YuMe (YUME) 10-K 27 Mar 14 2013 FY Annual report Financial data

Document_And_Entity_Informatio

Document And Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Mar. 15, 2014	Aug. 07, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'YuMe Inc	'	'
Document Type	'10-K	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Common Stock, Shares Outstanding	'	32,321,236	'
Entity Public Float	'	'	$129,878,154
Amendment Flag	'false	'	'
Entity Central Index Key	'0001415624	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Filer Category	'Non-accelerated Filer	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
Current assets:	'	'
Cash and cash equivalents	$42,626,000	$27,909,000
Marketable securities	7,295,000	'
Accounts receivable, net	65,493,000	48,067,000
Prepaid expenses and other current assets	2,572,000	1,355,000
Total current assets	117,986,000	77,331,000
Marketable securities, long-term	14,186,000	'
Property, equipment and software, net	6,610,000	5,551,000
Goodwill	3,902,000	3,902,000
Intangible assets, net	2,049,000	2,847,000
Restricted cash	292,000	292,000
Deposits and other assets	362,000	691,000
Total assets	145,387,000	90,614,000
Current liabilities:	'	'
Accounts payable	7,722,000	6,893,000
Accrued digital media property owner costs	17,359,000	12,475,000
Accrued liabilities	12,734,000	7,219,000
Deferred revenue	314,000	528,000
Notes payable, current	'	185,000
Capital leases, current	359,000	631,000
Total current liabilities	38,488,000	27,931,000
Capital leases, non-current	22,000	380,000
Other long-term liabilities	139,000	178,000
Deferred tax liability	773,000	962,000
Preferred stock warrant liability	'	301,000
Total liabilities	39,422,000	29,752,000
Convertible preferred stock: $0.001 par value; 130,130,239 authorized, 129,806,334 issued and outstanding as of December 31, 2012. All convertible preferred shares were converted into shares of common shares (Note 11)	'	76,191,000	[1]
Preferred stock: $0.001 par value; 20,000,000 shares authorized, no shares issued and outstanding as of December 31, 2013 and December 31, 2012	'	0
Common stock: $0.001 par value; 200,000,000 and 192,939,347 shares authorized as of December 31, 2013 and December 31, 2012, respectively; 31,933,862 and 4,816,863 shares issued and outstanding as of December 31, 2013 and December 31, 2012, respectively	32,000	5,000
Additional paid-in-capital	127,690,000	6,782,000
Accumulated deficit	-21,677,000	-21,998,000
Accumulated other comprehensive loss	-80,000	-118,000
Total stockholders’ equity (deficit)	105,965,000	-15,329,000
Total liabilities, convertible preferred stock, and stockholders’ equity (deficit)	$145,387,000	$90,614,000
[1]	Amounts are net of issuance costs.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Convertible preferred stock, par value (in Dollars per share)	$0.00	$0.00
Convertible preferred stock, shares authorized	130,130,239	130,130,239
Convertible preferred stock, shares issued	129,806,334	129,806,334
Convertible preferred stock, shares outstanding	129,806,334	129,806,334	[1]
Preferred Stock, shares authorized (in Dollars per share)	$20,000,000	$20,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$0.00	$0.00
Common stock, shares authorized	200,000,000	192,939,347
Common stock, shares issued	31,933,862	4,816,863
Common stock, shares outstanding	31,933,862	4,816,863
Treasury stock, shares	66,666	0
[1]	Amounts are presented without giving effect to the Company's 1-for-6 reverse stock split that was effective July 24, 2013, as the number of convertible preferred stock shares did not change.

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue	$151,128	$116,744	$68,565
Cost of revenue	80,242	62,985	42,787
Gross profit	70,886	53,759	25,778
Operating expenses:	'	'	'
Sales and marketing	47,118	31,385	23,416
Research and development	4,499	2,766	2,734
General and administrative	17,992	12,466	10,596
Total operating expenses	69,609	46,617	36,746
Income (loss) from operations	1,277	7,142	-10,968
Interest and other income (expense)	'	'	'
Interest expense	-47	-117	-164
Other income (expense), net	-239	-147	-19
Total interest and other income (expense)	-286	-264	-183
Income (loss) before income taxes	991	6,878	-11,151
Income tax (expense) benefit	-670	-612	62
Net income (loss)	321	6,266	-11,089
Net income (loss) attributable to common stockholders	$321	$89	($11,089)
Net income (loss) per share attributable to common stockholders:	'	'	'
Basic (in Dollars per share)	$0.02	$0.02	($3.04)
Diluted (in Dollars per share)	$0.02	$0.02	($3.04)
Weighted-average shares used to compute net income (loss) per share attributable to common stockholders:	'	'	'
Basic (in Shares)	15,752	4,716	3,650
Diluted (in Shares)	17,250	5,545	3,650

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income (loss)	$321	$6,266	($11,089)
Other comprehensive income (loss):	'	'	'
Foreign currency translation adjustments	45	-69	-42
Unrealized loss on marketable securities, net of tax	-7	'	'
Other comprehensive income (loss)	38	-69	-42
Comprehensive income (loss)	$359	$6,197	($11,131)

Consolidated_Statements_of_Con

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) (USD $)	Convertible Preferred Stock [Member]	Convertible Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
In Thousands, except Share data	Crowd Science [Member]	USD ($)	USD ($)		USD ($)	USD ($)	USD ($)	USD ($)
	USD ($)
Balances at Dec. 31, 2010	'	$50,997	$4	'	$1,833	($17,175)	($7)	($15,345)
Balances (in Shares) at Dec. 31, 2010	'	111,059,744	3,505,520	'	'	'	'	'
Issuance of Series D-1 convertible preferred stock, net of issuance costs	'	11,922	'	'	'	'	'	'
Issuance of Series D-1 convertible preferred stock, net of issuance costs (in Shares)	'	9,134,503	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options and warrants	'	'	'	'	197	'	'	197
Issuance of common stock upon exercise of stock options and warrants (in Shares)	'	'	326,705	'	'	'	'	327,000
Issuance of common stock upon legal settlement	'	'	'	'	289	'	'	289
Issuance of common stock upon legal settlement (in Shares)	'	'	62,500	'	'	'	'	'
Issuance of restricted stock	'	'	'	'	4	'	'	4
Issuance of restricted stock (in Shares)	'	'	833	'	'	'	'	'
Stock-based compensation	'	'	'	'	1,542	'	'	1,542
Foreign currency translation adjustment	'	'	'	'	'	'	-42	-42
Net Income (Loss)	'	'	'	'	'	-11,089	'	-11,089
Balances at Dec. 31, 2011	'	62,919	4	'	3,865	-28,264	-49	-24,444
Balances (in Shares) at Dec. 31, 2011	'	120,194,247	3,895,558	'	'	'	'	'
Issuance of Series D-1 convertible preferred stock, net of issuance costs	'	9,953	'	'	'	'	'	'
Issuance of Series D-1 convertible preferred stock, net of issuance costs (in Shares)	'	7,612,087	'	'	'	'	'	'
Issuance of Series D-1 convertible preferred stock upon acquisition of Crowd Science, Inc., net of issuance costs of $21	3,319	'	'	'	'	'	'	3,319
Issuance of Series D-1 convertible preferred stock upon acquisition of Crowd Science, Inc., net of issuance costs of $21 (in Shares)	2,000,000	'	'	'	'	'	'	2,000,000
Issuance of common stock upon exercise of stock options and warrants	'	'	1	'	700	'	'	701
Issuance of common stock upon exercise of stock options and warrants (in Shares)	'	'	921,305	'	'	'	'	921,000
Income tax benefit from employee stock transactions	'	'	'	'	96	'	'	96
Stock-based compensation	'	'	'	'	2,121	'	'	2,121
Foreign currency translation adjustment	'	'	'	'	0	'	-69	-69
Net Income (Loss)	'	'	'	'	0	6,266	'	6,266
Balances at Dec. 31, 2012	'	76,191	5	'	6,782	-21,998	-118	-15,329
Balances (in Shares) at Dec. 31, 2012	'	129,806,334	4,816,863	'	'	'	'	'
Issuance of common stock upon exercise of stock options and warrants	'	'	'	'	282	'	'	282
Issuance of common stock upon exercise of stock options and warrants (in Shares)	'	'	215,960	'	'	'	'	191,773
Issuance of common stock upon the vesting of restricted stock units, net of shares withheld in connection with tax withholding requirements for net shares settlements of RSUs (in Shares)	'	'	2,168	'	'	'	'	'
Stock-based compensation	'	'	'	'	4,060	'	'	4,060
Foreign currency translation adjustment	'	'	'	'	'	'	45	45
Unrealized losses on marketable securities	'	'	'	'	'	'	-7	-7
Conversion of preferred stock to common stock	'	-76,191	22	'	76,169	'	'	76,191
Conversion of preferred stock to common stock (in Shares)	'	-129,806,334	21,840,537	'	'	'	'	21,840,537
Conversion of preferred stock warrants to common stock warrants	'	'	'	'	426	'	'	426
Initial public offering, net of issuance costs	'	'	5	'	39,971	'	'	39,976
Initial public offering, net of issuance costs (in Shares)	'	'	5,125,000	'	'	'	'	5,125,000
Treasury stock (Note 11) (in Shares)	'	'	-66,666	66,666	'	'	'	'
Net Income (Loss)	'	'	'	'	'	321	'	321
Balances at Dec. 31, 2013	'	'	$32	'	$127,690	($21,677)	($80)	$105,965
Balances (in Shares) at Dec. 31, 2013	'	'	31,933,862	66,666	'	'	'	'

Consolidated_Statements_of_Con1

Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Parentheticals) (Additional Paid-in Capital [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Issuance of Series D-1 convertible preferred stock, issuance costs	$47	$75
Crowd Science [Member]	'	'
Issuance of Series D-1 convertible preferred stock, issuance costs	$21	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities:	'	'	'
Net income (loss)	$321	$6,266	($11,089)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'	'
Depreciation and amortization	4,103	2,783	2,097
Stock-based compensation	3,834	2,042	1,468
Provision for bad debt	493	393	156
Deferred income taxes	-189	56	-142
Excess income tax benefit from the exercise of stock options	'	-96	'
Change in fair value of preferred stock warrants	125	102	-18
Changes in operating assets and liabilities, net of effect of acquisitions:	'	'	'
Accounts receivable	-17,919	-16,520	-12,168
Prepaid expenses and other current assets	-1,227	-378	-146
Deposits and other assets	173	-62	-332
Accounts payable	447	-1,175	-2,942
Accrued digital media property owner costs	4,884	6,530	4,834
Accrued liabilities	5,671	2,486	960
Deferred revenue	-214	212	-308
Other liabilities	-39	44	73
Net cash provided by (used in) operating activities	463	2,683	-17,557
Investing activities:	'	'	'
Purchases of property and equipment	-1,992	-1,716	-1,437
Capitalized software development costs	-1,752	-747	-739
Purchases of marketable securities	-21,488	'	'
Acquisitions, net of cash acquired	'	-844	-1,279
Change in restricted cash	'	-292	'
Net cash used in investing activities	-25,232	-3,599	-3,455
Financing activities:	'	'	'
Proceeds from initial public offering, net of offering costs	39,976	'	'
Net proceeds from the issuance of convertible preferred stock	'	9,953	11,922
Repayments of borrowings under notes payable	-185	-344	-324
Repayments of borrowings under capital leases	-632	-535	-373
Excess income tax benefit from the exercise of stock options	'	96	'
Proceeds from exercise of common stock options and warrants	282	701	201
Net cash provided by financing activities	39,441	9,871	11,426
Effect of exchange rate changes on cash and cash equivalents	45	-69	-9
Change in cash and cash equivalents	14,717	8,886	-9,595
Cash and cash equivalents—Beginning of period	27,909	19,023	28,618
Cash and cash equivalents—End of period	42,626	27,909	19,023
Supplemental disclosures of cash flow information:	'	'	'
Cash paid for interest	48	117	164
Cash paid for income taxes	440	85	55
Stock-based compensation capitalized for internal-use software	226	79	74
Non-cash investing and financing activities:	'	'	'
Purchases of property and equipment under capital lease obligations	'	187	1,732
Purchases of property and equipment recorded in accounts payable	382	200	17
Deferred offering costs recorded in accounts payable and accrued liabilities	'	156	'
Issuance of 2,000,000 shares of Series D-1 preferred stock for acquisition of Crowd Science, Inc.	'	$3,319	'

