Marin Software (MRIN) 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'MRIN	'
Entity Registrant Name	'MARIN SOFTWARE INC	'
Entity Central Index Key	'0001389002	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	34,972,220

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$75,757	$104,407	[1]
Accounts receivable, net	20,075	14,921	[1]
Prepaid expenses and other current assets	4,075	2,695	[1]
Total current assets	99,907	122,023	[1]
Property and equipment, net	13,817	14,417	[1]
Intangible assets, net	7,884	'
Goodwill	11,681	'
Other noncurrent assets	1,013	937	[1]
Total assets	134,302	137,377	[1]
Current liabilities	'	'
Accounts payable	1,801	1,018	[1]
Accrued expenses and other current liabilities	13,135	10,950	[1]
Deferred revenues	3,171	2,566	[1]
Current portion of long-term debt	2,787	3,253	[1]
Total current liabilities	20,894	17,787	[1]
Long-term debt, less current portion	1,151	2,962	[1]
Other long-term liabilities	1,127	1,284	[1]
Total liabilities	23,172	22,033	[1]
Stockholders' equity	'	'
Common stock, $0.001 par value - 500,000 shares authorized, 35,632 and 33,133 shares issued, 34,925 and 32,953 outstanding at September 30, 2014, and December 31, 2013, respectively	35	33	[1]
Additional paid-in capital	249,010	228,512	[1]
Accumulated deficit	-137,542	-113,201	[1]
Accumulated other comprehensive loss	-373	0	[1]
Total stockholders' equity	111,130	115,344	[1]
Total liabilities and stockholders' equity	$134,302	$137,377	[1]
[1]	Derived from our audited consolidated financial statements as of December 31, 2013.

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	500,000	500,000
Common stock, shares issued	35,632	33,133
Common stock, shares outstanding	34,925	32,953

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Comprehensive Loss (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues, net	$25,684	$20,113	$72,353	$55,486
Cost of revenues	9,145	7,944	26,291	23,012
Gross profit	16,539	12,169	46,062	32,474
Operating expenses	'	'	'	'
Sales and marketing	12,186	10,281	36,152	31,090
Research and development	7,824	5,072	20,535	15,055
General and administrative	5,682	4,681	15,466	12,755
Total operating expenses	25,692	20,034	72,153	58,900
Loss from operations	-9,153	-7,865	-26,091	-26,426
Interest expense, net	-33	-82	-162	-375
Other income (expenses), net	201	-16	-80	-505
Loss before (provision for) benefit from income taxes	-8,985	-7,963	-26,333	-27,306
(Provision for) benefit from income taxes	-259	-230	1,992	-485
Net loss	-9,244	-8,193	-24,341	-27,791
Foreign currency translation adjustments	-589	0	-373	0
Comprehensive loss	-9,833	-8,193	-24,714	-27,791
Net loss per share available to common stockholders, basic and diluted	($0.27)	($0.25)	($0.72)	($1.15)
Weighted-average shares used to compute net loss per share available to common stockholders, basic and diluted	34,849	32,522	34,018	24,136
Amortization of intangible assets is allocated as follows (Note 4):	'	'	'	'
Amortization of intangible assets	485	0	646	0
Cost of Revenues [Member]	'	'	'	'
Stock-based compensation is allocated as follows (Note 9):	'	'	'	'
Allocation of stock-based compensation	173	239	576	689
Amortization of intangible assets is allocated as follows (Note 4):	'	'	'	'
Amortization of intangible assets	171	0	227	0
Sales and Marketing [Member]	'	'	'	'
Stock-based compensation is allocated as follows (Note 9):	'	'	'	'
Allocation of stock-based compensation	530	349	1,381	1,003
Amortization of intangible assets is allocated as follows (Note 4):	'	'	'	'
Amortization of intangible assets	112	0	150	0
Research and Development [Member]	'	'	'	'
Stock-based compensation is allocated as follows (Note 9):	'	'	'	'
Allocation of stock-based compensation	1,362	379	2,449	990
Amortization of intangible assets is allocated as follows (Note 4):	'	'	'	'
Amortization of intangible assets	170	0	227	0
General and Administrative [Member]	'	'	'	'
Stock-based compensation is allocated as follows (Note 9):	'	'	'	'
Allocation of stock-based compensation	851	451	1,947	1,270
Amortization of intangible assets is allocated as follows (Note 4):	'	'	'	'
Amortization of intangible assets	$32	$0	$42	$0

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Operating activities	'		'
Net loss	($24,341)		($27,791)
Adjustments to reconcile net loss to net cash used in operating activities	'		'
Depreciation	4,145		3,428
Amortization of internally developed software	1,390		786
Amortization of intangible assets	646		0
Noncash interest expense related to warrants issued in connection with debt	113		436
Stock-based compensation	6,353		3,952
Loss on disposal of property and equipment	16		0
Provision for bad debt	549		288
Deferred income tax benefits	-2,775		0
Excess tax benefits from stock-based award activities	-103		-41
Changes in operating assets and liabilities, net of effect of acquisition	'		'
Accounts receivable	-5,369		-1,041
Prepaid expenses and other current assets	-1,360		-1,691
Other assets	68		-34
Accounts payable	139		212
Deferred revenues	584		2,266
Accrued expenses and other current liabilities	-183		1,135
Net cash used in operating activities	-20,128		-18,095
Investing activities	'		'
Purchases of property and equipment	-2,728		-3,859
Capitalization of internally developed software	-2,381		-2,566
Acquisition of business, net of cash acquired	-4,151		0
Net cash used in investing activities	-9,260		-6,425
Financing activities	'		'
Proceeds from issuance of common stock in initial public offering, net of issuance costs	0		109,414
Proceeds from issuance of note payable, net of issuance costs	0		1,666
Repayment of note payable	-2,391		-8,775
Repurchase of unvested shares	-7		-69
Proceeds from exercise of common stock options	1,977		1,193
Proceeds from employee stock purchase plan	1,056		1,205
Excess tax benefits from stock-based award activities	103		41
Net cash provided by financing activities	738		104,675
Net (decrease) increase in cash and cash equivalents	-28,650		80,155
Cash and cash equivalents	'		'
Beginning of period	104,407	[1]	31,540
End of period	75,757		111,695
Supplemental disclosure of noncash investing and financing activities	'		'
Accounts payable related purchases of property and equipment	100		201
Acquisition of equipment through capital lease	0		3,167
Conversion of convertible preferred stock to common stock	0		105,710
Conversion of warrant to purchase convertible preferred stock to common stock warrant	0		745
Issuance of common stock under employee stock purchase plan	715		0
Issuance of common stock in connection with business acquisition	11,195		0
Accrued debt issuance costs	$0		$25
[1]	Derived from our audited consolidated financial statements as of December 31, 2013.

