970
	2015		2,578
	2016		2,578
	2017		2,557
	2018		2,062
	Thereafter		4,620
		$	16,365

Line_of_Credit

Line of Credit	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Line of Credit	'
	NOTE C – Line of Credit
	We have a revolving credit agreement with JPMorgan Chase Bank, N.A. which provides for a $20 million revolving credit facility that we may draw upon from time to time, subject to certain terms and conditions, and will mature on September 30, 2016.
	There were no borrowings outstanding at March 31, 2014 and we were in compliance with all covenants under the revolving credit agreement as of that date.

StockBased_Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock-Based Compensation	'
	NOTE D – Stock-Based Compensation
	Our equity compensation plans provide for the grant of incentive and nonqualified stock options, as well as other stock-based awards including restricted stock and restricted stock units, to employees, non-employee directors and other consultants who provide services to us. Restricted stock awards result in the issuance of new shares when granted. For other stock-based awards, new shares are issued when the award is exercised, vested or released according to the terms of the agreement. In January 2014, 965,527 additional shares were reserved for future issuance under our 2010 Equity Incentive Plan. At March 31, 2014, there were approximately 2.6 million shares available for grant under approved equity compensation plans.
	We recorded non-cash stock-based compensation expense of $1.3 million and $924,000 for the three months ended March 31, 2014 and 2013, respectively. This expense was allocated as follows (in thousands):
		Three Months Ended
		March 31,
		2014			2013
	Cost of revenues	$	153		$	103
	Operating expenses
	Sales and marketing		482			342
	Research and development		93			61
	General and administrative		611			418
	Total stock-based compensation expense	$	1,339		$	924
	As of March 31, 2014, there was approximately $11.5 million of unrecognized stock-based compensation expense under our equity compensation plans, which is expected to be recognized on a straight line basis over a weighted average period of 3.1 years.
	Stock Options
	Stock options generally vest over four years and have a contractual term of seven to ten years from the date of grant. Our stock option activity was as follows:
					Weighted Average
		Options			Exercise Price
		(#)			($/share)
	Outstanding at December 31, 2013		1,097,223		$	19.62
	Granted		119,143			65.95
	Exercised		(65,077	)		8.95
	Forfeited		(9,067	)		38.94
	Outstanding at March 31, 2014		1,142,222			24.91
	Of the total outstanding options at March 31, 2014, 684,071 were exercisable with a weighted average exercise price of $15.74 per share. The total outstanding options had a weighted average remaining contractual life of 5.9 years.
	The weighted average fair value per share of options granted during the first three months of 2014 was $26.24 and this was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:
	Weighted-average volatility		44.3	%
	Expected dividend yield		0	%
	Expected life (in years)		4.6
	Weighted-average risk-free interest rate		1.43	%
	Restricted Stock Units and Awards
	Restricted stock units vest over four years and, upon vesting, the holder is entitled to receive shares of our common stock. With restricted stock awards, shares of our common stock are issued when the award is granted and the restrictions lapse over one year.
	Our restricted stock units activity was as follows:
		Restricted Stock			Weighted Average
		Units			Grant Date Fair
		(#)			Value ($/share)
	Outstanding at December 31, 2013		102,644		$	33.77
	Granted		38,236			65.95
	Vested and common stock issued		(25,732	)		32.46
	Forfeited		(1,145	)		35.42
	Outstanding at March 31, 2014		114,003			44.84
	The number of restricted stock units outstanding at March 31, 2014 included 4,942 units that have vested but for which shares of common stock have not yet been issued pursuant to the terms of the agreement.
	Our restricted stock awards activity was as follows:
		Restricted Stock			Weighted Average
		Awards			Grant Date Fair
		(#)			Value ($/share)
	Outstanding at December 31, 2013		1,422		$	48.66
	Restricted common stock issued		—			—
	Restrictions lapsed		(1,185	)		48.66
	Forfeited		(237	)		48.66
	Outstanding at March 31, 2014		—			—
	Employee Stock Purchase Plan
	Our employee stock purchase plan allows participating employees to purchase shares of our common stock at a discount through payroll deductions. The plan is available to all employees subject to certain eligibility requirements. Participating employees may purchase common stock, on a voluntary after-tax basis, at a price that is the lower of 85% of the fair market value of one share of common stock at the beginning or end of each stock purchase period. The plan consists of two six-month offering periods, beginning on January 1 and July 1 of each calendar year. A total of 1.2 million shares of common stock are reserved for issuance under the plan.
	For the offering period that began on January 1, 2014, we withheld approximately $369,000 from employees participating in the plan as of March 31, 2014.
	For the three months ended March 31, 2014, we recorded approximately $106,000 of stock-based compensation expense associated with the employee stock purchase plan. The fair value was estimated based on the market price of our common stock at the beginning of each offering period and using the Black-Scholes option pricing model with the following assumptions:
	Expected volatility		48.9	%
	Expected dividend yield		0	%
	Expected life (in years)		0.5
	Risk-free interest rate		0.1	%