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parentheticals)	12 Months Ended
	Dec. 31, 2012
Issuance of 2,000,000 shares of Series D-1 preferred stock for acquisition of Crowd Science, Inc. - shares	2,000,000

Note_1_Organization_and_Descri

Note 1 - Organization and Description of Business	12 Months Ended
	Dec. 31, 2013
Disclosure Text Block [Abstract]	'
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	'
	1.    Organization and Description of Business
	Organization and Nature of Operations
	YuMe, Inc. (the "Company") was incorporated in Delaware on December 16, 2004. The Company, including its wholly-owned subsidiaries, is a leading independent provider of digital video brand advertising solutions. The Company's proprietary technologies serve the specific needs of brand advertisers and enable them to find and target large, brand-receptive audiences across a wide range of Internet connected devices and digital media properties. The Company's software is used by global digital media properties to monetize professionally-produced content and applications. The Company facilitates digital video advertising by dynamically matching relevant audiences available through its digital media property partners with appropriate advertising campaigns from its advertising customers.
	The Company helps its advertising customers overcome the complexities of delivering digital video advertising campaigns in a highly fragmented environment where dispersed audiences use a growing variety of Internet-connected devices to access thousands of online and mobile websites and applications. The Company delivers video advertising impressions across personal computers, smartphones, tablets, set-top boxes, game consoles, Internet-connected TVs and other devices. The Company's video ads run when users choose to view video content on their devices. On each video advertising impression, the Company collects dozens of data elements that it uses for its advanced audience modeling algorithms that continuously improve brand-targeting effectiveness.
	Basis of Presentation
	The Company’s consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”).
	In July 2013, the Company's board of directors and stockholders approved an amendment to the amended and restated certificate of incorporation. The amendment provided for a 1-for-6 reverse stock split of the outstanding common stock, effective July 24, 2013. Accordingly, (i) every six shares of common stock have been combined into one share of common stock, (ii) the number of shares of common stock into which each outstanding option or warrant to purchase common stock is exercisable, as the case may be, have been proportionately decreased on a 1-for-6 basis, (iii) the exercise price for each such outstanding option or warrant to purchase common stock has been proportionately increased on a 6-for-1 basis, and (iv) the conversion ratio for each share of preferred stock outstanding was proportionately reduced on a 1-for-6 basis. All of the share numbers, share prices, and exercise prices have been adjusted within these financial statements, on a retroactive basis, to reflect this 1-for-6 reverse stock split. The Company paid cash in lieu of any fractional shares to which a holder of common stock would otherwise be entitled as a result of the reverse stock split.
	On August 12, 2013, the Company closed the initial public offering (“IPO”) of its common stock pursuant to a registration statement on Form S-1. In the IPO, the Company sold 5,125,000 shares of common stock at a public offering price of $9.00 per share. Net proceeds were approximately $40.0 million, after deducting underwriting discounts and commissions of $3.2 million and offering expenses of $2.9 million. Upon the closing of the IPO, all outstanding shares of the Company’s convertible preferred stock automatically converted into 21,840,537 shares of common stock and all outstanding warrants to purchase convertible preferred stock converted into warrants to purchase 53,983 shares of common stock.
	Basis of Consolidation
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
	Certain Significant Risks and Uncertainties
	The Company operates in a dynamic industry and, accordingly, can be affected by a variety of factors. For example, the Company believes that changes in any of the following areas could have a significant negative effect on its future financial position, results of operations, or cash flows: rates of revenue growth; traffic to and pricing with the Company's network of digital media property owners; scaling and adaptation of existing technology and network infrastructure; management of the Company's growth; new markets and international expansion; protection of the Company's brand, reputation and intellectual property; competition in the Company's markets; recruiting and retaining qualified employees and key personnel; intellectual property infringement and other claims; and changes in government regulation affecting the Company's business, among other things.

Note_2_Summary_of_Significant_

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies [Text Block]	'
	2.    Summary of Significant Accounting Policies
	Use of Estimates
	The preparation of the Company's consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ from management's estimates.
	Foreign Currency Translation and Transactions
	The consolidated financial statements of the Company's foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities of foreign subsidiaries are translated at exchange rates in effect as of the balance sheet date. Revenues and expenses are translated at average exchanges rates in effect during the period. Translation adjustments are recorded within accumulated other comprehensive loss, a separate component of stockholders' equity (deficit), on the consolidated balance sheets. Foreign exchange transaction gains and losses have not been material to the Company's consolidated financial statements for all periods presented.
	Cash and Cash Equivalents
	To date, the Company invests its excess cash in money market funds. The Company considers all highly liquid financial instruments purchased with original maturities of three months or less to be cash equivalents.
	Marketable Securities
	The Company began investing its cash and cash equivalents in marketable securities during the fourth quarter of 2013. Marketable securities are classified as available-for-sale and consist of highly liquid corporate bonds, commercial paper and certificates of deposits that comply with the Company’s minimum credit rating policy. Short-term marketable securities consist of investments with final maturities of at least three months from the date of purchase that the Company intends to own for up to 12 months. Long-term marketable securities consist of investments with final maturities of more than 12 months from the date of purchase that the Company intends to own for more than 12 months, but not more than 24 months. By policy, the final maturity for each security within the portfolio shall not exceed 24 months from the date of purchase and the weighted average maturity of the portfolio shall not exceed 12 months at any point in time. Marketable securities are carried at fair value with unrealized gains and losses, net of taxes, reported as a component of stockholders’ equity (deficit) on the consolidated balance sheets. See Note 4 for additional information regarding the Company’s marketable securities.
	Restricted Cash
	The lease agreement for the Company's New York office requires a security deposit to be maintained in the form of an unconditional, irrevocable letter of credit issued to the benefit of the landlord. The letter of credit is subject to renewal annually until the lease expires. As of December 31, 2013 and 2012, the Company had letters of credit totaling $0.3 million included in restricted cash in the consolidated financial statements.
	Concentrations and Other Risks
	Financial instruments that subject the Company to a concentration of credit risk consist of cash and cash equivalents, marketable securities and accounts receivable. Cash and cash equivalents are deposited with one domestic and five foreign highly rated financial institutions and cash equivalents are invested in highly rated money market funds. Periodically, such balances may be in excess of federally insured limits. Marketable securities consist of highly liquid corporate bonds, commercial paper and certificates of deposits that comply with the Company’s minimum credit rating policy.
	Except for the Company’s single largest advertising agency customer noted below, credit risk with respect to accounts receivable is dispersed due to the large number of advertising customers. Collateral is not required for accounts receivable. The Company performs ongoing credit evaluations of customers’ financial condition and periodically evaluates its outstanding accounts receivable and establishes an allowance for doubtful accounts based on the Company’s historical experience, the current aging and circumstances of accounts receivable and general industry and economic conditions. Accounts receivable are written off by the Company when it has been determined that all available collection avenues have been exhausted. Historically, write-offs for uncollectible accounts have not been significant. However if circumstances change, higher than expected bad debts may result in future write-offs that are greater than the Company’s estimates.
	One advertising agency customer accounted for 19%, 21% and 15% of the Company’s revenue in 2013, 2012 and 2011, respectively. The same customer accounted for 17% and 27% of the Company’s accounts receivable as of December 31, 2013 and 2012, respectively.
	The following table presents the changes in the allowance for doubtful accounts (in thousands):
		Years Ended December 31,
		2013		2012		2011
	Allowance for doubtful accounts:
	Balance – beginning of period	$	563	$	170	$	14
	Provision for bad debt		493		393		156
	Balance – end of period	$	1,056	$	563	$	170
	The Company did not write-off any doubtful accounts as bad debt during the years ended December 31, 2013, 2012 and 2011.
	Property, Equipment and Software
	Property and equipment are stated at cost, net of accumulated depreciation and amortization. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets, which are generally three to five years. Leasehold improvements are amortized over the shorter of the asset life or remaining lease term.
	Internal-Use Software Development Costs
	The Company capitalizes the costs to develop internal-use software when preliminary development efforts are successfully completed, it has authorized and committed project funding, and it is probable that the project will be completed and the software will be used as intended. Such costs are amortized on a straight-line basis over the estimated useful life of the software, which approximates three years. Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed as incurred. Costs incurred for upgrades and enhancements that are expected to result in additional material functionality are capitalized and amortized over the respective estimated useful life.
	The Company capitalized $2.0 million, $0.8 million and $0.8 million of internal-use software costs during the years ended December 31, 2013, 2012 and 2011, respectively, which are included in property, equipment and software on the consolidated balance sheets. Amortization expense totaled approximately $1.0 million, $0.9 million and $0.7 million for the years ended December 31, 2013, 2012 and 2011, respectively.
	Impairment of Long-lived Assets
	The Company evaluates its long-lived assets for impairment when circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured as the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported as a separate caption at the lower of the carrying amount or fair value less costs to sell. There were no impairment charges recorded or changes in estimated useful lives during years ended December 31, 2013, 2012 and 2011.
	Deferred Offering Costs
	Deferred offering costs consisted primarily of direct incremental costs related to the Company's IPO. Upon completion of the IPO in August 2013, these amounts were offset against the proceeds of the offering. Consequently, there were no deferred offering costs included on the Company’s consolidated balance sheets as of December 31, 2013. There were $0.2 million of deferred offering costs included in “Deposits and other assets” on the consolidated balance sheets as of December 31, 2012.
	Deferred Rent
	The Company leases facilities worldwide under non-cancelable operating leases that expire through October 2016. These leases contain various renewal options. The Company recognizes rent holidays and escalating rent provisions on a straight-line basis over the term of the lease. The Company's deferred rent liability related to these facilities was approximately $0.2 million at both December 31, 2013 and 2012, which are included in “Accrued liabilities” and “Other long-term liabilities” on the consolidated balance sheets.
	Revenue Recognition
	The Company's revenue is principally derived from advertising services measured by the number of advertising impressions displayed on digital media properties owned and controlled by third-party digital media property owners and primarily priced on a cost per thousand impressions ("CPM") basis. The Company recognizes revenue when: (1) persuasive evidence exists of an arrangement with the customer reflecting the terms and conditions under which products or services will be provided; (2) delivery has occurred or services have been provided; (3) the fee is fixed or determinable; and (4) collection is reasonably assured. For all revenue transactions, the Company considers a signed agreement, a binding insertion order or other similar documentation to be persuasive evidence of an arrangement. Arrangements for these services generally have a term of up to three months. In some cases the term may be up to one year or more.
	In the normal course of business, the Company acts as a facilitator in executing transactions with third parties. The determination of whether revenue should be reported on a gross or net basis is based on an assessment of whether the Company is acting as the principal or an agent in the transaction. In determining whether the Company acts as the principal or an agent, the Company follows the accounting guidance for principal-agent considerations. While none of the factors identified in this guidance is individually considered presumptive or determinative, because the Company is the primary obligor and is responsible for (i) identifying and contracting with third-party advertisers, (ii) establishing the selling prices of the advertisements sold, (iii) performing all billing and collection activities including retaining credit risk and (iv) bearing sole responsibility for fulfillment of the advertising, which may also include committing to buy advertising inventory in advance, the Company acts as the principal in these arrangements and therefore reports revenue earned and costs incurred on a gross basis.
	The Company recognizes revenue based on delivery information from a combination of third-party reporting and the Company's proprietary campaign tracking systems.
	Multiple-element Arrangements
	The Company enters into arrangements with customers to sell advertising packages that include different media placements or ad services that are delivered at the same time, or within close proximity of one another.
	Beginning on January 1, 2011, the Company adopted new authoritative guidance on multiple-element arrangements, using the prospective method for all arrangements entered into or materially modified from the date of adoption. Under this new guidance, at the inception of an arrangement, the Company allocates arrangement consideration in multiple-deliverable revenue arrangements to all deliverables, based on the relative selling price method in accordance with the selling price hierarchy, which includes: (1) vendor-specific objective evidence ("VSOE") if available; (2) third-party evidence ("TPE") if VSOE is not available; and (3) best estimate of selling price ("BESP") if neither VSOE nor TPE is available.
	VSOE—The Company evaluates VSOE based on its historical pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, the Company requires that a substantial majority of the standalone selling prices for these services fall within a reasonably narrow pricing range. The Company historically has not entered into a large volume of single-element arrangements, so it has not been able to establish VSOE for any of its advertising products.
	TPE—When VSOE cannot be established for deliverables in multiple element arrangements, the Company applies judgment with respect to whether it can establish a selling price based on TPE. TPE is determined based on competitor prices for similar deliverables when sold separately. Generally, the Company's go-to-market strategy differs from that of its peers and its offerings contain a significant level of differentiation such that the comparable pricing of services cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor services' selling prices are on a standalone basis. As a result, the Company has not been able to establish selling price based on TPE.
	BESP—When it is unable to establish selling price using VSOE or TPE, the Company uses BESP in its allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact a sale if the service were sold on a standalone basis. BESP is generally used to allocate the selling price to deliverables in the Company's multiple-element arrangements. The Company determines BESP for deliverables by considering multiple factors including, but not limited to, prices it charges for similar offerings, class of advertiser, size of transaction, seasonality, observed pricing trends, available online inventory, industry pricing strategies, market conditions and competitive landscape. The Company limits the amount of allocable arrangement consideration to amounts that are fixed or determinable and that are not contingent on future performance or future deliverables. The Company periodically reviews its BESP. Changes in assumptions or judgments or changes to the elements in the arrangement could cause a material increase or decrease in the amount of revenue that the Company reports in a particular period.
	The Company recognizes the relative fair value of the media placements or ad services as they are delivered assuming all other revenue recognition criteria are met. Deferred revenue is comprised of contractual billings in excess of recognized revenue and payments received in advance of revenue recognition.
	Cost of revenue
	Cost of revenue consists of amounts incurred with digital media property owners that are directly related to a revenue-generating event, direct labor costs, amortization of revenue-producing acquired technologies, Internet access costs and depreciation expense. The Company incurs costs with digital media property owners in the period the advertising impressions are delivered or in limited circumstances, based on minimum guaranteed number of impressions. Such amounts incurred are classified as cost of revenue in the corresponding period in which the revenue is recognized in the consolidated statements of operations.
	Advertising expense
	The Company's advertising costs are expensed as incurred. The Company incurred approximately $1.5 million, $0.6 million and $0.8 million in advertising expenses for the years ended December 31, 2013, 2012 and 2011, respectively.
	Comprehensive Income (Loss)
	Comprehensive income (loss) consists of net income (loss) and changes in accumulated other comprehensive income (loss), which are primarily the result of foreign currency translation adjustments and unrealized gains or losses on marketable securities, net of tax.
	Stock-based Compensation
	The Company measures compensation expense for all stock-based payment awards, including stock options granted to employees, directors and non-employees based on the estimated fair values on the date of the grant. The fair value of each stock option granted is estimated using the Black-Scholes option valuation model. Stock-based compensation expense related to restricted stock units (“RSUs”) is based on the grant date fair value of the RSUs. Stock-based compensation is recognized on a straight-line basis over the requisite service period.
	Stock-based compensation expense is recorded net of estimated forfeitures in our consolidated statements of income and as such is recorded for only those share-based awards that we expect to vest. We estimate the forfeiture rate based on historical forfeitures of equity awards and adjust the rate to reflect changes in facts and circumstances, if any. We will revise our estimated forfeiture rate if actual forfeitures differ from our initial estimates.
	Goodwill
	Goodwill is not amortized, but is tested for impairment at least annually or as circumstances indicate the value may no longer be recoverable. The Company evaluates goodwill for impairment annually in the fourth quarter of its fiscal year or, whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable. Triggering events that may indicate impairment include, but are not limited to, a significant adverse change in customer demand or business climate that could affect the value of goodwill or a significant decrease in expected cash flows. Through December 31, 2013, no impairment of goodwill has been identified.
	In September 2011, the Financial Accounting Standards Board ("FASB") issued an accounting standard update that permits entities to first assess qualitative factors to determine whether it is more likely than not (a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. This new guidance was adopted by the Company on January 1, 2012 on a prospective basis and the adoption of did not materially impact the Company’s consolidated financial statements. The Company has elected to first assess qualitative factors to determine whether it is necessary to perform the two-step annual goodwill impairment test in 2013 and 2012. The Company assessed qualitative factors including its market capitalization, stock price, industry and market conditions, cost factors and cash flows and concluded that it was more likely than not that the fair value of its sole reporting unit is greater than the carrying value of goodwill.
	Intangible Assets
	Acquired intangible assets consist of acquired customer relationships, developed technology and non-compete agreements. Acquired intangible assets are recorded at fair value, net of accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives. The Company reviews identifiable amortizable intangible assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. Determination of recoverability is based on the lowest level of identifiable estimated undiscounted cash flows resulting from use of the asset and its eventual disposition. Measurement of any impairment loss is based on the excess of the carrying value of the asset over its fair value. Through December 31, 2013, no impairment of intangibles has been identified.
	Preferred Stock Warrant Liability
	Freestanding warrants related to shares of the Company’s preferred stock that were contingently redeemable were classified as a liability on the Company's consolidated balance sheet as of December 31, 2012. The convertible preferred stock warrants were subject to re-measurement at each balance sheet date up to the date of our IPO on August 7, 2013, and any changes in fair value were recognized as a component of “Other income (expense), net.” As of August 7, 2013, all redeemable convertible preferred stock warrants were converted into warrants to purchase common stock and the liability of $0.4 million was reclassified to additional paid-in capital.
	Income Taxes
	The Company records income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company's consolidated financial statements or income tax returns. In estimating future tax consequences, expected future events other than enactments or changes in the tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized.
The Company operates in various tax jurisdictions and is subject to audit by various tax authorities. The Company provides for tax contingencies whenever it is deemed probable that a tax asset has been impaired or a tax liability has been incurred for events such as tax claims or changes in tax laws. Tax contingencies are based upon their technical merits, relative tax law, and the specific facts and circumstances as of each reporting period. Changes in facts and circumstances could result in material changes to the amounts recorded for such tax contingencies.
The Company records uncertain tax positions in accordance with accounting standards on the basis of a two-step process whereby (1) a determination is made as to whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold the Company recognizes the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
Recently Issued Accounting Standards
Under the Jumpstart Our Business Startups Act (“JOBS”) Act, the Company meets the definition of an “emerging growth company.” The Company has irrevocably elected to opt out of the extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act, and, therefore, we will be subject to the same new or revised accounting standards as other public companies that are not “emerging growth companies.”
In February 2013, the FASB issued Accounting Standards Updates (“ASU”) 2013-2, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income (ASU 2013-2), to improve the reporting of reclassifications out of accumulated other comprehensive income. ASU 2013-2 requires presentation, either on the face of the financial statements or in the notes, of amounts reclassified out of accumulated other comprehensive income by component and by net income line item. ASU 2013-2 is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2012. The Company adopted ASU 2013-2 in the first quarter of fiscal 2014. The adoption of ASU 2013-2 did not have a significant impact on the Company's consolidated financial statements.
In July 2013, the FASB issued amended standards that provided explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward or a tax credit carryforward exists. 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 new guidance became effective on January 1, 2014 and should be applied prospectively to unrecognized tax benefits that exist at the effective date with retrospective application permitted. The Company is currently assessing the impact of this new guidance.