Summary_of_Business_and_Signif

Summary of Business and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary of Business and Significant Accounting Policies	'
	1. Summary of Business and Significant Accounting Policies
	Marin Software Incorporated (the “Company”) was incorporated in Delaware in March 2006. The Company provides a leading cross-channel performance advertising cloud, offering an integrated software-as-a-service, or SaaS, platform for search, display, and social advertising channels. The Company’s platform helps digital marketers improve financial performance, realize efficiencies and time savings, and make better business decisions. The Company’s corporate headquarters are located in San Francisco, California, and the Company has additional offices in the following locations: New York, Chicago, Austin, Portland, London, Dublin, Hamburg, Paris, Tokyo, Singapore, Sydney and Shanghai.
	Basis of Presentation and Consolidation
	The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of only normal recurring items, considered necessary for fair statement have been included. The results of operations for the three and nine months ended September 30, 2014 are not necessarily indicative of the results to be expected for the year ended December 31, 2014 or for other interim periods or for future years.
	The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated on consolidation. The condensed consolidated balance sheet as of December 31, 2013 is derived from audited financial statements as of that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2013 filed with the Securities and Exchange Commission (“SEC”) on February 28, 2014.
	Recent Accounting Pronouncements
	In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-15, Disclosures of Uncertainties About an Entity’s Ability to Continue as a Going Concern. The new standard provides guidance around management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. Early adoption is permitted. The Company does not expect that this guidance will have a material impact on its consolidated results of operations or financial condition.
	In June 2014, the FASB issued ASU 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The guidance requires that a performance target that affects vesting and could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance as it relates to such awards. This guidance is effective for us in our first quarter of fiscal year ending December 31, 2017. We are currently evaluating the impact of our pending adoption of this ASU on the Company’s consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates when compared with the current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. This guidance will be effective for the Company in the first quarter of its fiscal year ending December 31, 2017. The Company is currently in the process of evaluating the impact of pending adoption of this ASU on the Company’s consolidated financial statements.
	In July 2013, the FASB issued a new accounting standard update on the financial statement presentation of unrecognized tax benefits. The new guidance provides that a liability related to an unrecognized tax benefit would be presented as a reduction of a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward if such settlement is required or expected in the event the uncertain tax position is disallowed. The Company adopted the standard update in the first quarter of 2014, and its adoption had no impact on the Company’s consolidated results of operations or financial condition.
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with an original or remaining maturity from the Company’s date of purchase of 90 days or less to be cash equivalents. Deposits held with financial institutions are likely to exceed the amount of insurance on these deposits. Cash equivalents consist of money market funds, which are readily convertible into cash and are stated at cost, which approximates fair market value. Cash equivalents were $69,017 and $98,987 as of September 30, 2014 and December 31, 2013, respectively.
	Fair Value of Financial Instruments
	The Company’s financial instruments, including cash equivalents, accounts receivable and accounts payable are carried at cost, which approximates fair value because of the short-term nature of those instruments. Based on borrowing rates available to the Company for loans with similar terms and maturities, the carrying value of borrowings approximates fair value (Level 2 within the fair value hierarchy).
	The Company measures and reports certain financial assets at fair value on a recurring basis, including its investments in money market funds. The fair value hierarchy prioritizes the inputs into three broad levels:
	Level 1		Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.
	Level 2		Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
	Level 3		Inputs are unobservable inputs based on the Company’s assumptions.
	A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
	The Company’s cash equivalents as of September 30, 2014 and December 31, 2013 consisted of money market funds with original maturity dates of less than three months from the date of their respective purchase. Cash equivalents are classified as Level 1. The fair value of the Company’s money market funds approximated amortized cost and, as such, there were no unrealized gains or losses on money market funds as of September 30, 2014 and December 31, 2013.
	The following table presents the changes in the preferred stock warrant obligation measured and recorded at fair value on a recurring basis, using significant unobservable inputs (Level 3) during the nine months ended September 30, 2013. There were no changes in the preferred stock warrant obligation during the nine months ended September 30, 2014, as the underlying warrants were no longer outstanding subsequent to the Company’s initial public offering.
			Nine Months Ended
			September 30, 2013
	Balances at beginning of period		$	507
	Change in estimated fair value of warrant			238
	Conversion to common stock warrant			(745	)
	Balances at end of period		$	—
	Allowance for Doubtful Accounts and Revenue Credits
	The allowance for doubtful accounts reflects the Company’s best estimate of probable losses inherent in the Company’s receivables portfolio determined on the basis of historical experience, specific allowances for known troubled accounts and other currently available evidence. The Company has not experienced significant credit losses from its accounts receivable. The Company performs a regular review of its customers’ payment histories and associated credit risks and it does not require collateral from its customers. Certain contracts with advertising agencies contain sequential liability provisions, whereby the agency does not have an obligation to pay the Company until payment is received from the agency’s customers. In these circumstances, the Company evaluates the credit worthiness of the agency’s customers, in addition to the agency itself.
	From time to time the Company provides revenue credits to customers and an allowance is made based on historical credit activity. As of September 30, 2014 and December 31, 2013, the Company recorded an allowance for potential customer credits in the amount of $599 and $349, respectively.
	Property and Equipment
	Property and equipment are stated at historical cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the related assets.
	The useful lives of the property and equipment are as follows:
	Computer equipment		3 to 5 years
	Office equipment, furniture and fixtures		3 to 5 years
	Software		3 years
	Leasehold improvements		Shorter of useful life or lease term
	Upon retirement or sale, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is reflected in operations. Major additions and improvements are capitalized while repairs and maintenance that do not extend the life of the asset are charged to operations as incurred. Depreciation and amortization expense is allocated to both cost of revenues and operating expenses.
	Internally Developed Software
	Costs incurred in the development phase are capitalized and amortized over the product’s estimated useful life, which is three years. The Company expenses all costs incurred that relate to planning and post implementation phases of development. Capitalized costs related to internally developed software under development are treated as construction in progress until the program, feature or functionality is ready for its intended use, at which time amortization commences. The Company capitalized internally developed software costs of $1,035 and $1,018 during the three months ended September 30, 2014 and 2013, respectively, and $2,381 and $2,566 during the nine months ended September 30, 2014 and 2013, respectively. Amortization of capitalized costs related to internally developed software for the three months ended September 30, 2014 and 2013 was $480 and $303, respectively, and for the nine months ended September 30, 2014 and 2013 was $1,390 and $786, respectively. As of September 30, 2014 and December 31, 2013, unamortized internally developed software costs totaled $5,226 and $4,236, respectively. Amortization of internally developed software is reflected in cost of revenues. Costs associated with minor enhancement and maintenance are expensed as incurred.
	Goodwill, Intangible Assets and Impairment Assessments
	Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Intangible assets that are not considered to have an indefinite useful life are amortized over their useful lives, which generally range from two to six years. Estimated remaining useful lives of purchased intangible assets are evaluated to assess whether events or changes in circumstances warrant a revision to the remaining periods of amortization. The carrying amounts of these assets will be periodically reviewed for impairment (at least annually for goodwill and indefinite lived intangible assets) and whenever events or changes in circumstances indicate that the carrying value of these assets may not be recoverable.
	Revenue Recognition
	The Company generates revenues principally from subscriptions either directly with advertisers or with advertising agencies to its platform for the management of search, display and social advertising. The Company’s subscription agreements are generally one year or longer in length. The Company’s subscription fee under most contracts is variable based on the value of the advertising spend that the Company’s advertisers manage through the Company’s platform and is generally invoiced on a monthly basis. Contracts with direct advertisers and certain contracts with advertising agencies also include a minimum monthly fee that is payable over the duration of the contract. The Company’s customers do not have the right to take possession of the software supporting the application service at any time, nor do the arrangements contain general rights of return. The Company commences revenue recognition for both direct advertisers and advertising agencies when all of the following conditions are met:
		•		persuasive evidence of an arrangement exists;
		•		the Company’s platform is made available to the customer;
		•		the fee is fixed or determinable, and;
		•		collection is reasonably assured.
	The Company recognizes the total minimum fee for both direct advertisers and advertising agencies, where applicable, over the duration of the contract, commencing on the date that the Company’s platform is made available to the customer, provided revenues recognized do not exceed amounts that are invoiced and due. The variable fee, which is based on a percentage of the value of the advertising spend managed through the Company’s platform, is recognized once the amount is fixed or determinable, which is generally on a monthly basis concurrent with the issuance of the customer invoice. Signed contracts are used as evidence of an arrangement. The Company assesses collectability based on a number of factors such as past collection history with the customer and creditworthiness of the customer. Certain agreements with advertising agencies also contain sequential liability provisions, which provide that the agency has no obligation to pay the Company until the agency receives payment from its customers. In these circumstances, the Company evaluates the credit worthiness of the agency’s customers, in addition to the agency itself, to conclude whether or not collectability is reasonably assured. If the Company determines collectability is not reasonably assured, the Company defers the revenue recognition until collectability becomes reasonably assured.
	Cost of Revenues
	Cost of revenues primarily consists of costs related to hosting the Company’s cloud-based platform, providing implementation and ongoing customer support, data communications expenses, salaries and benefits of operations and support personnel, software license fees, costs associated with website development activities, allocated overhead, amortization expense associated with capitalized internal use software and intangible assets and property and equipment depreciation.
	Stock-Based Compensation
	Stock-based compensation is measured at grant date based on the fair value of the award and is expensed on a straight-line basis over the requisite service period.
	Fair values of stock option awards are determined on the date of grant using an option-pricing model. The Company has selected the Black-Scholes option pricing model to estimate the fair value of its stock option awards to employees and non-employees. In applying the Black-Scholes option pricing model, the Company’s determination of the fair value of the stock option award on the date of grant is affected by the Company’s fair value of its common stock, as well as assumptions regarding a number of subjective variables. These variables include, but are not limited to, the Company’s expected stock price volatility and the optionholders’ actual and projected stock option exercise and employment termination behaviors.
	Restricted stock units (“RSUs”) are measured based on the fair market values of the underlying common stock on the dates of grant. Shares of common stock are issued on the vesting dates. For awards with graded vesting, the Company recognizes stock-based compensation expense over the requisite service period using the straight-line method, based on awards ultimately expected to vest. The Company estimates future forfeitures at the date of grant and revises the estimates, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
	Stock options issued to non-employees such as consultants are recorded at their fair value on the measurement date. The measurement of stock-based compensation is subject to periodic adjustment as the underlying equity instruments vest. The fair value of options granted to consultants is expensed when vested. Non-employee stock-based compensation expense was not material for all periods presented.
	See Note 9 for further information.

Business_Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Business Combinations	'
	2. Business Combinations
	On June 2, 2014, pursuant to the terms of an Agreement and Plan of Reorganization, a wholly-owned subsidiary of the Company merged with and into NowSpots, Inc., which conducted business as Perfect Audience (“Perfect Audience”), with NowSpots, Inc. surviving as a wholly-owned subsidiary of the Company. Perfect Audience specializes in display and social network ad retargeting, and its programmatic display and social advertising functions will expand the Company’s cross-channel capabilities.
	The acquisition was accounted for under the acquisition method of accounting in which the tangible and identifiable intangible assets and liabilities of Perfect Audience were recorded at their respective fair values as of the acquisition date, including an amount for goodwill representing the difference between the respective acquisition consideration and fair values of identifiable net assets. The fair value of assets acquired and liabilities assumed was recorded based on a preliminary valuation and the Company’s estimates and assumptions are subject to change within the measurement period. The primary areas of the purchase price allocation that are not yet finalized are related to the fair values of intangible assets acquired and residual goodwill.
	The total purchase price for the acquisition was $16,470, which consisted of 1,119 shares of the Company’s common stock valued at the closing date, and $5,275 in cash. Of the total purchase price, $4,865 was attributed to fair value of net liabilities assumed, $1,124 was cash acquired, and $8,530 was the fair value of intangible assets acquired with $11,681 as residual goodwill. The goodwill is primarily attributable to the synergies expected to arise after the acquisition and is not expected to be deductible for tax purposes.
	In addition, the Company issued 630 shares of common stock (with a closing date fair value of $6,301) to existing Perfect Audience employees in connection with the acquisition, which are conditioned upon such employees’ continuous employment with the Company. These shares have been excluded from the purchase consideration and will be recognized as post-acquisition stock-based compensation expense. The Company recognizes compensation expense equal to the grant date fair value of the common stock on a straight-line basis over the employee’s requisite service period.