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	NOTE E – Income Taxes
	We record our interim provision for income taxes by applying our estimated annual effective tax rate to our year-to-date pretax income and adjust the provision for discrete tax items recorded in the period. Differences between our effective tax rate and statutory tax rates are primarily due to the impact of meals and entertainment expense, employee stock purchase plan expense, as well as the federal R&D credit.
	We recorded income tax expense of $218,000 for the three months ended March 31, 2014. We recorded an income tax benefit of $66,000 for the three months ended March 31, 2013. Our provisions for income taxes included current foreign and state income tax expense, as well as deferred tax expense.
	We are subject to U.S federal income tax as well as income tax in various state and international jurisdictions. We are generally subject to tax examinations for all prior years due to our net operating loss carryforwards. As of March 31, 2014, we were not under any income tax audits by tax authorities.
	As of March 31, 2014 we do not have any unrecognized tax benefits. It is our practice to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. We do not expect any material changes in our unrecognized tax positions over the next 12 months.

Net_Income_Per_Share

Net Income Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Net Income Per Share	'
	NOTE F – Net Income Per Share
	Basic net income per share has been computed using the weighted average number of shares of common stock outstanding during each period. Diluted net income per share also includes the impact of our outstanding potential common shares, including options and restricted stock units. Potential common shares that are anti-dilutive are excluded from the calculation of diluted net income per share.
	The following table presents the components of the computation of basic and diluted net income per share for the periods indicated (in thousands, except per share amounts):
		Three Months Ended
		March 31,
		2014		2013
	Numerator
	Net income	$	373	$	199
	Denominator
	Weighted average common shares outstanding, basic		16,155		14,884
	Options to purchase common stock		616		627
	Restricted stock units		57		51
	Employee stock purchase plan		2		2
	Weighted average common shares outstanding, diluted		16,830		15,564
	Net income per share
	Basic	$	0.02	$	0.01
	Diluted	$	0.02	$	0.01
	The effect of approximately 120,000 and 201,000 outstanding potential common shares was excluded from the calculation of diluted net income per share for the three months ended March 31, 2014 and 2013, respectively.