Note_3_Acquisitions

Note 3 - Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	3.     Acquisitions
	Appealing Media Limited
	On June 15, 2011 the Company completed the acquisition of Appealing Media Limited ("Appealing Media"), a European based mobile video advertising company representing premium digital media property owners across the mobile Web. All of the share capital of Appealing Media was acquired for a cash consideration of $1.3 million. The goodwill generated from the business combination is primarily related to expected synergies. The goodwill is not deductible for U.S. federal income tax purposes.
	The acquisition was accounted for as a business combination in accordance with Accounting Standards Codification Topic (“ASC”) 805 with the results of the acquired company's operations included in the consolidated financial statements starting on June 15, 2011. The key factors underlying the acquisition were to secure a European market presence, obtain the acquired company's proprietary technologies, and the opportunity for expansion.
	The aggregate purchase consideration and estimated fair values of the assets acquired and liabilities assumed at the date of acquisition were as follows (in thousands):
		Fair Value
	Fair value of purchase consideration:
	Cash consideration	$	1,000
	Cash escrow account		300
	Total purchase consideration	$	1,300
	Fair Value
	Fair value of net assets acquired:
	Cash	$	21
	Other current assets		168
	Property and equipment		48
	Developed technology		350
	Customer relationships		104
	Non-compete agreement		53
	Goodwill		889
	Total assets acquired		1,633
	Total liabilities assumed		333
	Net assets acquired	$	1,300
	Details related to the estimated useful lives and valuation techniques utilized for estimating fair value of the intangible assets acquired are as follows:
	Intangible Type	Valuation Type		Useful Life (years)
	Developed Technology	Relief from royalty method		3
	Customer Lists	Excess earnings method		5
	Non-Compete	With and without method under the income approach		2
	Pursuant to the acquisition, in 2012, the Company paid an earn-out to the principal selling shareholders of Appealing Media of $1.1 million in cash for achieving certain revenue and operational goals within one year from acquisition as listed below (dollars in thousands):
		Maximum Payout			Achievement			Actual Payout
	Revenue target	$	1,200			50	%	$	600
	Hiring targets		500			100	%		500
		$	1,700					$	1,100
	The Company accounted for the earn-out as post combination expense as the achievement of the above goals was contingent on the continuing employment of the principal selling shareholders. For the years ended December 31, 2012 and 2011, $0.6 million and $0.5 million, respectively was recorded in operating expenses under “General and administrative” in the consolidated statements of operations for the earn-outs that were achieved.
	In addition, the Company granted stock options to the principal selling shareholders of the acquired company, who continued as employees of the Company, that would vest based on the revenue targets attained. For the years ended December 31, 2012 and 2011, $0.1 million and $0, respectively, of stock compensation expense was recorded in operating expenses under “General and administrative” in the consolidated statements of operations.
	For the year ended December 31, 2011, the Company recorded acquisition-related transaction costs of approximately $0.4 million, which were included in operating expense under “General and administrative” in the consolidated statement of operations.
	The following unaudited pro forma financial information presents the results of operations of the Company and the acquired company as if the acquisition had occurred on January 1, 2011. The pro forma financial information is provided for comparative purposes only and is not necessarily indicative of what the actual results would have been had the acquisition occurred on January 1, 2011 (in thousands, except per share amounts):
		Pro Forma for the Year Ended December 31, 2011
	Revenue	$	68,940
	Net income	$	(11,186	)
	Basic and diluted net loss per share attributable to common stockholders	$	(0.51	)
	Crowd Science, Inc.
	On December 28, 2012, the Company completed the acquisition of Crowd Science, Inc. ("Crowd Science"), a technology company providing online digital media properties audience measurement, ad targeting and web analytics. All of the share capital for Crowd Science was acquired in exchange for $1.1 million in cash and 2,000,000 shares of Series D-1 convertible preferred stock valued at $3.3 million, for a total consideration of $4.4 million. The Company held back $49,000 in cash and 400,000 shares of Series D-1 convertible preferred stock classified as contingent consideration to non-employee stockholders at the closing of the acquisition until the second anniversary of the closing date for general representations and warranties as well as performance conditions tied to the expected continuing employment of key employees. The goodwill generated from the Company's business combination is primarily related to expected synergies. The goodwill is deductible for U.S. federal income tax purposes.
	The fair value of the Series D-1 convertible preferred stock of $1.67 per share was based on management's contemporaneous valuation of the Company as of December 28, 2012, the date of acquisition. In determining the enterprise equity value of the Company, management used a valuation methodology based on the income approach and the market approach utilizing guideline public companies. Once an enterprise equity value was calculated, management used the option pricing method to allocate the value to each series of preferred stock and common stock which generated a value of $1.67 per share of Series D-1 preferred stock.
	As a condition to its acquisition of Crowd Science, the parties agreed that all amounts held back by the Company at closing, consisting of $49,000 in cash and 400,000 shares of Series D-1 convertible stock, may be permanently withheld by the Company if any key employee (identified in the acquisition agreement) were to voluntarily terminate his employment with the Company within the first year after closing of the acquisition. The performance conditions were not met during 2013. As such, the Company accounted for the settlement of this contingent consideration within equity during 2013. The Company’s 1-for-6 reverse stock split effective July 2013 and the conversion of preferred stock to common stock associated with the Company’s IPO in August 2013 resulted in the number of shares permanently held back by the Company to become 66,666 common stock shares. The Company accounts for the withheld shares as 66,666 shares of treasury stock.
	The acquisition was accounted for as a business combination in accordance with ASC 805 with the results of the acquired company's operations included in the consolidated financial statements starting on December 28, 2012. The key factors underlying the acquisition were to acquire technology that would enhance audience reach and targeting across all video devices.
	The aggregate purchase consideration and estimated fair values of the assets acquired and liabilities assumed at the date of acquisition were as follows (in thousands):
		Fair Value
	Fair value of purchase consideration:
	Cash consideration	$	1,033
	Cash escrow account		49
	2,000,000 Series D-1 preferred stock shares		3,319
	Series D-1 issuance costs		21
	Total purchase consideration	$	4,422
	Fair Value
	Fair value of net assets acquired:
	Cash	$	259
	Accounts receivable		163
	Other current assets		63
	Property and equipment		14
	Other assets		30
	Developed technology		2,600
	Goodwill		3,013
	Total assets acquired		6,142
Accounts payable and accruals		461
Deferred revenue		223
Deferred tax liability		1,036
Total liabilities assumed		1,720
Net assets acquired	$	4,422
Details related to estimated useful lives and the valuation techniques utilized for estimating fair value of the intangible assets acquired are shown below:
Intangible Type	Valuation Type		Useful Life (years)
Developed Technology	Discounted cash flow method		4
The following unaudited pro forma financial information presents the results of operations of the Company and the acquired company as if the acquisition had occurred on January 1, 2011. The pro forma financial information is provided for comparative purposes only and is not necessarily indicative of what the actual results would have been had the acquisition occurred on January 1, 2011 (in thousands, except per share amounts):
	Pro Forma for the Year Ended December 31, 2012			Pro Forma for the Year Ended December 31, 2011
Revenue	$	117,441		$	69,146
Net income	$	2,676		$	(15,523	)
Basic and diluted net income (loss) per share attributable to common stockholders	$	0		$	(4.25	)
The acquisition related costs of approximately $0.2 million incurred during the year ended December 31, 2012 are presented in the pro forma results of the Company and Crowd Science for the year ended December 31, 2011.