Balance_Sheet_Components

Balance Sheet Components	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Balance Sheet Components	'
	3. Balance Sheet Components
	The following table shows the components of property and equipment as of the dates presented:
		September 30,			December 31,
		2014			2013
	Computer equipment	$	18,041		$	16,314
	Software		10,097			7,690
	Office equipment		722			571
	Furniture, fixtures and leasehold improvements		1,979			1,861
			30,839			26,436
	Less: Accumulated depreciation and amortization		(17,022	)		(12,019	)
		$	13,817		$	14,417
	Depreciation and amortization of internally developed software for the nine months ended September 30, 2014 and 2013 was $5,535 and $4,214, respectively.
	The following table shows the components of accrued expenses and other current liabilities as of the dates presented:
		September 30,			December 31,
		2014			2013
	Accrued salary and payroll related expenses	$	6,647		$	6,675
	Accrued accounts payable		3,982			2,773
	Customer advances		1,249			—
	Income tax payable		604			434
	Sales and use tax payable		262			466
	Other		391			602
		$	13,135		$	10,950

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	4. Goodwill and Intangible Assets
	The goodwill balance as of September 30, 2014 totaling $11,681 was the result of the business acquisition disclosed in Note 2 of these condensed consolidated financial statements.
	Intangible assets, excluding goodwill, consisted of the following:
		September 30,			Estimated
		2014			Useful Life
	Developed technology	$	6,110		6 years
	Customer relationships		1,290		4 years
	Non-compete agreements and tradename		1,130		2 - 3 years
			8,530
	Less: accumulated amortization		(646	)
		$	7,884
	Amortization expense of intangible assets was $485 and $646 for the three and nine months ended September 30, 2014, respectively, and none for the comparative periods presented.
	Future estimated amortization of intangible assets as of September 30, 2014 is presented below:
	Remaining three months of 2014	$	485
	Year ending December 31, 2015		1,938
	Year ending December 31, 2016		1,714
	Year ending December 31, 2017		1,483
	Year ending December 31, 2018 and thereafter		2,264
		$	7,884

Debt

Debt	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt	'
	5. Debt
	In February 2013, the Company entered into a capital lease arrangement with an equipment manufacturer to finance the acquisition of computer equipment. The lease has an effective interest rate of 6.0% and is repayable in 36 consecutive equal monthly installments of principal and interest. At the end of the lease period, the Company has the option to purchase the equipment at the estimated fair market value. As of September 30, 2014 and December 31, 2013, the net book value of the equipment under the capital lease was $1,703 and $2,495, respectively, and the remaining principal balance payable was $1,806 and $2,598, respectively.
	In September 2013, the Company entered into an amendment to its existing revolving credit facility pursuant to which Silicon Valley Bank agreed to increase the revolving credit facility to the lesser of $15,000 or 80% of the Company’s eligible accounts receivable. Also, the expiration date of the revolving credit facility was extended to July 31, 2015 and the annual interest rate was amended to 0.25% over the Prime Rate payable on a monthly basis. Additionally, the Company’s obligation to meet certain financial covenants will be waived while the Company’s unrestricted cash balance exceeds $50,000.
	The maturities of all outstanding debt, including the capital lease arrangement, as of September 30, 2014 are as follows:
	Years Ending
	2014	$	863
	2015		2,464
	2016		652
			3,979
	Less:
	Current portion		(2,787	)
	Discount on long-term debt		(41	)
	Noncurrent portion of debt	$	1,151

Convertible_Preferred_Stock

Convertible Preferred Stock	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Convertible Preferred Stock	'
	6. Convertible Preferred Stock
	All 18,753 shares of outstanding preferred stock were automatically converted into fully paid shares of common stock immediately prior to the closing of the Company’s initial public offering on March 27, 2013. Upon the occurrence of this conversion event, the outstanding warrant to purchase Series B convertible preferred stock converted into a warrant to purchase common stock. All of the outstanding shares of preferred stock converted into common stock at the conversion rate of 1:1.

Common_Stock

Common Stock	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Common Stock	'
	7. Common Stock
	As of September 30, 2014 and December 31, 2013, the Company was authorized to issue 500,000 shares of $0.001 par value common stock. Reserved shares of common stock are as follows:
		September 30,		December 31,
		2014		2013
	Options available for future grant		3,869		4,585
	Options outstanding		6,204		4,855
	RSUs outstanding		355		—
	Shares available for future issuance under ESPP		1,094		854
			11,522		10,294

Equity_Award_Plans

Equity Award Plans	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Equity Award Plans	'
	8. Equity Award Plans
	In April 2006, the Company’s Board of Directors adopted and the stockholders approved the 2006 Stock Option Plan (“2006 Plan”). The 2006 Plan provides for the grant of incentive stock options under the federal tax laws and nonstatutory stock options. Only employees may receive incentive stock options, but nonstatutory stock options may be granted to employees, nonemployee directors and consultants. The stock options are exercisable at a price equal to the market value of the underlying shares of common stock on the date of the grant as determined by the Company’s board of directors. The term of options granted under the 2006 Plan may not exceed ten years. Certain options are eligible for exercise prior to vesting. Exercised but unvested shares of common stock are subject to repurchase by the Company at the initial exercise price. The proceeds from the shares of common stock subject to repurchase are classified as a liability and reclassified to equity as the shares vest. Under the 2006 Plan’s early exercise feature, the Company had the right to repurchase 103 and 180 shares of common stock as of September 30, 2014 and December 31, 2013, respectively. The Company records cash received from the exercise of unvested stock options as a long-term liability, as well as the fair value of vested outstanding options to nonemployees. As of September 30, 2014 and December 31, 2013, $948 and $1,215, respectively, has been recorded as a long-term liability in the condensed consolidated balance sheets.
	In February 2013, the Company’s Board of Directors and stockholders approved the 2013 Equity Incentive Plan (“2013 Plan”), under which 4,500 shares of common stock were originally reserved for issuance. Additionally, all reserved and unissued shares under the 2006 Plan at the time the 2013 Plan became effective are eligible for issuance under the 2013 Plan. The 2013 Plan became effective on March 21, 2013, at which time the Company ceased to grant equity awards under the 2006 Plan. The 2013 Equity Incentive Plan authorizes the award of stock options, restricted stock awards, stock appreciation rights, RSUs, performance awards and stock bonuses to the Company’s employees, directors, consultants, independent contractors and advisors. On January 1 of each of the first 10 calendar years through 2023, the number of shares of common stock reserved under the 2013 Equity Incentive Plan will automatically increase by an amount equal to 5% of the total outstanding shares as of immediately preceding December 31, or such lesser number of shares as determined by the Company’s Board of Directors. Under the terms of the 2013 Plan, the shares available for issuance increased by approximately 1,648 shares of common stock on January 1, 2014.
	Stock Options
	A summary of stock option activity under the 2006 Plan and 2013 Plan is as follows:
		Options Outstanding
		Number of			Weighted		Weighted		Aggregate
		Shares			Average		Average		Intrinsic
					Exercise		Remaining		Value
					Price Per Share		Contractual
							Term
							(in Years)
	Balances at December 31, 2013		4,855		$	6.56		7.85	$	20,593
	Options granted		2,843			9.61		9.64
	Options exercised		(662	)		2.98		—
	Options forfeited and cancelled		(832	)		9.34		—
	Balances at September 30, 2014		6,204		$	7.96		8.09	$	10,730
	Options exercisable as of September 30, 2014		3,112		$	6.12		6.69	$	10,509
	Options vested as of September 30, 2014		2,304		$	5.09		6.27	$	9,564
	Options vested and expected to vest of September 30, 2014		5,812		$	7.84		8.01	$	10,671
	RSUs
	A summary of RSUs granted and unvested under the 2013 Plan as of September 30, 2014 is as follows:
		RSUs Outstanding
		Number of			Weighted Average
		RSUs			Fair Value
					Per Unit
	Granted and unvested at December 31, 2013		—		$	—
	RSUs granted		363			10.36
	RSUs vested		—			—
	RSUs forfeited		(8	)		10.56
	Granted and unvested at September 30, 2014		355		$	10.35
	Employee Stock Purchase Plan
	In February 2013, the Company’s Board of Directors and stockholders approved the 2013 Employee Stock Purchase Plan (“2013 ESPP”), under which 1,000 shares of common stock were originally reserved for issuance. The 2013 ESPP became effective on March 22, 2013. The 2013 ESPP provides generally for six-month purchase periods and the purchase price for shares of common stock purchased under the 2013 Employee Stock Purchase Plan will be 85% of the lesser of the fair market value of the common stock on (i) the first trading day of the applicable offering period and (ii) the last trading day of each purchase period in the applicable offering period. On January 1 of each of the first 10 calendar years following the first offering date, the number of shares reserved under the 2013 Employee Stock Purchase Plan will automatically increase by an amount equal to 1% of the total outstanding shares as of immediately preceding December 31, but not to exceed 700 shares. Under the terms of the 2013 ESPP, the shares available for issuance increased by approximately 329 shares on January 1, 2014. During the three and nine months ended September 30, 2014, 90 shares were issued under the 2013 ESPP. During the three and nine months ended September 30, 2013, no shares were issued under the 2013 ESPP.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	9. Stock-Based Compensation
	For stock-based awards granted by the Company, stock-based compensation cost is measured at grant date based on the fair value of the award and is expensed over the requisite service period. The Company recorded stock-based compensation of $2,916 and $1,418 for the three months ended September 30, 2014 and 2013, respectively, and $6,353 and $3,952 for the nine months ended September 30, 2014 and 2013, respectively.
	Stock Options
	The Company uses the Black-Scholes option pricing model to estimate the fair value of options. This model requires the input of highly subjective assumptions including the expected volatility, risk-free interest rate, and the expected life of options. The Company used the following assumptions:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014			2013	2014			2013
	Dividend yield		—		—		—		—
	Expected volatility		51.3	%	53.80%		51.3	%	53.8%-55.8%
	Risk-free interest rate		1.88	%	1.69%-2.01%		1.92	%	1.37%-2.47%
	Expected life of options (in years)		6.25		6.25		6.26		6.25
	Forfeiture rate		7	%	7.00%		7	%	7.00%
	As the Company has limited historical option exercise data, the expected term of the stock options granted to employees was calculated based on the simplified method. Under the simplified method, the expected term is equal to the average of an option’s weighted-average vesting period and its contractual term. Pursuant to the SEC Staff Accounting Bulletin (“SAB”) No. 110, the Company is permitted to continue using the simplified method until sufficient information regarding exercise behavior, such as historical exercise data or exercise information from external sources, becomes available. The Company estimates the expected volatility of its common stock on the date of grant based on the historical stock volatilities of similar publicly-traded entities over a period equal to the expected terms of the options, as the Company does not have sufficient trading history to use the volatility of its own common stock. The Company has no history or expectation of paying cash dividends on its common stock. The risk-free interest rate is based on the U.S. Treasury yield for a term consistent with the expected life of the options in effect at the time of grant.
	Cash proceeds from the exercise of stock options were $1,977 and $1,193 for the nine months ended September 30, 2014 and 2013, respectively.
	Compensation expense is recognized ratably over the requisite service period. As of September 30, 2014, there was $16,463 of unrecognized compensation cost related to options, which is expected to be recognized over a weighted-average period of 3.0 years.
	Given the lack of a public market for the Company’s outstanding common and preferred stock through March 27, 2013, the Company’s Board of Directors established an estimate of fair value for these securities as well as for options and warrants to purchase these securities. The fair value of the Company’s common stock as used in the determination of the exercise price of stock options was estimated by the Company’s Board of Directors based on factors such as the liquidation preference, dividends and other rights of the outstanding preferred stock; recent financial and operating performance; the status of the Company’s development and sales efforts, revenue growth and additional objectives; the likelihood and proximity of an initial public offering; and the valuation of comparable companies that are publicly traded. Subsequent to the closing of the Company’s initial public offering, the Company has used the closing price of the Company’s common stock on the date of the stock option grant as the fair value of the Company’s common stock and the exercise price of the stock options.
	Restricted Stock and RSUs
	As of September 30, 2014, there was $7,536 of unrecognized compensation cost related to restricted stock and RSUs, which is expected to be recognized over a weighted-average period of 1.9 years. The Company uses the fair market value of the underlying common stock on the dates of grant to determine the fair value of restricted stock and RSUs. Stock-based compensation expense related to these awards are recognized on a straight-line basis over the service period of the award for the estimated number of shares that are ultimately expected to vest.
	Employee Stock Purchase Plan
	The Company estimates the fair value of purchase rights under the ESPP using the Black-Scholes valuation model. The fair value of each purchase right under the ESPP was estimated on the date of grant using the Black-Scholes option valuation model and the straight-line attribution approach with assumptions substantially similar to those used for the valuation of our stock option awards.