General_Policies

General (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Business Description	'
	Business Description
	We are a leading provider of cloud-based supply chain management solutions, providing prewired, proven integrations and comprehensive retail performance analytics to thousands of customers worldwide. We provide our solutions through the SPS Commerce platform, a cloud-based software suite that improves the way suppliers, retailers, distributors and other customers manage and fulfill orders. We derive the majority of our revenues from thousands of monthly recurring subscriptions from businesses that utilize our solutions.
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements include the accounts of SPS Commerce, Inc. and its subsidiaries. All intercompany accounts and transactions have been eliminated in the condensed consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, these condensed consolidated financial statements do not include all of the information and notes required by GAAP. We have included all normal recurring adjustments considered necessary to give a fair statement of our financial position, results of operations and cash flows for the interim periods shown. Operating results for these interim periods are not necessarily indicative of the results to be expected for the full year. The December 31, 2013 condensed consolidated balance sheet data was derived from our audited financial statements at that date. For further information, refer to the consolidated financial statements and accompanying notes for the year ended December 31, 2013 included in our Annual Report on Form 10-K as filed with the Securities and Exchange Commission on February 20, 2014.
Use of Estimates	'
	Use of Estimates
	Preparing financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.
Significant Accounting Policies	'
	Significant Accounting Policies
	During the three months ended March 31, 2014, there were no material changes in our significant accounting policies. See Note A to the consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2013, as filed with the Securities and Exchange Commission on February 20, 2014, for additional information regarding our significant accounting policies.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	We have evaluated all recent accounting pronouncements and believe that none of them will have a material effect on our consolidated financial statements.

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets, net (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Intangible Assets	'
	Intangible assets included the following (in thousands):
		March 31, 2014							December 31, 2013
		Carrying		Accumulated					Carrying		Accumulated
		Amount		Amortization			Net		Amount		Amortization			Net
	Subscriber relationships	$	23,160	$	(7,007	)	$	16,153	$	23,160	$	(6,376	)	$	16,784
	Non-competition agreements		1,710		(1,498	)		212		1,710		(1,412	)		298
		$	24,870	$	(8,505	)	$	16,365	$	24,870	$	(7,788	)	$	17,082
Future Amortization Expense for Intangible Assets	'
	At March 31, 2014, future amortization expense for intangible assets was as follows (in thousands):
	Remainder of 2014	$	1,970
	2015		2,578
	2016		2,578
	2017		2,557
	2018		2,062
	Thereafter		4,620
		$	16,365

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Stock-Based Compensation Expense	'
	This expense was allocated as follows (in thousands):
		Three Months Ended
		March 31,
		2014			2013
	Cost of revenues	$	153		$	103
	Operating expenses
	Sales and marketing		482			342
	Research and development		93			61
	General and administrative		611			418
	Total stock-based compensation expense	$	1,339		$	924
Stock Option Activity	'
	Our stock option activity was as follows:
					Weighted Average
		Options			Exercise Price
		(#)			($/share)
	Outstanding at December 31, 2013		1,097,223		$	19.62
	Granted		119,143			65.95
	Exercised		(65,077	)		8.95
	Forfeited		(9,067	)		38.94
	Outstanding at March 31, 2014		1,142,222			24.91
Weighted Average Fair Value Per Share of Options Granted, Assumptions	'
	The weighted average fair value per share of options granted during the first three months of 2014 was $26.24 and this was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions:
	Weighted-average volatility		44.3	%
	Expected dividend yield		0	%
	Expected life (in years)		4.6
	Weighted-average risk-free interest rate		1.43	%
Weighted Average Fair Value Per Share, Employee Stock Purchase Plan, Assumptions	'
	The fair value was estimated based on the market price of our common stock at the beginning of each offering period and using the Black-Scholes option pricing model with the following assumptions:
	Expected volatility		48.9	%
	Expected dividend yield		0	%
	Expected life (in years)		0.5
	Risk-free interest rate		0.1	%
Restricted Stock Units [Member]	'
Restricted Stock Units and Restricted Stock Awards	'
	Our restricted stock units activity was as follows:
		Restricted Stock			Weighted Average
		Units			Grant Date Fair
		(#)			Value ($/share)
	Outstanding at December 31, 2013		102,644		$	33.77
	Granted		38,236			65.95
	Vested and common stock issued		(25,732	)		32.46
	Forfeited		(1,145	)		35.42
	Outstanding at March 31, 2014		114,003			44.84
Restricted Stock Award [Member]	'
Restricted Stock Units and Restricted Stock Awards	'
	Our restricted stock awards activity was as follows:
		Restricted Stock			Weighted Average
		Awards			Grant Date Fair
		(#)			Value ($/share)
	Outstanding at December 31, 2013		1,422		$	48.66
	Restricted common stock issued		—			—
	Restrictions lapsed		(1,185	)		48.66
	Forfeited		(237	)		48.66
	Outstanding at March 31, 2014		—			—