Note_4_Cash_Cash_Equivalents_a

Note 4 - Cash, Cash Equivalents and Marketable Securities	12 Months Ended
	Dec. 31, 2013
Cash and Cash Equivalents [Abstract]	'
Cash and Cash Equivalents Disclosure [Text Block]	'
	4.    Cash, Cash Equivalents and Marketable Securities
	The Company’s cash equivalents consist of highly liquid fixed-income investments with original maturities of three months or less at the time of purchase. The Company has cash and cash equivalents held on its behalf by a third party of $0.2 million and $0.4 million as of December 31, 2013 and 2012, respectively. Short- and long-term marketable securities are comprised of highly liquid available-for-sale financial instruments (primarily corporate bonds, commercial paper and certificates of deposit) with final maturities of at least three months but no more than 24 months from the date of purchase. The cost, gross unrealized gains and losses and fair value of the Company’s marketable securities consisted of the following as of December 31, 2013 and 2012 (in thousands):
		Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	December 31, 2013:
	Cash	$	24,255	$	—	$	—		$	24,255
	Cash equivalents:
	Money market funds		18,371		—		—			18,371
	Total cash and cash equivalents		42,626		—		—			42,626
	Marketable securities:
	Corporate bonds		17,892		3		(10	)		17,885
	Commercial paper		2,396		—		—			2,396
	Certificates of deposit		1,200		—		—			1,200
	Total marketable securities		21,488		3		(10	)		21,481
	Total cash, cash equivalents and marketable securities	$	64,114	$	3	$	(10	)	$	64,107
		Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	December 31, 2012:
	Cash	$	14,401	$	—	$	—		$	14,401
	Cash equivalents:
	Money market funds		13,508		—		—			13,508
	Total cash and cash equivalents	$	27,909	$	—	$	—		$	27,909
	During the year ended December 31, 2013, no marketable securities were sold or matured and no gains or losses were realized. Unrealized gains and losses, net of taxes, are included in “Accumulated other comprehensive loss,” which is reflected as a separate component of stockholders’ equity on the consolidated balance sheets. The Company did not own any marketable securities as of December 31, 2012.

Note_5_Fair_Value_of_Financial

Note 5 - Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures [Text Block]	'
	5.    Fair Value of Financial Instruments
	The accounting guidance for fair value measurements prioritizes the inputs used in measuring fair value in the following hierarchy:
	Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities;
	Level 2 – Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and
	Level 3 – Unobservable inputs for which there is little or no market data, which require the Company to develop its own assumptions.
	A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The carrying amounts of accounts receivable, accounts payable and accrued liabilities, approximate fair value due to their relatively short maturities. Based on the borrowing rates currently available to the Company for debt with similar terms, the carrying value of the borrowings under the Company’s Loan and Security Agreement (the “Loan Agreement”) with Silicon Valley Bank (“SVB”) approximate fair value (using Level 2 inputs).
	Prior to the conversion of the Company’s warrant liability on August 12, 2013, its preferred stock warrants were recorded at fair value. On August 12, 2013, upon the closing of the Company’s IPO, the warrants were converted from warrants to purchase preferred stock to warrants to purchase common stock and the liability at their then fair value of $0.4 million was reclassified to additional paid-in capital. Prior to this date, all changes in the fair value of the warrants were recorded in “Other income (expense), net” in the consolidated statements of operations. The fair value of the warrants outstanding, which were remeasured to fair value on a recurring basis at each balance sheet date, was determined using the Black-Scholes option pricing model. See Note 9 for additional information. The Company recorded other income of $0.1 million in both 2013 and 2012, respectively, and other expense of $18,000 in 2011, related to the fair value adjustment of its warrants.
	Marketable securities with final maturities of at least three months but no more than 12 months from the date of purchase are classified as short-term and marketable securities with final maturities of more than one year but less than two years from the date of purchase are classified as long-term. Our marketable securities are classified as available-for-sale and consist of high quality, investment grade securities from diverse issuers with predetermined minimum credit ratings. The Company values these securities based on pricing from pricing vendors who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. However, the Company classifies all of its marketable securities as having Level 2 inputs. The valuation techniques used to measure the fair value of the Company’s marketable securities having Level 2 inputs were derived from market prices that are corroborated by observable market data and quoted market prices for similar instruments.
	The following tables present information about the Company’s money market funds, marketable securities and warrant liability measured at fair value on a recurring basis as of December 31, 2013 and 2012 and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value (in thousands):
			Fair Value Measurements at December 31, 2013
			Level 1			Level 2		Level 3			Total
	Money market funds		$	18,371		$	–	$	–		$	18,371
	Marketable securities:
	Corporate bonds		$	–		$	17,885	$	–		$	17,885
	Commercial paper						2,396					2,396
	Certificates of deposit						1,200					1,200
	Total marketable securities		$	–		$	21,481	$	–		$	21,481
			Fair Value Measurements at December 31, 2012
			Level 1			Level 2		Level 3			Total
	Money market funds		$	13,508		$	–	$	–		$	13,508
	Warrant liability		$	–		$	–	$	301		$	301
	The following table summarizes the changes in the warrant liability classified in Level 3 for the years ended December 31, 2013, 2012 and 2011. Gains and losses reported in this table include changes in fair value that are attributable to both observable and unobservable inputs (in thousands):
			Years Ended December 31,
			2013			2012		2011
	Beginning balance		$	301		$	199	$	217
	Change in fair value recorded in other income (expense), net			125			102		(18	)
	Reclassification of warrants to additional paid-in capital in connection with the IPO(1)			(426	)		–		–
	Ending Balance		$	–		$	301	$	199
		-1	Upon the closing of the IPO, all outstanding warrants to purchase convertible preferred stock converted into warrants to purchase shares of common stock. Consequently, the Company reclassified the balance of these warrants to additional paid-in capital.

Note_6_Property_Equipment_and_

Note 6 - Property, Equipment and Software	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment Disclosure [Text Block]	'
	6.    Property, Equipment and Software
	Property, equipment and software consisted of the following (in thousands):
		December 31,
		2013			2012
	Office furniture and fixtures	$	494		$	464
	Equipment and computers		7,082			5,069
	Leasehold improvements		1,679			1,573
	Software		1,305			1,080
	Internally developed software costs		5,544			3,564
	Total property, equipment and software		16,104			11,750
	Less: accumulated depreciation and amortization		(9,494	)		(6,199	)
	Property, equipment and software, net	$	6,610		$	5,551
	Depreciation and amortization expense, including amortization of internal use software costs, was approximately $3.3 million, $2.6 million and $2.0 million, for the years ended December 31, 2013, 2012 and 2011, respectively.
	Assets recorded under capital leases consist primarily of data center equipment and were as follows (in thousands):
		December 31,
		2013			2012
	Gross assets under capital leases	$	1,910		$	1,910
	Less: accumulated depreciation		(1,597	)		(960	)
	Net assets under capital leases	$	313		$	950

Note_7_Goodwill_and_Intangible

Note 7 - Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	7.    Goodwill and Intangible Assets
	As a result of the acquisition of Appealing Media on June 15, 2011, the Company recorded the fair value of acquired intangible assets and goodwill in the amount of $0.9 million for the excess of purchase consideration over the fair value of assets and liabilities acquired. In addition, as a result of the acquisition of Crowd Science, Inc. on December 28, 2012, the Company recorded the fair value of acquired intangible assets and goodwill in the amount of $3.0 million for the excess of purchase consideration over the fair value of assets and liabilities acquired.
	The intangible assets detail for the periods presented (dollars in thousands):
		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted-Average Remaining Life (years)
	December 31, 2013:
	Developed technology	$	2,950	$	(951	)	$	1,999		2.7
	Customer relationships		104		(54	)		50		2.4
	Non-compete agreement		53		(53	)		-		-
		$	3,107	$	(1,058	)	$	2,049
	December 31, 2012:
	Developed technology	$	2,950	$	(185	)	$	2,765		3.7
	Customer relationships		104		(33	)		71		3.4
	Non-compete agreement		53		(42	)		11		0.4
		$	3,107	$	(260	)	$	2,847
	Amortization expense for years ended December 31, 2013, 2012 and 2011 was $0.8 million, $0.2 million and $0.1 million, respectively. Amortization expense related to developed technology is included as a component of “Cost of revenue” in the consolidated statements of operations.
	Estimated future amortization expense of purchased intangible assets at December 31, 2013 was as follows (in thousands):
	Years ending December 31,:	Amount
	2014	$	719
	2015		671
	2016		659
	Total future amortization expense	$	2,049

Note_8_Accrued_Liabilities

Note 8 - Accrued Liabilities	12 Months Ended
	Dec. 31, 2013
Payables and Accruals [Abstract]	'
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	'
	8.     Accrued Liabilities
	Accrued liabilities consisted of the following (in thousands):
		December 31,
		2013		2012
	Accrued compensation	$	5,727	$	3,554
	Accrued vacation and other employee benefits		3,081		1,673
	Accrued customer incentives		1,540		-
	Accrued taxes		559		665
	Other accrued expenses		1,827		1,327
	Total accrued liabilities	$	12,734	$	7,219