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	10. Income Taxes
	The Company’s quarterly provision for income taxes is based on an estimated effective annual income tax rate. The Company’s quarterly provision for income taxes also includes the tax impact of certain unusual or infrequently occurring items, if any, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, in the interim period in which they occur.
	The income tax expense for the three months ended September 30, 2014 was $259 on a pre-tax loss of $8,985 and the income tax benefit for the nine months ended September 30, 2014 was $1,992 on a pre-tax loss of $26,333. Income tax expense for the three months ended September 30, 2013 was $230 on a pre-tax loss of $7,963 and for the nine months ended September 30, 2013 was $485 on a pre-tax loss of $27,306. The benefit recorded for the nine months ended September 30, 2014 was primarily attributable to a decrease in our valuation allowances of $2,603 due to deferred tax liabilities recorded as part of our acquisition of Perfect Audience. As of September 30, 2014, the income tax rate varies from the United States statutory income tax rate primarily due to valuation allowances in the United States and taxable income generated by the Company’s foreign wholly-owned subsidiaries.
	The Company reviews the likelihood that it will realize the benefit of its deferred tax assets and, therefore, the need for valuation allowances on a quarterly basis. There is no corresponding income tax benefit recognized with respect to losses incurred and no corresponding income tax expense recognized with respect to earnings generated in jurisdictions with a valuation allowance. This causes variability in the Company’s effective tax rate. The Company will maintain the valuation allowances until it is more likely than not that the net deferred tax assets will be realized.
	As of September 30, 2014, the Company’s gross uncertain tax benefits totaled $1,088. As of September 30, 2014, none of the Company’s uncertain tax benefits, including related accrued interest and penalties, would affect the Company’s effective tax rate if recognized.

Net_Loss_Per_Share_Available_t

Net Loss Per Share Available to Common Stockholders	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Net Loss Per Share Available to Common Stockholders	'
	11. Net Loss Per Share Available to Common Stockholders
	Basic net loss per share available to common stockholders is calculated by dividing the net loss available to common stockholders by the weighted-average number of shares of common stock outstanding for the period. Net loss available to common stockholders is calculated using the two class method as net loss less the preferred stock dividend for the period less the amount of net loss, if any, allocated to the preferred stock based on weighted preferred stock outstanding during the period relative to total stock outstanding during the period. As the Company’s preferred stockholders did not have the contractual obligations to share in the losses of the Company, no loss was allocated to the convertible preferred stockholders in the determination of net loss available to common stockholders. The weighted-average number of shares of common stock used to calculate the Company’s basic net loss per share available to common stockholders excludes those shares subject to repurchase related to unvested common shares, stock options that were exercised prior to vesting, restricted stock issued and RSUs settled for shares of common stock as these shares are not deemed to be outstanding for accounting purposes until they vest. The diluted net loss per share of common stock is computed by dividing the net loss using the weighted-average number of shares of common stock, excluding common stock subject to repurchase, and, if dilutive, potential shares of common stock outstanding during the period. Potential shares of common stock consist of common stock subject to repurchase, stock options to purchase common stock, restricted common stock issued, RSUs settled for shares of common stock, warrants to purchase convertible preferred stock (using the treasury stock method) and the conversion of the Company’s convertible preferred stock (using the “if converted” method). The following table presents the calculation of basic and diluted net loss per share:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Numerator:
	Net loss	$	(9,244	)	$	(8,193	)	$	(24,341	)	$	(27,791	)
	Denominator:
	Weighted average number of shares, basic and diluted		34,849			32,522			34,018			24,136
	Net loss per share available to common stockholders
	Basic and diluted net loss per common share available to common stockholders	$	(0.27	)	$	(0.25	)	$	(0.72	)	$	(1.15	)
	The following table presents the potential shares of common stock outstanding that were excluded from the computation of diluted net loss per share available to common stockholders for the periods presented because including them would have been anti-dilutive:
		Three and Nine Months Ended September 30,
		2014			2013
	Options to purchase common stock		6,204			4,990
	Restricted stock units		355			—
	Restricted common stock		606			—
	Common stock subject to repurchase		103			214
			7,268			5,204

Segment_Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Reporting	'
	12. Segment Reporting
	The Company defines the term “chief operating decision maker” to be the Chief Executive Officer. The Chief Executive Officer reviews the financial information presented on a consolidated basis for purposes of allocating resources and evaluation of financial performance. Accordingly, the Company has determined that it operates as a single reportable and operating segment.
	Revenues by geographic area, based on the billing location of the customer, were as follows:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
	United States of America	$	16,839	$	13,396	$	47,519	$	38,019
	International		8,845		6,717		24,834		17,467
	Total revenues, net	$	25,684	$	20,113	$	72,353	$	55,486
	Long-lived assets by geographic area were as follows:
		September 30,		December 31,
		2014		2013
	United States of America	$	13,203	$	14,050
	International		614		367
	Total long-lived assets, net	$	13,817	$	14,417

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	13. Commitments and Contingencies
	Operating Leases
	Rent expense for the three months ended September 30, 2014 and 2013 was $1,856 and $1,752, respectively, and for the nine months ended September 30, 2014 and 2013 was $5,645 and $5,016, respectively.
	Future minimum lease payments for significant operating leases as of September 30, 2014 were as follows:
	Periods Ending December 31,
	2014	$	1,679
	2015		4,500
	2016		3,814
	2017		3,444
	2018 and thereafter		751
		$	14,188
	Legal Matters
	From time to time, the Company may be involved in lawsuits, claims, investigations and proceedings, consisting of intellectual property, commercial, employment and other matters, which arise in the ordinary course of business. In accordance with U.S. generally accepted accounting principles (“GAAP”), the Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, ruling, advice of legal counsel and other information and events pertaining to a particular case. Litigation is inherently unpredictable. If any unfavorable ruling was to occur in any specific period or if a loss becomes probable and estimable, there exists the possibility of a material adverse impact on the Company’s results of operations, financial position or cash flows.
	Indemnification
	The Company enters into standard indemnification agreements in the ordinary course of business. Pursuant to the agreements, each party may indemnify, defend and hold the other party harmless with respect to such claim, suit or proceeding brought against it by a third party alleging that the indemnifying party’s intellectual property infringes upon the intellectual property of the third party, or results from a breach of the indemnifying party’s representations and warranties or covenants, or that results from any acts of negligence or willful misconduct. The term of these indemnification agreements is generally perpetual any time after execution of the agreement. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited. Historically, the Company has not been obligated to make significant payments for these obligations and no liabilities have been recorded for these obligations on the consolidated balance sheets as of September 30, 2014 and December 31, 2013.
	The Company also indemnifies its officers and directors for certain events or occurrences, subject to certain limits, while the officer or director is or was serving at the Company’s request in such capacity. The maximum amount of potential future indemnification is unlimited; however, the Company has a Directors and Officers insurance policy that limits its exposure and enables the Company to recover a portion of any future amounts paid. Historically, the Company has not been obligated to make any payments for these obligations and no liabilities have been recorded for these obligations on the consolidated balance sheets as of September 30, 2014 and December 31, 2013.
	Other Contingencies
	The Company is subject to claims and assessments from time to time in the ordinary course of business. The Company’s management does not believe that any such matters, individually or in the aggregate, will have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Summary_of_Business_and_Signif1