Net_Income_Per_Share_Tables

Net Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Components of Computation of Basic and Diluted Net Income Per Share	'
	The following table presents the components of the computation of basic and diluted net income per share for the periods indicated (in thousands, except per share amounts):
		Three Months Ended
		March 31,
		2014		2013
	Numerator
	Net income	$	373	$	199
	Denominator
	Weighted average common shares outstanding, basic		16,155		14,884
	Options to purchase common stock		616		627
	Restricted stock units		57		51
	Employee stock purchase plan		2		2
	Weighted average common shares outstanding, diluted		16,830		15,564
	Net income per share
	Basic	$	0.02	$	0.01
	Diluted	$	0.02	$	0.01

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets, Net - Intangible Assets (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	$24,870	$24,870
Accumulated Amortization	-8,505	-7,788
Net	16,365	17,082
Subscriber relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	23,160	23,160
Accumulated Amortization	-7,007	-6,376
Net	16,153	16,784
Non-competition agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Carrying Amount	1,710	1,710
Accumulated Amortization	-1,498	-1,412
Net	$212	$298

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets, Net - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'	'
Amortization of intangible assets	$717	$717

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets, Net - Future Amortization Expense for Intangible Assets (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'	'
Remainder of 2014	$1,970	'
2015	2,578	'
2016	2,578	'
2017	2,557	'
2018	2,062	'
Thereafter	4,620	'
Net	$16,365	$17,082

Line_of_Credit_Additional_Info

Line of Credit - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Line of Credit Facility [Line Items]	'
Revolving credit facility, amount	$20
Revolving credit facility, maturity date	30-Sep-16
Revolving Credit Facility [Member]	'
Line of Credit Facility [Line Items]	'
Borrowings outstanding revolving credit agreement	$0

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended			1 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Jan. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014
	OfferingPeriods		Employee Stock Purchase Plan [Member]	Equity Incentive Plan 2010 [Member]	Restricted Stock Units [Member]	Restricted Stock Award [Member]	Maximum [Member]	Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'
Additional shares were authorized under 2010 Equity Incentive Plan	'	'	'	965,527	'	'	'	'
Shares available for grant	2,600,000	'	'	'	'	'	'	'
Stock-based compensation expense	$1,339,000	$924,000	$106,000	'	'	'	'	'
Unrecognized stock-based compensation expense	11,500,000	'	'	'	'	'	'	'
Unrecognized stock-based compensation, expected to be recognized, weighted average period	'3 years 1 month 6 days	'	'	'	'	'	'	'
Stock options contractual term Range	'	'	'	'	'	'	'10 years	'7 years
Stock options vest, period	'4 years	'	'	'	'4 years	'	'	'
Stock options contractual term, from the date of grant	'Seven to ten years	'	'	'	'	'	'	'
Stock options exercisable	684,071	'	'	'	'	'	'	'
Weighted average exercise price	$15.74	'	'	'	'	'	'	'
Weighted average remaining contractual life	'5 years 10 months 24 days	'	'	'	'	'	'	'
Weighted average fair value per share of options granted	$26.24	'	'	'	'	'	'	'
Restricted stock awards units vest over, period	'	'	'	'	'	'1 year	'	'
Number of RSU's vested and not issued during the period	4,942	'	'	'	'	'	'	'
Percentage of common stock on fair market value	85.00%	'	'	'	'	'	'	'
Number of offerings per year	2	'	'	'	'	'	'	'
Common stock reserved for future issuance	'	'	1,200,000	'	'	'	'	'
Employee stock purchase plan, employees contribution	$369,000	'	'	'	'	'	'	'