Note_9_Borrowings

Note 9 - Borrowings	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt Disclosure [Text Block]	'
	9.    Borrowings
	In September 2009, the Company entered into a Loan Agreement (the “Loan Agreement”) with Silicon Valley Bank (“SVB”). The Loan Agreement provided for borrowings up to $1.0 million to finance purchases of equipment through December 2013. Borrowings against the line of credit bear interest at a fixed rate of 8% per annum and require 36 equal monthly installments of principal and interest. The Company had no borrowings and $0.2 million of borrowings outstanding under this line of credit as of December 31, 2013 and 2012, respectively. Borrowings under the Loan Agreement are collateralized by the equipment financed under this agreement.
	In February 2010, the Company entered into a Loan and Security Agreement (the "Credit Agreement") with SVB for the purpose of financing its accounts receivable balance. The Credit Agreement was amended and restated in March 2011 and May 2012 and provided for a revolving line of credit with maximum borrowings of up to $20.0 million and was collateralized by substantially all of the assets of the Company. The borrowings under the line of credit bear interest at the bank's prime rate plus 0.50%. If the Company borrowed more than $5.0 million, the Company would have been required to maintain an adjusted quick ratio of 1.5 to 1.0. The Credit Agreement required the Company to comply with various other financial and reporting covenants. As of December 31, 2012, the Company had no borrowings outstanding under this line of credit. The Credit Agreement expired on May 3, 2013 and the Company did not renew it.
	In conjunction with the Loan Agreement disclosed above, the Company issued warrants to SVB, to purchase 29,145 shares of Series C preferred stock, of which 14,573 shares were issued September 25, 2009 and 14,572 shares were issued January 27, 2010. These warrants had an exercise price of $1.7155 per share and expire on September 25, 2016 and January 27, 2017, respectively. During the three months ended December 31, 2013, SVB exercised these warrants and purchased 24,185 shares of the Company’s common stock.
	In conjunction with a lease agreement, the Company issued warrants to purchase 24,838 shares of Series A-2 preferred stock on December 31, 2006. These warrants have an exercise price of $1.2078 per share and expire on December 31, 2018. On August 12, 2013, upon the closing of the Company’s IPO, the warrants were converted from warrants to purchase preferred stock to warrants to purchase common stock and the liability at their then fair value of $0.4 million was reclassified to additional paid-in capital. Prior to the conversion of the warrant liability on August 12, 2013, the Company’s preferred stock warrants were recorded at fair value. Changes in the fair value of the warrants were recorded in “Other income (expense), net” in the consolidated statements of operations. The Company recorded other expense (income) of $0.1 million, $0.1 million and ($18,000) for 2013, 2012 and 2011, respectively, related to changes in the fair value adjustment of these warrants.
	A summary of warrants to purchase common stock outstanding at December 31, 2013 are shown below:
	Issue Date	Security		Expiration		Exercise Price				Number of Shares under Warrants
	31-Dec-06	Common Stock		31-Dec-18		$	1.2078				24,838
	The fair value of the warrants outstanding which, prior to the closing of the Company’s IPO on August 12, 2013, were recorded as liabilities on the consolidated balance sheets and which were remeasured to fair value on a recurring basis at each balance sheet date, were determined using the Black-Scholes option pricing model with the following assumptions:
		Year 2013 Through						Year Ended December 31, 2012
		12-Aug
	Expected term (years)		3.41	-	5.76				4.01	-	6
	Volatility (%)			80						80
	Risk-free interest rate (%)		0.47	-	1.77				0.54	-	0.95
	Dividend yield			—						—
	A summary of the fair value of the warrants outstanding at December 31, 2012 and immediately prior to the closing of the Company’s IPO on August 12, 2013 are shown in the table below (in thousands):
		August 12,				December 31,
		2013				2012
	Warrant (series A-2)	$	203			$	144
	Warrant (series C)		223				157
	Total fair value	$	426			$	301
	The change in total fair value of the convertible preferred stock warrants has been recorded as a component of “Other income (expense)” in the consolidated statements of operations. Once the warrants were converted into warrants for common stock in association with the completion of the Company’s IPO in August 2013, the total fair value of the warrants is no longer subject to remeasurement.

Note_10_Commitments_and_Contin

Note 10 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies Disclosure [Text Block]	'
	10.  Commitments and Contingencies
	Leases
	The Company leases office facilities under various non-cancellable operating leases that expire through October 2016. Rent expense under operating leases totaled $2.2 million, $1.7 million and $0.8 million for the years ended December 31, 2013, 2012 and 2011, respectively. In addition, the Company leases certain equipment and computers under capital lease arrangements that expire at various dates through September 2015.
	Purchase Commitments
	During the normal course of business, to secure adequate ad inventory and impressions for its sales arrangements, the Company enters into agreements with digital media property owners that require purchase of a minimum number of impressions on a monthly or quarterly basis. Purchase commitments as of December 31, 2013 expire on various dates through December 2014.
	Future Payments
	Future minimum payments under these arrangements as of December 31, 2013 are as follows (in thousands):
		Payments Due by Period
		Total		Less Than 1 Year		1 – 3 Years		3 – 5 Years		More Than 5 Years
	Operating lease obligations	$	4,154	$	1,953	$	2,201	$	—	$	—
	Capital lease obligations		388		366		22		—		—
	Traffic acquisition costs and other purchase commitments		2,742		2,742		—		—		—
	Total minimum payments	$	7,284	$	5,061	$	2,223	$	—	$	—
	The contractual commitment amounts in the table above are associated with agreements that are enforceable and legally binding. Obligations under contracts that the Company can cancel without a significant penalty are not included in the table above. The Company has determined its uncertain tax positions as of December 31, 2013 will not result in any additional taxes payable by the Company. As a result, no amounts are shown in the table above relating to the Company’s uncertain tax positions.
	Legal Proceedings
	From time to time the Company may be a party to various litigation matters incidental to the conduct of its business. There is no pending or threatened legal proceeding to which the Company is currently a party that, in management’s opinion, is likely to have a material adverse effect to the Company’s consolidated financial position, results of operations, or cash flows.
	Indemnification Agreements
	In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to customers, vendors, lessors, business partners, and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company or from intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees.
	While matters may arise as a result of claims under the indemnification agreements disclosed above, the Company, at this time, is not aware of claims under indemnification arrangements that could have a material adverse effect to the Company’s consolidated financial position, results of operations, or cash flows.