Summary of Business and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2014
Business Combinations [Abstract]	'
Basis of Presentation and Consolidation	'
	Basis of Presentation and Consolidation
	The accompanying unaudited condensed consolidated financial statements and condensed footnotes have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments, consisting of only normal recurring items, considered necessary for fair statement have been included. The results of operations for the three and nine months ended September 30, 2014 are not necessarily indicative of the results to be expected for the year ended December 31, 2014 or for other interim periods or for future years.
	The accompanying unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated on consolidation. The condensed consolidated balance sheet as of December 31, 2013 is derived from audited financial statements as of that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2013 filed with the Securities and Exchange Commission (“SEC”) on February 28, 2014.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-15, Disclosures of Uncertainties About an Entity’s Ability to Continue as a Going Concern. The new standard provides guidance around management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The new standard is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. Early adoption is permitted. The Company does not expect that this guidance will have a material impact on its consolidated results of operations or financial condition.
	In June 2014, the FASB issued ASU 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could Be Achieved after the Requisite Service Period. The guidance requires that a performance target that affects vesting and could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance as it relates to such awards. This guidance is effective for us in our first quarter of fiscal year ending December 31, 2017. We are currently evaluating the impact of our pending adoption of this ASU on the Company’s consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides guidance for revenue recognition. The standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies will need to use more judgment and make more estimates when compared with the current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. This guidance will be effective for the Company in the first quarter of its fiscal year ending December 31, 2017. The Company is currently in the process of evaluating the impact of pending adoption of this ASU on the Company’s consolidated financial statements.
	In July 2013, the FASB issued a new accounting standard update on the financial statement presentation of unrecognized tax benefits. The new guidance provides that a liability related to an unrecognized tax benefit would be presented as a reduction of a deferred tax asset for a net operating loss carryforward, a similar tax loss or a tax credit carryforward if such settlement is required or expected in the event the uncertain tax position is disallowed. The Company adopted the standard update in the first quarter of 2014, and its adoption had no impact on the Company’s consolidated results of operations or financial condition.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	The Company considers all highly liquid investments with an original or remaining maturity from the Company’s date of purchase of 90 days or less to be cash equivalents. Deposits held with financial institutions are likely to exceed the amount of insurance on these deposits. Cash equivalents consist of money market funds, which are readily convertible into cash and are stated at cost, which approximates fair market value. Cash equivalents were $69,017 and $98,987 as of September 30, 2014 and December 31, 2013, respectively.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	The Company’s financial instruments, including cash equivalents, accounts receivable and accounts payable are carried at cost, which approximates fair value because of the short-term nature of those instruments. Based on borrowing rates available to the Company for loans with similar terms and maturities, the carrying value of borrowings approximates fair value (Level 2 within the fair value hierarchy).
	The Company measures and reports certain financial assets at fair value on a recurring basis, including its investments in money market funds. The fair value hierarchy prioritizes the inputs into three broad levels:
	Level 1		Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.
	Level 2		Inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument.
	Level 3		Inputs are unobservable inputs based on the Company’s assumptions.
	A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
	The Company’s cash equivalents as of September 30, 2014 and December 31, 2013 consisted of money market funds with original maturity dates of less than three months from the date of their respective purchase. Cash equivalents are classified as Level 1. The fair value of the Company’s money market funds approximated amortized cost and, as such, there were no unrealized gains or losses on money market funds as of September 30, 2014 and December 31, 2013.
Allowance for Doubtful Accounts and Revenue Credits	'
	Allowance for Doubtful Accounts and Revenue Credits
	The allowance for doubtful accounts reflects the Company’s best estimate of probable losses inherent in the Company’s receivables portfolio determined on the basis of historical experience, specific allowances for known troubled accounts and other currently available evidence. The Company has not experienced significant credit losses from its accounts receivable. The Company performs a regular review of its customers’ payment histories and associated credit risks and it does not require collateral from its customers. Certain contracts with advertising agencies contain sequential liability provisions, whereby the agency does not have an obligation to pay the Company until payment is received from the agency’s customers. In these circumstances, the Company evaluates the credit worthiness of the agency’s customers, in addition to the agency itself.
	From time to time the Company provides revenue credits to customers and an allowance is made based on historical credit activity. As of September 30, 2014 and December 31, 2013, the Company recorded an allowance for potential customer credits in the amount of $599 and $349, respectively.
Property and Equipment	'
	Property and Equipment
	Property and equipment are stated at historical cost less accumulated depreciation and amortization. Depreciation and amortization are computed using the straight-line method over the estimated useful lives of the related assets.
	Upon retirement or sale, the cost and related accumulated depreciation are removed from the balance sheet and the resulting gain or loss is reflected in operations. Major additions and improvements are capitalized while repairs and maintenance that do not extend the life of the asset are charged to operations as incurred. Depreciation and amortization expense is allocated to both cost of revenues and operating expenses.
Internally Developed Software	'
	Internally Developed Software
	Costs incurred in the development phase are capitalized and amortized over the product’s estimated useful life, which is three years. The Company expenses all costs incurred that relate to planning and post implementation phases of development. Capitalized costs related to internally developed software under development are treated as construction in progress until the program, feature or functionality is ready for its intended use, at which time amortization commences. The Company capitalized internally developed software costs of $1,035 and $1,018 during the three months ended September 30, 2014 and 2013, respectively, and $2,381 and $2,566 during the nine months ended September 30, 2014 and 2013, respectively. Amortization of capitalized costs related to internally developed software for the three months ended September 30, 2014 and 2013 was $480 and $303, respectively, and for the nine months ended September 30, 2014 and 2013 was $1,390 and $786, respectively. As of September 30, 2014 and December 31, 2013, unamortized internally developed software costs totaled $5,226 and $4,236, respectively. Amortization of internally developed software is reflected in cost of revenues. Costs associated with minor enhancement and maintenance are expensed as incurred.
Goodwill, Intangible Assets and Impairment Assessments	'
	Goodwill, Intangible Assets and Impairment Assessments
	Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Intangible assets that are not considered to have an indefinite useful life are amortized over their useful lives, which generally range from two to six years. Estimated remaining useful lives of purchased intangible assets are evaluated to assess whether events or changes in circumstances warrant a revision to the remaining periods of amortization. The carrying amounts of these assets will be periodically reviewed for impairment (at least annually for goodwill and indefinite lived intangible assets) and whenever events or changes in circumstances indicate that the carrying value of these assets may not be recoverable.
Revenue Recognition	'
	Revenue Recognition
	The Company generates revenues principally from subscriptions either directly with advertisers or with advertising agencies to its platform for the management of search, display and social advertising. The Company’s subscription agreements are generally one year or longer in length. The Company’s subscription fee under most contracts is variable based on the value of the advertising spend that the Company’s advertisers manage through the Company’s platform and is generally invoiced on a monthly basis. Contracts with direct advertisers and certain contracts with advertising agencies also include a minimum monthly fee that is payable over the duration of the contract. The Company’s customers do not have the right to take possession of the software supporting the application service at any time, nor do the arrangements contain general rights of return. The Company commences revenue recognition for both direct advertisers and advertising agencies when all of the following conditions are met:
		•		persuasive evidence of an arrangement exists;
		•		the Company’s platform is made available to the customer;
		•		the fee is fixed or determinable, and;
		•		collection is reasonably assured.
	The Company recognizes the total minimum fee for both direct advertisers and advertising agencies, where applicable, over the duration of the contract, commencing on the date that the Company’s platform is made available to the customer, provided revenues recognized do not exceed amounts that are invoiced and due. The variable fee, which is based on a percentage of the value of the advertising spend managed through the Company’s platform, is recognized once the amount is fixed or determinable, which is generally on a monthly basis concurrent with the issuance of the customer invoice. Signed contracts are used as evidence of an arrangement. The Company assesses collectability based on a number of factors such as past collection history with the customer and creditworthiness of the customer. Certain agreements with advertising agencies also contain sequential liability provisions, which provide that the agency has no obligation to pay the Company until the agency receives payment from its customers. In these circumstances, the Company evaluates the credit worthiness of the agency’s customers, in addition to the agency itself, to conclude whether or not collectability is reasonably assured. If the Company determines collectability is not reasonably assured, the Company defers the revenue recognition until collectability becomes reasonably assured.
Cost of Revenues	'
	Cost of Revenues
	Cost of revenues primarily consists of costs related to hosting the Company’s cloud-based platform, providing implementation and ongoing customer support, data communications expenses, salaries and benefits of operations and support personnel, software license fees, costs associated with website development activities, allocated overhead, amortization expense associated with capitalized internal use software and intangible assets and property and equipment depreciation.
Stock-Based Compensation	'
	Stock-Based Compensation
	Stock-based compensation is measured at grant date based on the fair value of the award and is expensed on a straight-line basis over the requisite service period.
	Fair values of stock option awards are determined on the date of grant using an option-pricing model. The Company has selected the Black-Scholes option pricing model to estimate the fair value of its stock option awards to employees and non-employees. In applying the Black-Scholes option pricing model, the Company’s determination of the fair value of the stock option award on the date of grant is affected by the Company’s fair value of its common stock, as well as assumptions regarding a number of subjective variables. These variables include, but are not limited to, the Company’s expected stock price volatility and the optionholders’ actual and projected stock option exercise and employment termination behaviors.
	Restricted stock units (“RSUs”) are measured based on the fair market values of the underlying common stock on the dates of grant. Shares of common stock are issued on the vesting dates. For awards with graded vesting, the Company recognizes stock-based compensation expense over the requisite service period using the straight-line method, based on awards ultimately expected to vest. The Company estimates future forfeitures at the date of grant and revises the estimates, if necessary, in subsequent periods if actual forfeitures differ from those estimates.
	Stock options issued to non-employees such as consultants are recorded at their fair value on the measurement date. The measurement of stock-based compensation is subject to periodic adjustment as the underlying equity instruments vest. The fair value of options granted to consultants is expensed when vested. Non-employee stock-based compensation expense was not material for all periods presented.
	See Note 9 for further information.
Business Combinations	'
	The acquisition was accounted for under the acquisition method of accounting in which the tangible and identifiable intangible assets and liabilities of Perfect Audience were recorded at their respective fair values as of the acquisition date, including an amount for goodwill representing the difference between the respective acquisition consideration and fair values of identifiable net assets. The fair value of assets acquired and liabilities assumed was recorded based on a preliminary valuation and the Company’s estimates and assumptions are subject to change within the measurement period. The primary areas of the purchase price allocation that are not yet finalized are related to the fair values of intangible assets acquired and residual goodwill.
Income Taxes	'
	The Company’s quarterly provision for income taxes is based on an estimated effective annual income tax rate. The Company’s quarterly provision for income taxes also includes the tax impact of certain unusual or infrequently occurring items, if any, including changes in judgment about valuation allowances and effects of changes in tax laws or rates, in the interim period in which they occur.
	The Company reviews the likelihood that it will realize the benefit of its deferred tax assets and, therefore, the need for valuation allowances on a quarterly basis. There is no corresponding income tax benefit recognized with respect to losses incurred and no corresponding income tax expense recognized with respect to earnings generated in jurisdictions with a valuation allowance. This causes variability in the Company’s effective tax rate. The Company will maintain the valuation allowances until it is more likely than not that the net deferred tax assets will be realized.
Net Loss Per Share Available to Common Stockholders	'
	Basic net loss per share available to common stockholders is calculated by dividing the net loss available to common stockholders by the weighted-average number of shares of common stock outstanding for the period. Net loss available to common stockholders is calculated using the two class method as net loss less the preferred stock dividend for the period less the amount of net loss, if any, allocated to the preferred stock based on weighted preferred stock outstanding during the period relative to total stock outstanding during the period. As the Company’s preferred stockholders did not have the contractual obligations to share in the losses of the Company, no loss was allocated to the convertible preferred stockholders in the determination of net loss available to common stockholders. The weighted-average number of shares of common stock used to calculate the Company’s basic net loss per share available to common stockholders excludes those shares subject to repurchase related to unvested common shares, stock options that were exercised prior to vesting, restricted stock issued and RSUs settled for shares of common stock as these shares are not deemed to be outstanding for accounting purposes until they vest. The diluted net loss per share of common stock is computed by dividing the net loss using the weighted-average number of shares of common stock, excluding common stock subject to repurchase, and, if dilutive, potential shares of common stock outstanding during the period. Potential shares of common stock consist of common stock subject to repurchase, stock options to purchase common stock, restricted common stock issued, RSUs settled for shares of common stock, warrants to purchase convertible preferred stock (using the treasury stock method) and the conversion of the Company’s convertible preferred stock (using the “if converted” method).
Segment Reporting	'
	The Company defines the term “chief operating decision maker” to be the Chief Executive Officer. The Chief Executive Officer reviews the financial information presented on a consolidated basis for purposes of allocating resources and evaluation of financial performance. Accordingly, the Company has determined that it operates as a single reportable and operating segment.
Commitments and Contingencies	'
	From time to time, the Company may be involved in lawsuits, claims, investigations and proceedings, consisting of intellectual property, commercial, employment and other matters, which arise in the ordinary course of business. In accordance with U.S. generally accepted accounting principles (“GAAP”), the Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impact of negotiations, settlements, ruling, advice of legal counsel and other information and events pertaining to a particular case. Litigation is inherently unpredictable. If any unfavorable ruling was to occur in any specific period or if a loss becomes probable and estimable, there exists the possibility of a material adverse impact on the Company’s results of operations, financial position or cash flows.