StockBased_Compensation_StockB

Stock-Based Compensation - Stock-Based Compensation Expense (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	$1,339	$924
Cost of revenues [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	153	103
Sales and marketing [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	482	342
Research and development [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	93	61
General and administrative [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Stock-based compensation expense	$611	$418

StockBased_Compensation_Stock_

Stock-Based Compensation - Stock Option Activity (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Options Outstanding, Beginning balance	1,097,223
Options, Granted	119,143
Options, Exercised	-65,077
Options, Forfeited	-9,067
Options Outstanding, Ending balance	1,142,222
Weighted Average Exercise Price, Outstanding, Beginning Balance	$19.62
Weighted Average Exercise Price, Granted	$65.95
Weighted Average Exercise Price, Exercised	$8.95
Weighted Average Exercise Price, Forfeited	$38.94
Weighted Average Exercise Price, Outstanding, Ending Balance	$24.91

StockBased_Compensation_Weight

Stock-Based Compensation - Weighted Average Fair Value Per Share of Options Granted, Assumptions (Detail) (Stock Options [Member])	3 Months Ended
	Mar. 31, 2014
Stock Options [Member]	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'
Weighted-average volatility	44.30%
Expected dividend yield	0.00%
Expected life (in years)	'4 years 7 months 6 days
Weighted-average risk-free interest rate	1.43%

StockBased_Compensation_Restri

Stock-Based Compensation - Restricted Stock Units (Detail) (Restricted Stock Units [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock awards, Outstanding, Beginning Balance	102,644
Granted, stock units	38,236
Vested, stock units	-25,732
Forfeited, stock units	-1,145
Stock awards, Outstanding, Ending Balance	114,003
Weighted average grant date fair value, Outstanding, Beginning Balance	$33.77
Granted, Weighted Average Grant Date Fair Value	$65.95
Vested, Weighted Average Grant Date Fair Value	$32.46
Forfeited, Weighted Average Grant Date Fair Value	$35.42
Weighted average grant date fair value, Outstanding, Ending Balance	$44.84

StockBased_Compensation_Restri1

Stock-Based Compensation - Restricted Stock Awards (Detail) (Restricted Stock Award [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Restricted Stock Award [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock awards, Outstanding, Beginning Balance	1,422
Restricted common stock issued, stock awards	'
Restrictions lapsed, stock awards	-1,185
Forfeited, stock awards	-237
Weighted average grant date fair value, Outstanding, Beginning Balance	$48.66
Restricted common stock issued, Weighted Average Grant Date Fair Value	'
Restrictions lapsed, Weighted Average Grant Date Fair Value	$48.66
Forfeited, Weighted Average Grant Date Fair Value	$48.66
Weighted average grant date fair value, Outstanding, Ending Balance	'

StockBased_Compensation_Fair_V

Stock-Based Compensation - Fair Value Estimation of Common Stock Using Black-Scholes Option Pricing Model, Assumptions (Detail) (Employee Stock Purchase Plan [Member])	3 Months Ended
	Mar. 31, 2014
Employee Stock Purchase Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Expected volatility	48.90%
Expected dividend yield	0.00%
Expected life (in years)	'6 months
Risk-free interest rate	0.10%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Income tax benefit (expense)	($218,000)	$66,000
Unrecognized tax benefits	0	'
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$0	'

Net_Income_Per_Share_Component

Net Income Per Share - Components of Computation of Basic and Diluted Net Income Per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Numerator	'	'
Net income	$373	$199
Denominator	'	'
Weighted average common shares outstanding, basic	16,155	14,884
Options to purchase common stock	616	627
Restricted stock units	57	51
Employee stock purchase plan	2	2
Weighted average common shares outstanding, diluted	16,830	15,564
Net income per share	'	'
Basic	$0.02	$0.01
Diluted	$0.02	$0.01

Net_Income_Per_Share_Additiona

Net Income Per Share - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Outstanding potential common shares excluded from computation of net income per share	120,000	201,000