Note_11_Convertible_Preferred_

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit)	12 Months Ended
	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity Note Disclosure [Text Block]	'
	11.  Convertible Preferred Stock and Stockholders’ Equity (Deficit)
	Initial Public Offering
	On August 12, 2013, the Company closed its IPO in which it sold 5,125,000 shares of common stock at a public offering price of $9.00 per share. The aggregate offering price for shares sold in the offering was approximately $46.1 million. Net proceeds were approximately $40.0 million, after deducting underwriting discounts and commissions of $3.2 million and offering expenses of $2.9 million.
	Convertible Preferred Stock
	Convertible preferred stock as of December 31, 2012 and immediately prior to the IPO consisted of the following:
	Convertible Preferred Stock		Shares Authorized				Shares Issued and Outstanding (1)				Issuance Price Per Share (1)		Carrying Value (2)				Liquidation Preference
	Series A-1			26,165,827				26,165,827			$	0.105	$	1,341,000			$	2,747,000
	Series A-2			22,473,726				22,324,696				0.2013		4,494,000				4,494,000
	Series B			16,134,433				16,134,433				0.5476		8,777,000				8,835,000
	Series C			16,404,591				16,229,717				0.28592		4,546,000				4,640,000
	Series D			24,876,609				24,876,609				1.00496		24,901,000				25,000,000
	Series D-1			24,075,053				24,075,052				1.3137		32,132,000				31,627,000
				130,130,239				129,806,334					$	76,191,000			$	77,343,000
		-1	Amounts are presented without giving effect to the Company’s 1-for-6 reverse stock split that was effective July 24, 2013, as the number of convertible preferred stock shares did not change.
		-2	Amounts are net of issuance costs.
	During 2005 and 2006, the Company issued convertible notes (as amended, the “Notes”) to investors with an aggregate underlying principal value of $1.9 million. In July 2006, the Notes converted all underlying principal of approximately $1.9 million into 18,428,593 shares of Series A-1 convertible preferred stock.
	During July 2006, the Company issued 9,538,416, shares of Series A-1 convertible preferred stock, for $0.105 per share. In December 2010, the Company repurchased 1,801,182 shares of Series A-1 convertible preferred stock for $0.88000 per share.
	During July 2006, the Company issued a total of 22,324,696 shares of Series A-2 convertible preferred stock for $0.20130 per share.
	From September 2007 through July 2008, the Company issued a total of 16,134,433 shares of Series B convertible preferred stock for $0.54760 per share. As part of the issuance, the Company incurred approximately $0.1 million in issuance costs.
	From June 2009 through December 2009, the Company issued a total of 16,229,717 shares of Series C convertible preferred stock for $0.28592 per share. As part of the issuance, the Company incurred approximately $0.1 million in issuance costs.
	During February 2010, the Company issued 24,876,609 shares of Series D convertible preferred stock for $1.00496 per share. As part of the issuance, the Company incurred approximately $0.1 million in issuance costs.
	From September 2010 through December 2010, the Company issued 5,328,462 shares of Series D-1 convertible preferred stock for $1.31370 per share. As part of the issuance, the Company incurred approximately $0.1 million in issuance costs.
	During October 2011, the Company issued an additional 9,134,503 shares of Series D-1 convertible preferred stock for $1.31370 per share. As part of the issuance the Company incurred approximately $0.1 million in issuance costs.
	During April 2012, the Company issued an additional 7,612,087 shares of Series D-1 convertible preferred stock for $1.31370 per share.
	During December 2012, the Company issued 2,000,000 shares of Series D-1 convertible preferred stock valued at $1.67 per share for the acquisition of Crowd Science, Inc.
	Conversion
	Each share of Series A-1, Series A-2, Series B, Series C, Series D, and Series D-1 convertible preferred stock was convertible into common stock at the stockholder's option, at any time after the date of issuance and prior to the Company’s IPO. The number of shares of common stock was determined by dividing the original issuance price for each series by the applicable conversion price for such series in effect at the date of conversion ("Conversion Rate"). The Conversion Rate in effect at any point in time was subject to adjustment for recapitalizations and certain other dilutive issuances. As of December 31, 2012, the Conversion Rate for Series A-1, Series A-2, Series B, Series C, Series D, and Series D-1 convertible preferred stock was $0.10500 per share, $0.20130 per share, $0.51081 per share, $0.28592 per share, $1.001938 per share, and $1.31370 per share, respectively. As of December 31, 2012, each share of preferred stock was convertible into 0.1667 shares of common stock, except for the Series B preferred stock which was convertible into 0.1787 shares of common stock and the Series D preferred stock which was convertible into 0.1672 shares of common stock. Each share of preferred stock automatically converted into shares of common stock, based on the then effective conversion rate for that class, upon the earlier of (i) written request from the holders of 60% of the shares of preferred stock then outstanding, or (ii) upon the consummation of an initial public offering with aggregate gross proceeds of at least $35 million. Upon the closing of our IPO in August 2013, all convertible preferred stock converted into shares of common stock in accordance with the conversion rates existing as of December 31, 2012.
	Dividends
	Holders of Series A-1, Series A-2, Series B, Series C, Series D and Series D-1 preferred stock were entitled to dividends at the annual rate of 8% of the applicable original issue price ($0.10500, $0.20130, $0.54760, $0.28592, $1.00496 and $1.31370 respectively), payable out of funds legally available, prior and in preference to any declaration or payment of any dividend on common stock. Such dividends shall be payable only when, as and if, declared by the board of directors and shall not be cumulative. No dividends on preferred stock were declared prior to the Company’s IPO.
	Voting
	The holders of convertible preferred stock were entitled to the number of votes equal to the number of shares of common stock into which each share of preferred stock could be converted. The holders of shares of the preferred stock were entitled to vote on all matters on which the common stock is entitled to vote. The holders of Series A-1, Series A-2, and Series D, each voting as a separate class, were entitled to elect one member of the board of directors. The holders of common stock and preferred stock, voting together as a single class, were entitled to elect any remaining members of the board of directors.
	Liquidation preference
	In the event of any liquidation, dissolution or winding up of the Company, whether voluntary or involuntary, the holders of the preferred stock would have been entitled to receive, prior and in preference to any distribution of any of the assets of the Company to the holders of any common stock, an amount per share equal to $0.10500, $0.20130, $0.54760, $0.28592, $1.00496 and $1.31370 for Series A-1, A-2, B, C, D and D-1 preferred stock, respectively, plus any declared but unpaid dividends on such shares. Thereafter, the remaining assets of the Company would have been distributed ratably to the holders of common stock.
	Balance Sheet Presentation
	The holders of the outstanding shares of convertible preferred stock had redemption rights in the event of a sale of all or substantially all of the Company's assets, the merger or consolidation of the Company, or upon the sale of more than 50% of the voting power of the Company. As a result, the holders of these preferred shares could have required a change in control that would have triggered the redemption of shares. Accordingly, all shares of convertible preferred stock are presented outside of permanent equity on the consolidated balance sheets as of December 31, 2012.
	Upon the closing of the IPO, all outstanding shares of the Company’s convertible preferred stock automatically converted into 21,840,537 shares of common stock and the carrying value of $76.2 million is included in additional paid-in capital on the consolidated balance sheet as of December 31, 2013.
	Immediately following the closing of the IPO, the Company’s certificate of incorporation was amended to authorize 20,000,000 shares of undesignated preferred stock and 200,000,000 shares of common stock.
	Preferred Stock
	In association with our IPO, our board of directors authorized the Company to issue up to 20,000,000 shares of preferred stock, par value $0.001 per share. As of December 31, 2013 and 2012, no shares of preferred stock were outstanding.
	Warrants
	For information on the Company’s warrants see Note 9.
	Common Stock
	At December 31, 2013 and 2012 there were 31,933,862 and 4,816,863 shares of common stock issued and outstanding, respectively. The following table summarizes common stock activity during the year ended December 31, 2013:
			Number of Shares
	Outstanding at December 31, 2012			4,816,863
	Option exercises			191,773
	Warrant exercise			24,185
	RSUs vesting, net of RSUs withheld for taxes			2,170
	Conversion of convertible preferred stock			21,840,537
	Common stock issued in connection with IPO			5,125,000
	Treasury stock			(66,666	)
	Outstanding at December 31, 2013			31,933,862
	Treasury Stock
	The Company has 66,666 shares of treasury stock related to the acquisition of Crowd Science. Treasury stock is carried at cost and could be re-issued if the Company determined to do so. See Note 3 for additional information on Crowd Science withheld shares.
	Equity Incentive Plans
	The Company’s 2004 Stock Plan (the “2004 Plan”), authorized the Company to grant restricted stock awards or stock options to employees, directors and consultants at prices not less than the fair market value at date of grant for incentive stock options and not less than 85% of fair market value for non-statutory options. Option vesting schedules were determined by the board of directors at the time of issuance and they generally vest at 25% on the first anniversary of the grant (or the employment or service commencement date) and monthly over the next 36 months. Options generally expire ten years from the date of grant unless the optionee is a 10% stockholder, in which case the term will be five years from the date of grant. Unvested options exercised are subject to the Company’s repurchase right. Upon the effective date of the registration statement related to the Company’s IPO, the 2004 Plan was amended to cease the grant of any additional awards thereunder, although the Company will continue to issue common stock upon the exercise of stock options previously granted under the 2004 Plan.
	In July 2013, the Company adopted a 2013 Equity Incentive Plan (the “2013 Plan”) which became effective on August 6, 2013. The 2013 Plan will serve as the successor equity compensation plan to the 2004 Plan. The 2013 Plan will terminate on July 23, 2023. The 2013 Plan provides for the grant of incentive stock options, nonqualified stock options, restricted stock awards, stock appreciation rights, performance stock awards, restricted stock units and stock bonus awards to employees, directors and consultants. Stock options granted must be at prices not less than 100% of the fair market value at date of grant. Option vesting schedules are determined by the Company at the time of issuance and they generally vest at 25% on the first anniversary of the grant (or the employment or service commencement date) and monthly over the next 36 months. Options generally expire ten years from the date of grant unless the optionee is a 10% stockholder, in which case the term will be five years from the date of grant. Unvested options exercised are subject to the Company’s repurchase right. The Company has reserved 2,000,000 shares of its common stock for issuance under the 2013 Plan, and shares reserved for issuance will increase January 1 of each year by the lesser of (i) 5% of the number of shares issued and outstanding on December 31 immediately prior to the date of increase or (ii) such number of shares as may be determined by the board of directors.
	Prior to the IPO, the fair value of the common stock underlying the Company’s stock options was determined by the Company’s board of directors, which intended all options granted to be exercisable at a price per share not less than the per-share fair value of the Company’s common stock underlying those options on the date of grant. The valuations of the Company’s common stock were determined in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation. The assumptions the Company used in the valuation model are based on future expectations combined with management judgment. In the absence of a public trading market, the Company’s board of directors, with input from management, exercised significant judgment and considered numerous objective and subjective factors to determine the fair value of the Company’s common stock as of the date of each option grant. Subsequent to the IPO, the fair value of the common stock underlying the Company’s stock options is the closing price of the Company’s stock as of the grant date.
	The following table summarizes option activity:
			Number of Shares				Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Life		Aggregate Intrinsic Value (2)
			(in thousands)								(years)		(in thousands)
	Balance at December 31, 2010			3,449			$	1.74				7.94	$	9,984
	Granted			1,790			$	4.62
Exercised			(327	)		$	1.8
Canceled and forfeited			(650	)		$	2.4
Balance at December 31, 2011			4,262			$	2.93				8.1	$	6,906
Granted			913			$	4.86
Exercised			(921	)		$	0.78
Canceled and forfeited			(239	)		$	4.44
Balance at December 31, 2012			4,015			$	3.78				7.88	$	8,659
Granted			2,069			$	8.58
Exercised			(192	)		$	1.99
Canceled and forfeited			(179	)		$	5.44
Balance at December 31, 2013			5,713			$	5.53				7.31	$	13,704
Vested and exercisable as of December 31, 2013			2,802			$	3.71				6.29	$	10,607
Vested as of December 31, 2013 and expected to vest thereafter (1)			5,213			$	5.3				7.18	$	13,359
	-1	Options expected to vest reflect an estimated forfeiture rate.
	-2	The aggregate intrinsic value represents the difference between the Company’s estimated fair value of its common stock and the exercise price of outstanding in-the-money options as of those dates.
The weighted average grant date fair value of options granted was $5.89, $3.06 and $2.76 in 2013, 2012 and 2011, respectively. Prior to the Company’s IPO, aggregate intrinsic value represented the difference between the Company’s estimated fair value of its common stock and the exercise price of outstanding, in-the-money options. After the Company’s IPO, aggregate intrinsic value represents the difference between the market value of the Company’s common stock and the exercise price of outstanding, in-the-money options. The total intrinsic value of options exercised was approximately $1.3 million, $3.4 million and $1.3 million for 2013, 2012 and 2011, respectively.
The following table summarizes restricted stock award activity:
		Number of Shares				Weighted Average Fair Value at Grant
Balance at December 31, 2010			22,142			$	0.18
Granted			833			$	4.62
Released			(22,975	)		$	0.36
Balance at December 31, 2011			—			$	—
The Company did not grant any restricted stock in the years ended December 31, 2013 and 2012.
The following table summarizes restricted stock unit activity:
		Number of Shares				Weighted Average Fair Value at Grant				Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (1) (in thousands)
Balance at December 31, 2012			—			$	—				—		—
Granted			41,837			$	8.21
Released			(3,713	)		$	8.89
Balance at December 31, 2013			38,124			$	8.15				2.13	$	284
	-1	The intrinsic value of RSUs is based on the Company’s closing stock price as reported by the New York Stock Exchange on December 31, 2013.
The Company did not grant any RSUs prior to 2013. The total grant date fair value of restricted stock units vested during the year ended December 31, 2013 was $33,000. All of our RSUs that were settled during the year ended December 31, 2013 were net share settled. As such, upon each settlement date, RSUs were withheld to cover the required withholding tax, which is based on the value of the RSU on the settlement date as determined by the closing price of our common stock on the trading day of the settlement date. The remaining amounts are delivered to the recipient as shares of our common stock.
Employee Stock Purchase Plan
In July 2013, the Company adopted a 2013 Employee Stock Purchase Plan (the “2013 Purchase Plan”) that became effective on August 6, 2013. The 2013 Purchase Plan is designed to enable eligible employees to periodically purchase shares of the Company’s common stock at a discount through payroll deductions of up to 15% of their eligible compensation, subject to any plan limitations. At the end of each offering period, employees are able to purchase shares at 85% of the lower of the fair market value of the Company’s common stock on the first trading day of the offering period or on the last day of the offering period. Purchases are accomplished through participation in discrete offering periods. The 2013 Purchase Plan is intended to qualify as an employee stock purchase plan under Section 423 of the Internal Revenue Code. The Company has reserved 500,000 shares of its common stock for issuance under the 2013 Purchase Plan and shares reserved for issuance will increase January 1 of each year by the lesser of (i) a number of shares equal to 1% of the total number of outstanding shares of common stock on December 31 immediately prior to the date of increase or (ii) such number of shares as may be determined by the board of directors. There were no shares purchased by employees under the Company’s ESPP for the year ended December 31, 2013.
The expected term of ESPP shares is the average of the remaining purchase periods under each offering period. The assumptions used to value employee stock purchase rights were as follows:
		Year Ended December 31, 2013
Expected term (years)			0.47
Volatility			80	%
Risk-free interest rate			0.08	%
Dividend yield			—
Shares Reserved for Future Issuance
At December 31, 2013 and 2012, the Company has reserved the following shares of common stock for future issuance:
		December 31,
		2013				2012
Common stock reserved:
Convertible preferred stock, including anti-dilution shares			—				21,840,537
Convertible preferred stock warrants			—				53,983
Common stock options			5,713,106				4,015,088
Restricted stock units			38,124				—
Warrants to purchase common stock			24,838				—
Shares available for future issuance under the 2013 Plan			936,457				824,949
Employee stock purchase plan			500,000				—
			7,212,525				26,734,557
Stock-Based Compensation
The fair value of options granted to employees is estimated on the grant date using the Black-Scholes option valuation model. This valuation model for stock-based compensation expense requires the Company to make assumptions and judgments about the variables used in the calculation including the expected term (weighted-average period of time that the options granted are expected to be outstanding), volatility of the Company’s common stock, a risk-free interest rate, expected dividends, and the estimated forfeitures of unvested stock options. To the extent actual results differ from the estimates, the difference will be recorded as a cumulative adjustment in the period estimates are revised. The Company uses the simplified calculation of expected life, and volatility is based on an average of the historical volatilities of the common stock of a group of entities with characteristics similar to those of the Company. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods corresponding with the expected life of the option. Expected forfeitures are based on the Company’s historical experience. The Company currently has no history or expectation of paying cash dividends on common stock.
The fair value of option grants is determined using the Black-Scholes option valuation model with the following assumptions:
		Years Ended December 31,
		2013						2012				2011
Expected term (years)			5.51	-	6.12				5.6	-	6.07		5.88	-	6.08
Volatility (%)				80					65	-	90		64	-	66
Risk-free interest rate (%)			1.06	-	1.72				0.73	-	1.09		1.03	-	2.84
Dividend yield				—						—				—
Stock Options Granted to Non-employees
For the year ended December 31, 2012, 8,333 options were granted to non-employees. There were no options granted to non-employees during the years ended December 31, 2013 and 2011.
The Company accounts for stock options issued to non-employees in accordance with the provisions of ASC 505-50 using a fair value approach. The measurement of stock based compensation for non-employees is subject to period adjustments as the options vest and the expense is recognized over the period which services are received. The Company believes that the fair value of the stock options is more reliably measurable than the fair value of the services received. The estimated fair value of the stock options granted to non-employees was calculated using the following assumptions:
		Years Ended December 31,
		2013				2012
Expected term (years)			8.42				9.65
Volatility			80	%			80	%
Risk-free interest rate			2.64	%			1.7	%
Dividend yield			—				—
The following table summarizes the effects of stock-based compensation related to vesting stock-based awards included in the consolidated statements of operations (in thousands):
		Years Ended December 31,
		2013				2012				2011
Cost of revenue		$	185			$	128			$	68
Sales and marketing			1,806				1,215				981
Research and development (1)			346				184				65
General and administrative			1,497				515				354
Total stock-based compensation		$	3,834			$	2,042			$	1,468
	-1	Excludes $226,000, $79,000 and $74,000 of stock-based compensation expense that was capitalized as part of internal-use software development costs for the years ended December 31, 2013, 2012 and 2011, respectively.
No income tax benefit has been recognized relating to stock-based compensation expense and no tax benefits have been realized from exercised stock options during the years ended December 31, 2013, 2012 and 2011.As of December 31, 2013, there was $10.8 million of unrecognized compensation cost, adjusted for estimated forfeitures, related to non-vested stock-based awards which will be recognized over a weighted average period of 3.1 years. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures.