Summary_of_Business_and_Signif2

Summary of Business and Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Changes in Preferred Stock Warrant Obligation Measured and Recorded at Fair Value on Recurring Basis	'
	The following table presents the changes in the preferred stock warrant obligation measured and recorded at fair value on a recurring basis, using significant unobservable inputs (Level 3) during the nine months ended September 30, 2013. There were no changes in the preferred stock warrant obligation during the nine months ended September 30, 2014, as the underlying warrants were no longer outstanding subsequent to the Company’s initial public offering.
		Nine Months Ended
		September 30, 2013
	Balances at beginning of period	$	507
	Change in estimated fair value of warrant		238
	Conversion to common stock warrant		(745	)
	Balances at end of period	$	—
Schedule of Useful Lives of Property and Equipment	'
	The useful lives of the property and equipment are as follows:
	Computer equipment	3 to 5 years
	Office equipment, furniture and fixtures	3 to 5 years
	Software	3 years
	Leasehold improvements	Shorter of useful life or lease term

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Components of Property and Equipment	'
	The following table shows the components of property and equipment as of the dates presented:
		September 30,			December 31,
		2014			2013
	Computer equipment	$	18,041		$	16,314
	Software		10,097			7,690
	Office equipment		722			571
	Furniture, fixtures and leasehold improvements		1,979			1,861
			30,839			26,436
	Less: Accumulated depreciation and amortization		(17,022	)		(12,019	)
		$	13,817		$	14,417
Components of Accrued Expenses and Other Current Liabilities	'
	The following table shows the components of accrued expenses and other current liabilities as of the dates presented:
		September 30,			December 31,
		2014			2013
	Accrued salary and payroll related expenses	$	6,647		$	6,675
	Accrued accounts payable		3,982			2,773
	Customer advances		1,249			—
	Income tax payable		604			434
	Sales and use tax payable		262			466
	Other		391			602
		$	13,135		$	10,950

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Intangible Assets, Excluding Goodwill	'
	Intangible assets, excluding goodwill, consisted of the following:
		September 30,			Estimated
		2014			Useful Life
	Developed technology	$	6,110		6 years
	Customer relationships		1,290		4 years
	Non-compete agreements and tradename		1,130		2 - 3 years
			8,530
	Less: accumulated amortization		(646	)
		$	7,884
Schedule of Future Estimated Amortization Costs of Intangible Assets	'
	Future estimated amortization of intangible assets as of September 30, 2014 is presented below:
	Remaining three months of 2014	$	485
	Year ending December 31, 2015		1,938
	Year ending December 31, 2016		1,714
	Year ending December 31, 2017		1,483
	Year ending December 31, 2018 and thereafter		2,264
		$	7,884

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Maturities of All Outstanding Debt Including Capital Lease Arrangement	'
	The maturities of all outstanding debt, including the capital lease arrangement, as of September 30, 2014 are as follows:
	Years Ending
	2014	$	863
	2015		2,464
	2016		652
			3,979
	Less:
	Current portion		(2,787	)
	Discount on long-term debt		(41	)
	Noncurrent portion of debt	$	1,151

Common_Stock_Tables

Common Stock (Tables)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Reserved Shares of Common Stock	'
	Reserved shares of common stock are as follows:
		September 30,		December 31,
		2014		2013
	Options available for future grant		3,869		4,585
	Options outstanding		6,204		4,855
	RSUs outstanding		355		—
	Shares available for future issuance under ESPP		1,094		854
			11,522		10,294

Equity_Award_Plans_Tables

Equity Award Plans (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Summary of Stock Option Activity under the 2006 Plan and 2013 Plan	'
	A summary of stock option activity under the 2006 Plan and 2013 Plan is as follows:
		Options Outstanding
		Number of			Weighted		Weighted		Aggregate
		Shares			Average		Average		Intrinsic
					Exercise		Remaining		Value
					Price Per Share		Contractual
							Term
							(in Years)
	Balances at December 31, 2013		4,855		$	6.56		7.85	$	20,593
	Options granted		2,843			9.61		9.64
	Options exercised		(662	)		2.98		—
	Options forfeited and cancelled		(832	)		9.34		—
	Balances at September 30, 2014		6,204		$	7.96		8.09	$	10,730
	Options exercisable as of September 30, 2014		3,112		$	6.12		6.69	$	10,509
	Options vested as of September 30, 2014		2,304		$	5.09		6.27	$	9,564
	Options vested and expected to vest of September 30, 2014		5,812		$	7.84		8.01	$	10,671
Summary of RSUs Granted and Unvested under the 2013 Plan	'
	A summary of RSUs granted and unvested under the 2013 Plan as of September 30, 2014 is as follows:
		RSUs Outstanding
		Number of			Weighted Average
		RSUs			Fair Value
					Per Unit
	Granted and unvested at December 31, 2013		—		$	—
	RSUs granted		363			10.36
	RSUs vested		—			—
	RSUs forfeited		(8	)		10.56
	Granted and unvested at September 30, 2014		355		$	10.35

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Assumptions Used to Estimate Fair Value of Options	'
	The Company used the following assumptions:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014			2013	2014			2013
	Dividend yield		—		—		—		—
	Expected volatility		51.3	%	53.80%		51.3	%	53.8%-55.8%
	Risk-free interest rate		1.88	%	1.69%-2.01%		1.92	%	1.37%-2.47%
	Expected life of options (in years)		6.25		6.25		6.26		6.25
	Forfeiture rate		7	%	7.00%		7	%	7.00%