Note_12_Net_Income_Loss_Per_Sh

Note 12 - Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share [Text Block]	'
	12.  Net Income (Loss) per Share
	Basic and diluted net income (loss) per common share is presented in conformity with the two-class method required for participating securities. Immediately prior to the closing of the Company’s IPO, all shares of outstanding convertible preferred stock automatically converted into shares of the Company’s common stock. Prior to the conversion of the convertible preferred stock, holders of Series A-1, Series A-2, Series B, Series C, Series D and Series D-1 convertible preferred stock were entitled to receive noncumulative dividends when and if declared at the annual rate of 8% ($0.10500, $0.20130, $0.54760, $0.28592, $1.00496 and $1.31370 per share per annum, respectively) payable prior, and in preference to, any dividends on any shares of the Company’s common stock. In the event a dividend was paid on common stock, the holders of Series A-1, Series A-2, Series B, Series C, Series D and Series D-1 convertible preferred stock were entitled to a proportionate share of any such dividend as if they were holders of common stock (on an as-if converted basis). The holders of convertible preferred stock did not have a contractual obligation to share in the losses of the Company, accordingly, basic and diluted net income (loss) per share has not been computed using the two class method.
	Under the two-class method, net income (loss) attributable to common stockholders is determined by allocating undistributed earnings, calculated as net income (loss) less current period convertible preferred stock non-cumulative dividends, between common stock and convertible preferred stock. In computing diluted net income (loss) attributable to common stockholders, undistributed earnings are re-allocated to reflect the potential impact of dilutive securities. Basic net income (loss) per common share is computed by dividing the net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share attributable to common stockholders is computed by dividing the net income (loss) attributable to common stockholders by the weighted-average number of common shares outstanding, including potential dilutive common shares assuming the dilutive effect of outstanding stock options using the treasury stock method.
	The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share data):
		Years Ended December 31,
		2013		2012			2011
	Numerator:
	Net income (loss)	$	321	$	6,266		$	(11,089	)
	Less: Undistributed earnings allocated to participating securities		—		(6,177	)		—
	Net income (loss) attributable to common stockholders	$	321	$	89		$	(11,089	)
	Denominator:
	Weighted-average shares used in computing net income (loss) per share attributable to common stockholders:
	Basic		15,752		4,716			3,650
	Weighted-average effect of potentially dilutive shares:
	Employee stock options and restricted stock units		1,459		790			—
	Convertible preferred and common stock warrants		39		39			—
	Diluted		17,250		5,545			3,650
	Net income (loss) per share attributable to common stockholders:
	Basic	$	0.02	$	0.02		$	(3.04	)
	Diluted	$	0.02	$	0.02		$	(3.04	)
	The following equity shares were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		As of December 31,
		2013		2012			2011
	Convertible preferred stock		—		21,634			20,239
	Employee stock options and restricted stock units		1,280		205			4,262
	Convertible preferred stock warrants		—		—			54

Note_13_Income_Taxes

Note 13 - Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	13.   Income Taxes
	The Company accounts for income taxes in accordance with authoritative guidance, which requires the use of the asset and liability method. Under this method, deferred income tax assets and liabilities are determined based upon the difference between the consolidated financial statement carrying amounts and the tax basis of assets and liabilities and are measured using the enacted tax rate expected to apply to taxable income in the years in which the differences are expected to be reversed.
	The following table presents domestic and foreign components of income (loss) before income taxes for the periods presented (in thousands):
		Years Ended December 31,
		2013			2012			2011
	Domestic	$	369		$	6,289		$	(8,510	)
	Foreign		622			589			(2,641	)
	Total	$	991		$	6,878		$	(11,151	)
	The components of income tax (expense) benefit are as follows (in thousands):
		Years Ended December 31,
		2013			2012			2011
	Current:
	Federal	$	(106	)	$	(220	)	$	—
	State		(493	)		(190	)		(59	)
	Foreign		(260	)		(146	)		(21	)
	Total		(859	)		(556	)		(80	)
	Deferred:
	Federal		221			—			—
	State		23			—			—
	Foreign		(55	)		(56	)		142
	Total		189			(56	)		142
	Total income tax (expense) benefit	$	(670	)	$	(612	)	$	62
	The primary differences between the effective tax rates and the federal statutory tax rate relates to the valuation allowances on the Company's net operating losses, state income taxes, foreign tax rate differences and non-deductible stock-based compensation expense. The following table presents a reconciliation of the statutory federal rate and the Company's effective tax rate for the periods presented:
		Years Ended December 31,
		2013			2012			2011
	Tax benefit at federal statutory rate		34	%		34	%		34	%
	State, net of federal effect		31.3			1.8			(0.3	)
	Foreign rate differential		(21.4	)		(2.9	)		(8.0	)
	Stock-based compensation		76.5			7.2			(2.4	)
	Change in valuation allowance		(51.4	)		(46.7	)		(27.0	)
	Other non-deductible expenses		(1.2	)		8			(1.7	)
	Other		(0.2	)		7.5			5.9
	Total provision		67.6	%		8.9	%		0.5	%
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The following table presents the significant components of the Company's deferred tax assets and liabilities for the periods presented (in thousands):
		December 31,
		2013			2012
	Deferred tax assets:
	Accruals and reserves	$	1,314		$	764
	Net operating loss carryforwards		4,307			6,002
	Tax credit carryforwards		1,234			684
	Stock-based compensation		1,977			1,085
	Foreign taxes		19			74
	Total deferred tax assets		8,851			8,609
	Fixed assets		(283	)		(373	)
	State taxes		(1,025	)		(765	)
	Purchased intangible assets		(792	)		(1,036	)
	Total deferred tax liabilities		(2,100	)		(2,174	)
	Valuation allowance		(7,524	)		(7,397	)
	Total net deferred tax liabilities	$	(773	)	$	(962	)
	A valuation allowance is provided when it is more likely than not that the deferred tax assets will not be realized. The Company's historical practice was to establish a full valuation allowance to offset domestic net deferred tax assets. As of December 31, 2013 and December 31, 2012, a full valuation allowance on domestic deferred tax assets was placed due to the uncertainty of realizing future tax benefits from its net operating loss carryforwards and other deferred tax assets. The Company’s valuation allowance as of December 31, 2013, 2012 and 2011 was attributable to the uncertainty of realizing future tax benefits from U.S. net operating losses, foreign timing differences and other deferred tax assets. The Company’s valuation allowance increased $0.1 million and $3.9 million in the years ended December 31, 2013 and 2011, respectively, and decreased $2.7 million in the year ended December 31, 2012.
	The federal and state valuation allowance increased by approximately $0.1 million during the year ended December 31, 2013.
	As of December 31, 2013, the Company has U.S. federal net operating loss carryforwards of approximately $8.3 million, expiring beginning in 2025. As of December 31, 2013, the Company has U.S. state and local net operating loss carryforwards of approximately $14.8 million, expiring beginning in 2015.
	As of December 31, 2013, the Company has federal research and development tax credits of approximately $0.7 million, which expires beginning in 2025. As of December 31, 2013, the Company has state research and development tax credits of approximately $0.6 million, which carries forward indefinitely.
	Internal Revenue Code section 382 places a limitation (the “Section 382 Limitation”) on the amount of taxable income that can be offset by net operating carryforwards after a change in control of a loss corporation. Generally, after a change in control, a loss corporation cannot deduct operating loss carryovers in excess of the Section 382 Limitation. Management has determined that any limitation imposed by Section 382 will not have significant impact on the utilization of its net operating loss and credit carryforwards against taxable income in future periods.
	U.S. income and foreign withholding taxes associated with the repatriation of earnings of foreign subsidiaries have not been provided on undistributed earnings of foreign subsidiaries. The Company intends to reinvest theses earnings indefinitely outside the United States. If these earrings were distributed to the U.S. in the form of dividends or otherwise, or if the shares of the relevant subsidiaries were sold or otherwise transferred, the Company may be subject to additional U.S. income taxes (subject to an adjustment for foreign tax credits) and foreign withholding taxes; however, the determination of such amount is not practicable. As of December 31, 2013, the cumulative amount of earnings upon which U.S. income taxes have not been provided for is approximately $1.0 million.
	Uncertain Tax Positions
	A reconciliation of the beginning and ending balances of the unrecognized tax benefits during the years ended December 31, 2013, 2012 and 2011 consist of the following (in thousands):
		Years Ended December 31,
		2013			2012			2011
	Unrecognized benefit – beginning of period	$	246		$	158		$	95
	Gross increases – current year tax provisions		112			88			63
	Unrecognized benefit – end of period	$	358		$	246		$	158
	The entire amount of any unrecognized tax benefits would not impact the Company’s effective tax rate if recognized.
Accrued interest and penalties related to unrecognized tax benefits are classified as income tax expense and were immaterial. The Company files income tax returns in the United States, various states and certain foreign jurisdictions. The tax periods 2009 through 2012 remain open in most jurisdictions. In addition, any tax losses and research and development credit carryforwards that were generated in prior years and carried forward may also be subject to examination by respective taxing authorities. The Company is not currently under examination by income tax authorities in federal, state or other foreign jurisdictions.

Note_14_Related_Party_Transact

Note 14 - Related Party Transactions	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions Disclosure [Text Block]	'
	14.  Related Party Transactions
	During 2013, 2012 and 2011, the Company recorded costs for a digital media property owner that was also an investor in the Company's Series D-1 convertible preferred stock, of $1.3 million, $0.7 million and $0 million, respectively, associated with the acquisition of ad inventory. During 2013, the Company recorded $25 thousand of revenue for this digital media property owner. At December 31, 2013 and 2012, the Company had $0.4 million and $0.2 million, respectively for this related party included in accrued digital media property owner costs in the consolidated financial statements. In addition, the Company has engaged Nielsen for a variety of media services including the provision and evaluation of data and analysis regarding marketing and demographic targets, television viewing behavior, online and Internet usage, ad view counts and TV/Internet share shift analysis. During 2013 and 2012, Mitchell Habib, a member of the Company’s board of directors, was the Chief Operating Officer of Nielsen and prior to that, he served as Executive Vice President of Nielsen’s Global Business Services division. During 2013, 2012 and 2011, the Company recorded costs related to services media provided by Nielsen of $0.8 million, $0.3 million and $0.4 million, respectively. At December 31, 2013 and 2012, the Company had $0.2 million and $0, respectively, payable to the vendor. The Company believes that its transactions with related parties were carried out on an arm's-length basis on terms that are consistent with similar transactions with other vendors.

Note_15_Segments_and_Geographi

Note 15 - Segments and Geographical Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting Disclosure [Text Block]	'
	15.  Segments and Geographical Information
	The Company considers operating segments to be components of the Company in which separate financial information is available that is reviewed regularly by the Company’s chief operating decision maker in deciding how to allocate resources and in evaluating performance. The chief operating decision maker for the Company is the Chief Executive Officer who reviews financial information at a consolidated level for purposes of allocating resources and evaluating financial performance. The Company has only one business activity and one operating and reporting segment. There are no segment managers who are held accountable for operations, operating results or plans for levels or components below the consolidated level. The following table summarizes total revenue generated through sales personnel employed in the respective locations (in thousands):
		Years Ended December 31,
		2013		2012		2011
	Domestic	$	134,846	$	110,872	$	67,883
	International		16,282		5,872		682
	Total revenue	$	151,128	$	116,744	$	68,565
	The Company’s long-lived assets are primarily located in the United States.