Net_Loss_Per_Share_Available_t1

Net Loss Per Share Available to Common Stockholders (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Calculation of Basic and Diluted Net Loss Per Share	'
	The following table presents the calculation of basic and diluted net loss per share:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2014			2013			2014			2013
	Numerator:
	Net loss	$	(9,244	)	$	(8,193	)	$	(24,341	)	$	(27,791	)
	Denominator:
	Weighted average number of shares, basic and diluted		34,849			32,522			34,018			24,136
	Net loss per share available to common stockholders
	Basic and diluted net loss per common share available to common stockholders	$	(0.27	)	$	(0.25	)	$	(0.72	)	$	(1.15	)
Potential Common Shares Outstanding	'
	The following table presents the potential shares of common stock outstanding that were excluded from the computation of diluted net loss per share available to common stockholders for the periods presented because including them would have been anti-dilutive:
		Three and Nine Months Ended September 30,
		2014			2013
	Options to purchase common stock		6,204			4,990
	Restricted stock units		355			—
	Restricted common stock		606			—
	Common stock subject to repurchase		103			214
			7,268			5,204

Segment_Reporting_Tables

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Revenues by Geographic Area, Based on Billing Location of Customer	'
	Revenues by geographic area, based on the billing location of the customer, were as follows:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
	United States of America	$	16,839	$	13,396	$	47,519	$	38,019
	International		8,845		6,717		24,834		17,467
	Total revenues, net	$	25,684	$	20,113	$	72,353	$	55,486
	Long-lived assets by geographic area were as follows:
		September 30,		December 31,
		2014		2013
	United States of America	$	13,203	$	14,050
	International		614		367
	Total long-lived assets, net	$	13,817	$	14,417

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Annual Future Minimum Payments under Operating Leases	'
	Future minimum lease payments for significant operating leases as of September 30, 2014 were as follows:
	Periods Ending December 31,
	2014	$	1,679
	2015		4,500
	2016		3,814
	2017		3,444
	2018 and thereafter		751
		$	14,188

Summary_of_Business_and_Signif3

Summary of Business and Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Incorporation date	'	'	31-Mar-06	'	'
Cash equivalents	$69,017	'	$69,017	'	$98,987
Cash equivalent consist of money market with maturity dates	'	'	'3 months	'	'3 months
Unrealized gains or losses on money market funds	'	'	0	'	0
Preferred stock warrant obligation	'	'	0	'	'
Outstanding warrants	0	'	0	'	'
Allowance for potential customer credits	599	'	599	'	349
Capitalization of internally developed software costs	1,035	1,018	2,381	2,566	'
Amortization of capitalized costs related to internally developed software	480	303	1,390	786	'
Unamortized internally developed software costs	$5,226	'	$5,226	'	$4,236
Software [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Estimated useful life of internally developed software	'	'	'3 years	'	'
Minimum [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Intangible assets amortized useful lives	'	'	'2 years	'	'
Minimum [Member] | Subscription Arrangement [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Length of subscription agreements	'	'	'1 year	'	'
Maximum [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Intangible assets amortized useful lives	'	'	'6 years	'	'

Summary_of_Business_and_Signif4

Summary of Business and Significant Accounting Policies - Changes in Preferred Stock Warrant Obligation Measured and Recorded at Fair Value on Recurring Basis (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Conversion to common stock warrant	$0	($745)
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Balances at beginning of period	'	507
Change in estimated fair value of warrant	'	238
Conversion to common stock warrant	'	-745
Balances at end of period	'	$0

Summary_of_Business_and_Signif5

Summary of Business and Significant Accounting Policies - Schedule of Useful Lives of Property and Equipment (Detail)	9 Months Ended
	Sep. 30, 2014
Computer Equipment [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful lives of property and equipment	'5 years
Computer Equipment [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful lives of property and equipment	'3 years
Office Equipment, Furniture and Fixtures [Member] | Maximum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful lives of property and equipment	'5 years
Office Equipment, Furniture and Fixtures [Member] | Minimum [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful lives of property and equipment	'3 years
Software [Member]	'
Property, Plant and Equipment [Line Items]	'
Useful lives of property and equipment	'3 years
Leasehold Improvements [Member]	'
Property, Plant and Equipment [Line Items]	'
Leasehold improvements	'Shorter of useful life or lease term

Business_Combinations_Addition

Business Combinations - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Business Acquisition [Line Items]	'
Purchase price attributable to goodwill	$11,681
NowSpots, Inc. [Member]	'
Business Acquisition [Line Items]	'
Acquisition date	2-Jun-14
Business acquisition, purchase price	16,470
Common stock value at the date of acquisition	5,275
Number of common stock, shares at the date of acquisition	1,119
Cash acquired from acquisition	1,124
Purchase price attributable to intangible assets	8,530
Purchase price attributable to goodwill	11,681
Purchase price of net liabilities assumed	4,865
Additional shares of common stock issued in connection with acquisition	630
Common stock issued in connection with acquisition closing date fair value	$6,301

Balance_Sheet_Components_Compo

Balance Sheet Components - Components of Property and Equipment (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$30,839	$26,436
Less: Accumulated depreciation and amortization	-17,022	-12,019
Property and equipment, net	13,817	14,417	[1]
Computer Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	18,041	16,314
Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	10,097	7,690
Office Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	722	571
Furniture, Fixtures and Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$1,979	$1,861
[1]	Derived from our audited consolidated financial statements as of December 31, 2013.

Balance_Sheet_Components_Addit

Balance Sheet Components - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Quarterly Financial Information Disclosure [Abstract]	'	'
Depreciation and amortization of internally developed software	$5,535	$4,214

Balance_Sheet_Components_Compo1

Balance Sheet Components - Components of Accrued Expenses and Other Current Liabilities (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Quarterly Financial Information Disclosure [Abstract]	'	'
Accrued salary and payroll related expenses	$6,647	$6,675
Accrued accounts payable	3,982	2,773
Customer advances	1,249	0
Income tax payable	604	434
Sales and use tax payable	262	466
Other	391	602
Accrued expenses and other current liabilities	$13,135	$10,950	[1]
[1]	Derived from our audited consolidated financial statements as of December 31, 2013.

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Goodwill in result of business acquisition	$11,681	'	$11,681	'
Amortization expense of intangible assets	485	0	646	0
NowSpots, Inc. [Member]	'	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'	'
Goodwill in result of business acquisition	$11,681	'	$11,681	'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Schedule of Intangible Assets, Excluding Goodwill (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, gross	8,530
Less: accumulated amortization	-646
Intangible assets, net	7,884
Maximum [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, estimated useful life	'6 years
Minimum [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, estimated useful life	'2 years
Developed technology [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, estimated useful life	'6 years
Intangible assets, gross	6,110
Customer relationships [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, estimated useful life	'4 years
Intangible assets, gross	1,290
Non-compete agreements and tradename [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, gross	1,130
Non-compete agreements and tradename [Member] | Maximum [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, estimated useful life	'3 years
Non-compete agreements and tradename [Member] | Minimum [Member]	'
Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, estimated useful life	'2 years

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets - Schedule of Future Estimated Amortization Costs of Intangible Assets (Detail) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'
Remaining three months of 2014	$485
Year ending December 31, 2015	1,938
Year ending December 31, 2016	1,714
Year ending December 31, 2017	1,483
Year ending December 31, 2018 and thereafter	2,264
Intangible assets, net	$7,884

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Feb. 28, 2013	Sep. 30, 2013	Sep. 30, 2014
In Thousands, unless otherwise specified	Computer Equipment [Member]	Computer Equipment [Member]	Computer Equipment [Member]	Revolving Credit Facility [Member]	Revolving Credit Facility [Member]
			Installment
Line of Credit Facility [Line Items]	'	'	'	'	'
Effective interest rate	'	'	6.00%	'	'
Number of monthly installments	'	'	36	'	'
Net book value of equipment under capital lease	$1,703	$2,495	'	'	'
Remaining principal balance payable	1,806	2,598	'	'	'
Increase in the revolving credit facility	'	'	'	15,000	'
Percentage of eligible accounts receivable	'	'	'	80.00%	'
Revolving credit facility, the expiration date	'	'	'	31-Jul-15	'
Revolving credit facility, amended annual interest rate	'	'	'	0.25%	'
Unrestricted cash balance exceeds	'	'	'	$50,000	'
Revolving credit facility, Description	'	'	'	'	'In September 2013, the Company entered into an amendment to its existing revolving credit facility pursuant to which Silicon Valley Bank agreed to increase the revolving credit facility to the lesser of $15,000 or 80% of the Company's eligible accounts receivable.

Debt_Maturities_of_All_Outstan

Debt - Maturities of All Outstanding Debt (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2014	$863	'
2015	2,464	'
2016	652	'
Total	3,979	'
Total	3,979	'
Less:	'	'
Current portion	-2,787	-3,253	[1]
Discount on long-term debt	-41	'
Noncurrent portion of debt	$1,151	$2,962	[1]
[1]	Derived from our audited consolidated financial statements as of December 31, 2013.

Convertible_Preferred_Stock_Ad

Convertible Preferred Stock - Additional Information (Detail) (Preferred Stock [Member])	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Preferred Stock [Member]	'
Class of Stock [Line Items]	'
Preferred stock conversion rate	'All of the outstanding shares of preferred stock converted into common stock at the conversion rate of 1:1.
Preferred stock conversion ratio	1
Outstanding preferred stock converted into fully paid shares of common stock	18,753
Initial public offering closing date	27-Mar-13

Common_Stock_Additional_Inform

Common Stock - Additional Information (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Equity [Abstract]	'	'
Common stock, shares authorized	500,000	500,000
Common stock, par value	$0.00	$0.00

Common_Stock_Reserved_Shares_o

Common Stock - Reserved Shares of Common Stock (Detail)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Class of Stock [Line Items]	'	'
Reserved shares of Common Stock	11,522	10,294
Shares Available for Future Issuance under ESPP [Member]	'	'
Class of Stock [Line Items]	'	'
Reserved shares of Common Stock	1,094	854
Restricted Stock Units [Member]	'	'
Class of Stock [Line Items]	'	'
Reserved shares of Common Stock	355	0
Options Outstanding [Member]	'	'
Class of Stock [Line Items]	'	'
Reserved shares of Common Stock	6,204	4,855
Options Available for Future Grant [Member]	'	'
Class of Stock [Line Items]	'	'
Reserved shares of Common Stock	3,869	4,585

Equity_Award_Plans_Additional_

Equity Award Plans - Additional Information (Detail) (USD $)

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Jan. 02, 2014

Sep. 30, 2014

Feb. 28, 2013

Jan. 02, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Feb. 28, 2013

In Thousands, unless otherwise specified

Employee Stock Plan 2006 Plan [Member]

Employee Stock Plan 2006 Plan [Member]

2013 Equity Incentive Plan [Member]

2013 Equity Incentive Plan [Member]

2013 Equity Incentive Plan [Member]

2013 Employee Stock Purchase Plan [Member]

2013 Employee Stock Purchase Plan [Member]

2013 Employee Stock Purchase Plan [Member]

2013 Employee Stock Purchase Plan [Member]

2013 Employee Stock Purchase Plan [Member]

2013 Employee Stock Purchase Plan [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of options granted under Plan may not exceed

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

Repurchase of common stock

'

'

103

180

'

'

'

'

'

'

'

'

'

Long-term liability

'

'

$948

$1,215

'

'

'

'

'

'

'

'

'

Common stock reserved for issuance

11,522

10,294

'

'

'

'

4,500

'

'

'

'

'

1,000

Percentage of shares outstanding under Equity Award Plan

'

'

'

'

'

5.00%

'

'

'

'

1.00%

'

'

Increase in common stock available for issuance

'

'

'

'

1,648

'

'

329

'

'

'

'

'

Percentage of fair market value of common stock of lesser

'

'

'

'

'

'

'

'

'

'

85.00%

'

'

Number of shares reserved under Employee Stock Purchase Plan

'

'

'

'

'

'

'

'

700

'

700

'

'

Shares issued under 2013 ESPP

'

'

'

'

'

'

'

'

90

0

90

0

'

Equity_Award_Plans_Summary_of_

Equity Award Plans - Summary of Stock Option Activity under the 2006 Plan and 2013 Plan (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Equity [Abstract]	'	'
Number of Shares, Options Outstanding, Balance	4,855	'
Number of Shares, Options granted	2,843	'
Number of Shares, Options exercised	-662	'
Number of Shares, Options forfeited and cancelled	-832	'
Number of Shares, Options Outstanding, Balance	6,204	4,855
Number of Shares, Options exercisable, Balance	3,112	'
Number of Shares, Options vested, Balance	2,304	'
Number of Shares, Options vested and expected to vest, Balance	5,812	'
Weighted Average Exercise Price Per Share, Options Outstanding, Balance	$6.56	'
Weighted Average Exercise Price Per Share, Options granted	$9.61	'
Weighted Average Exercise Price Per Share, Options exercised	$2.98	'
Weighted Average Exercise Price Per Share, Options forfeited and cancelled	$9.34	'
Weighted Average Exercise Price Per Share, Options Outstanding, Balance	$7.96	$6.56
Weighted Average Exercise Price Per Share, Options exercisable, Balance	$6.12	'
Weighted Average Exercise Price Per Share, Options vested, Balance	$5.09	'
Weighted Average Exercise Price Per Share, Options vested and expected to vest, Balance	$7.84	'
Weighted Average Remaining Contractual Term, Options granted (in Years)	'9 years 7 months 21 days	'
Weighted Average Remaining Contractual Term, Options Outstanding (in Years)	'8 years 1 month 2 days	'7 years 10 months 6 days
Weighted Average Remaining Contractual Term, Options exercisable (in Years)	'6 years 8 months 9 days	'
Weighted Average Remaining Contractual Term, Options vested (in Years)	'6 years 3 months 7 days	'
Weighted Average Remaining Contractual Term, Options vested and expected to vest (in Years)	'8 years 4 days	'
Aggregate Intrinsic Value, Options Outstanding, Balance	$20,593	'
Aggregate Intrinsic Value, Options Outstanding, Balance	10,730	20,593
Aggregate Intrinsic Value, Options exercisable, Balance	10,509	'
Aggregate Intrinsic Value, Outstanding, Options vested, Balance	9,564	'
Aggregate Intrinsic Value, Outstanding, Options vested and expected to vest, Balance	$10,671	'

Equity_Award_Plans_Summary_of_1

Equity Award Plans - Summary of RSUs Granted and Unvested under the 2013 Plan (Detail) (USD $)	9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014
Equity [Abstract]	'
Number of RSUs, Granted and unvested, Beginning balance	0
Number of RSUs, granted	363
Number of RSUs, vested	0
Number of RSUs, forfeited	-8
Number of RSUs, Granted and unvested, Ending balance	355
Weighted Average Fair Value Per Unit, Granted and unvested, Beginning balance	$0
Weighted Average Fair Value Per Unit, RSUs granted	$10.36
Weighted Average Fair Value Per Unit, RSUs vested	$0
Weighted Average Fair Value Per Unit, RSUs forfeited	$10.56
Weighted Average Fair Value Per Unit, Granted and unvested, Ending balance	$10.35

StockBased_Compensation_Additi

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation	'	'	$6,353	$3,952
Cash proceeds from the exercise of stock options	'	'	1,977	1,193
Unrecognized compensation cost related to options	16,463	'	16,463	'
Recognized weighted-average period	'	'	'3 years	'
Stock Options [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Stock-based compensation	2,916	1,418	6,353	3,952
Restricted Stock and RSUs [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Unrecognized compensation cost related to restricted stock and RSUs	$7,536	'	$7,536	'
Weighted-average period over which unrecognized compensation cost expected to be recognized	'	'	'1 year 10 months 24 days	'

StockBased_Compensation_Assump

Stock-Based Compensation - Assumptions Used to Estimate Fair Value of Options (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'	'	'
Dividend yield	0.00%	0.00%	0.00%	0.00%
Expected volatility	51.30%	53.80%	51.30%	'
Expected volatility, Minimum	'	'	'	53.80%
Expected volatility, Maximum	'	'	'	55.80%
Risk-free interest rate	1.88%	'	1.92%	'
Risk-free interest rate, Minimum	'	1.69%	'	1.37%
Risk-free interest rate, Maximum	'	2.01%	'	2.47%
Expected life of options (in years)	'6 years 3 months	'6 years 3 months	'6 years 3 months 4 days	'6 years 3 months
Forfeiture rate	7.00%	7.00%	7.00%	7.00%

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax expense (benefit)	$259	$230	($1,992)	$485
Pre-tax loss	8,985	7,963	26,333	27,306
Decrease in valuation allowances	'	'	2,603	'
Income tax benefit recognized with respect to losses incurred	'	'	0	'
Income tax expense with respect to earnings	0	'	0	'
Uncertain tax benefits gross	1,088	'	1,088	'
Interest and penalties related to unrecognized tax benefits	$0	'	$0	'

Net_Loss_Per_Share_Available_t2

Net Loss Per Share Available to Common Stockholders - Additional Information (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Loss allocated to convertible preferred stockholders	$0

Net_Loss_Per_Share_Available_t3

Net Loss Per Share Available to Common Stockholders - Calculation of Basic and Diluted Net Loss Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:	'	'	'	'
Net loss	($9,244)	($8,193)	($24,341)	($27,791)
Denominator:	'	'	'	'
Weighted average number of shares, basic and diluted	34,849	32,522	34,018	24,136
Net loss per share available to common stockholders	'	'	'	'
Basic and diluted net loss per common share available to common stockholders	($0.27)	($0.25)	($0.72)	($1.15)

Net_Loss_Per_Share_Available_t4

Net Loss Per Share Available to Common Stockholders - Potential Common Shares Outstanding (Detail)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potential common shares outstanding	7,268	5,204	7,268	5,204
Options to Purchase Common Stock [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potential common shares outstanding	6,204	4,990	6,204	4,990
Common Stock Subject to Repurchase [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potential common shares outstanding	103	214	103	214
Restricted Stock Units [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potential common shares outstanding	355	0	355	0
Restricted Common Stock [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Potential common shares outstanding	606	0	606	0

Segment_Reporting_Additional_I

Segment Reporting - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
	Segment
Segment Reporting [Abstract]	'
Number of operating segments	1

Segment_Reporting_Revenues_by_

Segment Reporting - Revenues by Geographic Area, Based on Billing Location of Customer (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'
Total revenues, net	$25,684	$20,113	$72,353	$55,486	'
Total long-lived assets, net	13,817	'	13,817	'	14,417	[1]
United States of America [Member]	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'
Total revenues, net	16,839	13,396	47,519	38,019	'
Total long-lived assets, net	13,203	'	13,203	'	14,050
International [Member]	'	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'	'
Total revenues, net	8,845	6,717	24,834	17,467	'
Total long-lived assets, net	$614	'	$614	'	$367
[1]	Derived from our audited consolidated financial statements as of December 31, 2013.

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'	'	'	'	'
Rent expense	$1,856	$1,752	$5,645	$5,016	'
Liabilities obligations	$0	'	$0	'	$0

Commitments_and_Contingencies_2

Commitments and Contingencies - Annual Future Minimum Payments under Operating Leases (Detail) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2014	$1,679
2015	4,500
2016	3,814
2017	3,444
2018 and thereafter	751
Future minimum lease payments for significant operating leases	$14,188