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Accounting, Policy [Policy Text Block]	'
	Basis of Presentation
	The Company’s consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (the “SEC”).
	In July 2013, the Company's board of directors and stockholders approved an amendment to the amended and restated certificate of incorporation. The amendment provided for a 1-for-6 reverse stock split of the outstanding common stock, effective July 24, 2013. Accordingly, (i) every six shares of common stock have been combined into one share of common stock, (ii) the number of shares of common stock into which each outstanding option or warrant to purchase common stock is exercisable, as the case may be, have been proportionately decreased on a 1-for-6 basis, (iii) the exercise price for each such outstanding option or warrant to purchase common stock has been proportionately increased on a 6-for-1 basis, and (iv) the conversion ratio for each share of preferred stock outstanding was proportionately reduced on a 1-for-6 basis. All of the share numbers, share prices, and exercise prices have been adjusted within these financial statements, on a retroactive basis, to reflect this 1-for-6 reverse stock split. The Company paid cash in lieu of any fractional shares to which a holder of common stock would otherwise be entitled as a result of the reverse stock split.
	On August 12, 2013, the Company closed the initial public offering (“IPO”) of its common stock pursuant to a registration statement on Form S-1. In the IPO, the Company sold 5,125,000 shares of common stock at a public offering price of $9.00 per share. Net proceeds were approximately $40.0 million, after deducting underwriting discounts and commissions of $3.2 million and offering expenses of $2.9 million. Upon the closing of the IPO, all outstanding shares of the Company’s convertible preferred stock automatically converted into 21,840,537 shares of common stock and all outstanding warrants to purchase convertible preferred stock converted into warrants to purchase 53,983 shares of common stock.
Consolidation, Policy [Policy Text Block]	'
	Basis of Consolidation
	The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates, Policy [Policy Text Block]	'
	Use of Estimates
	The preparation of the Company's consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements and the reported amounts of income and expenses during the reporting period. These estimates are based on information available as of the date of the financial statements; therefore, actual results could differ from management's estimates.
Foreign Currency Transactions and Translations Policy [Policy Text Block]	'
	Foreign Currency Translation and Transactions
	The consolidated financial statements of the Company's foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities of foreign subsidiaries are translated at exchange rates in effect as of the balance sheet date. Revenues and expenses are translated at average exchanges rates in effect during the period. Translation adjustments are recorded within accumulated other comprehensive loss, a separate component of stockholders' equity (deficit), on the consolidated balance sheets. Foreign exchange transaction gains and losses have not been material to the Company's consolidated financial statements for all periods presented.
Cash and Cash Equivalents, Policy [Policy Text Block]	'
	Cash and Cash Equivalents
	To date, the Company invests its excess cash in money market funds. The Company considers all highly liquid financial instruments purchased with original maturities of three months or less to be cash equivalents.
Marketable Securities, Policy [Policy Text Block]	'
	Marketable Securities
	The Company began investing its cash and cash equivalents in marketable securities during the fourth quarter of 2013. Marketable securities are classified as available-for-sale and consist of highly liquid corporate bonds, commercial paper and certificates of deposits that comply with the Company’s minimum credit rating policy. Short-term marketable securities consist of investments with final maturities of at least three months from the date of purchase that the Company intends to own for up to 12 months. Long-term marketable securities consist of investments with final maturities of more than 12 months from the date of purchase that the Company intends to own for more than 12 months, but not more than 24 months. By policy, the final maturity for each security within the portfolio shall not exceed 24 months from the date of purchase and the weighted average maturity of the portfolio shall not exceed 12 months at any point in time. Marketable securities are carried at fair value with unrealized gains and losses, net of taxes, reported as a component of stockholders’ equity (deficit) on the consolidated balance sheets. See Note 4 for additional information regarding the Company’s marketable securities.
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	'
	Restricted Cash
	The lease agreement for the Company's New York office requires a security deposit to be maintained in the form of an unconditional, irrevocable letter of credit issued to the benefit of the landlord. The letter of credit is subject to renewal annually until the lease expires. As of December 31, 2013 and 2012, the Company had letters of credit totaling $0.3 million included in restricted cash in the consolidated financial statements.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	'
	Concentrations and Other Risks
	Financial instruments that subject the Company to a concentration of credit risk consist of cash and cash equivalents, marketable securities and accounts receivable. Cash and cash equivalents are deposited with one domestic and five foreign highly rated financial institutions and cash equivalents are invested in highly rated money market funds. Periodically, such balances may be in excess of federally insured limits. Marketable securities consist of highly liquid corporate bonds, commercial paper and certificates of deposits that comply with the Company’s minimum credit rating policy.
	Except for the Company’s single largest advertising agency customer noted below, credit risk with respect to accounts receivable is dispersed due to the large number of advertising customers. Collateral is not required for accounts receivable. The Company performs ongoing credit evaluations of customers’ financial condition and periodically evaluates its outstanding accounts receivable and establishes an allowance for doubtful accounts based on the Company’s historical experience, the current aging and circumstances of accounts receivable and general industry and economic conditions. Accounts receivable are written off by the Company when it has been determined that all available collection avenues have been exhausted. Historically, write-offs for uncollectible accounts have not been significant. However if circumstances change, higher than expected bad debts may result in future write-offs that are greater than the Company’s estimates.
	One advertising agency customer accounted for 19%, 21% and 15% of the Company’s revenue in 2013, 2012 and 2011, respectively. The same customer accounted for 17% and 27% of the Company’s accounts receivable as of December 31, 2013 and 2012, respectively.
	The following table presents the changes in the allowance for doubtful accounts (in thousands):
		Years Ended December 31,
		2013		2012		2011
	Allowance for doubtful accounts:
	Balance – beginning of period	$	563	$	170	$	14
	Provision for bad debt		493		393		156
	Balance – end of period	$	1,056	$	563	$	170
	The Company did not write-off any doubtful accounts as bad debt during the years ended December 31, 2013, 2012 and 2011.
Property, Plant and Equipment, Policy [Policy Text Block]	'
	Property, Equipment and Software
	Property and equipment are stated at cost, net of accumulated depreciation and amortization. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets, which are generally three to five years. Leasehold improvements are amortized over the shorter of the asset life or remaining lease term.
Internal Use Software, Policy [Policy Text Block]	'
	Internal-Use Software Development Costs
	The Company capitalizes the costs to develop internal-use software when preliminary development efforts are successfully completed, it has authorized and committed project funding, and it is probable that the project will be completed and the software will be used as intended. Such costs are amortized on a straight-line basis over the estimated useful life of the software, which approximates three years. Costs incurred prior to meeting these criteria, together with costs incurred for training and maintenance, are expensed as incurred. Costs incurred for upgrades and enhancements that are expected to result in additional material functionality are capitalized and amortized over the respective estimated useful life.
	The Company capitalized $2.0 million, $0.8 million and $0.8 million of internal-use software costs during the years ended December 31, 2013, 2012 and 2011, respectively, which are included in property, equipment and software on the consolidated balance sheets. Amortization expense totaled approximately $1.0 million, $0.9 million and $0.7 million for the years ended December 31, 2013, 2012 and 2011, respectively.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	'
	Impairment of Long-lived Assets
	The Company evaluates its long-lived assets for impairment when circumstances indicate the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset. If such assets are considered to be impaired, the impairment to be recognized is measured as the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported as a separate caption at the lower of the carrying amount or fair value less costs to sell. There were no impairment charges recorded or changes in estimated useful lives during years ended December 31, 2013, 2012 and 2011.
Deferred Charges, Policy [Policy Text Block]	'
	Deferred Offering Costs
	Deferred offering costs consisted primarily of direct incremental costs related to the Company's IPO. Upon completion of the IPO in August 2013, these amounts were offset against the proceeds of the offering. Consequently, there were no deferred offering costs included on the Company’s consolidated balance sheets as of December 31, 2013. There were $0.2 million of deferred offering costs included in “Deposits and other assets” on the consolidated balance sheets as of December 31, 2012.
Deferred Rent [Policy Text Block]	'
	Deferred Rent
	The Company leases facilities worldwide under non-cancelable operating leases that expire through October 2016. These leases contain various renewal options. The Company recognizes rent holidays and escalating rent provisions on a straight-line basis over the term of the lease. The Company's deferred rent liability related to these facilities was approximately $0.2 million at both December 31, 2013 and 2012, which are included in “Accrued liabilities” and “Other long-term liabilities” on the consolidated balance sheets.
Revenue Recognition, Policy [Policy Text Block]	'
	Revenue Recognition
	The Company's revenue is principally derived from advertising services measured by the number of advertising impressions displayed on digital media properties owned and controlled by third-party digital media property owners and primarily priced on a cost per thousand impressions ("CPM") basis. The Company recognizes revenue when: (1) persuasive evidence exists of an arrangement with the customer reflecting the terms and conditions under which products or services will be provided; (2) delivery has occurred or services have been provided; (3) the fee is fixed or determinable; and (4) collection is reasonably assured. For all revenue transactions, the Company considers a signed agreement, a binding insertion order or other similar documentation to be persuasive evidence of an arrangement. Arrangements for these services generally have a term of up to three months. In some cases the term may be up to one year or more.
	In the normal course of business, the Company acts as a facilitator in executing transactions with third parties. The determination of whether revenue should be reported on a gross or net basis is based on an assessment of whether the Company is acting as the principal or an agent in the transaction. In determining whether the Company acts as the principal or an agent, the Company follows the accounting guidance for principal-agent considerations. While none of the factors identified in this guidance is individually considered presumptive or determinative, because the Company is the primary obligor and is responsible for (i) identifying and contracting with third-party advertisers, (ii) establishing the selling prices of the advertisements sold, (iii) performing all billing and collection activities including retaining credit risk and (iv) bearing sole responsibility for fulfillment of the advertising, which may also include committing to buy advertising inventory in advance, the Company acts as the principal in these arrangements and therefore reports revenue earned and costs incurred on a gross basis.
	The Company recognizes revenue based on delivery information from a combination of third-party reporting and the Company's proprietary campaign tracking systems.
Multiple Element Arrangements [Policy Text Block]	'
	Multiple-element Arrangements
	The Company enters into arrangements with customers to sell advertising packages that include different media placements or ad services that are delivered at the same time, or within close proximity of one another.
	Beginning on January 1, 2011, the Company adopted new authoritative guidance on multiple-element arrangements, using the prospective method for all arrangements entered into or materially modified from the date of adoption. Under this new guidance, at the inception of an arrangement, the Company allocates arrangement consideration in multiple-deliverable revenue arrangements to all deliverables, based on the relative selling price method in accordance with the selling price hierarchy, which includes: (1) vendor-specific objective evidence ("VSOE") if available; (2) third-party evidence ("TPE") if VSOE is not available; and (3) best estimate of selling price ("BESP") if neither VSOE nor TPE is available.
	VSOE—The Company evaluates VSOE based on its historical pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, the Company requires that a substantial majority of the standalone selling prices for these services fall within a reasonably narrow pricing range. The Company historically has not entered into a large volume of single-element arrangements, so it has not been able to establish VSOE for any of its advertising products.
	TPE—When VSOE cannot be established for deliverables in multiple element arrangements, the Company applies judgment with respect to whether it can establish a selling price based on TPE. TPE is determined based on competitor prices for similar deliverables when sold separately. Generally, the Company's go-to-market strategy differs from that of its peers and its offerings contain a significant level of differentiation such that the comparable pricing of services cannot be obtained. Furthermore, the Company is unable to reliably determine what similar competitor services' selling prices are on a standalone basis. As a result, the Company has not been able to establish selling price based on TPE.
	BESP—When it is unable to establish selling price using VSOE or TPE, the Company uses BESP in its allocation of arrangement consideration. The objective of BESP is to determine the price at which the Company would transact a sale if the service were sold on a standalone basis. BESP is generally used to allocate the selling price to deliverables in the Company's multiple-element arrangements. The Company determines BESP for deliverables by considering multiple factors including, but not limited to, prices it charges for similar offerings, class of advertiser, size of transaction, seasonality, observed pricing trends, available online inventory, industry pricing strategies, market conditions and competitive landscape. The Company limits the amount of allocable arrangement consideration to amounts that are fixed or determinable and that are not contingent on future performance or future deliverables. The Company periodically reviews its BESP. Changes in assumptions or judgments or changes to the elements in the arrangement could cause a material increase or decrease in the amount of revenue that the Company reports in a particular period.
	The Company recognizes the relative fair value of the media placements or ad services as they are delivered assuming all other revenue recognition criteria are met. Deferred revenue is comprised of contractual billings in excess of recognized revenue and payments received in advance of revenue recognition.
Cost of Sales, Policy [Policy Text Block]	'
	Cost of revenue
	Cost of revenue consists of amounts incurred with digital media property owners that are directly related to a revenue-generating event, direct labor costs, amortization of revenue-producing acquired technologies, Internet access costs and depreciation expense. The Company incurs costs with digital media property owners in the period the advertising impressions are delivered or in limited circumstances, based on minimum guaranteed number of impressions. Such amounts incurred are classified as cost of revenue in the corresponding period in which the revenue is recognized in the consolidated statements of operations.
Advertising Costs, Policy [Policy Text Block]	'
	Advertising expense
	The Company's advertising costs are expensed as incurred. The Company incurred approximately $1.5 million, $0.6 million and $0.8 million in advertising expenses for the years ended December 31, 2013, 2012 and 2011, respectively.
Comprehensive Income, Policy [Policy Text Block]	'
	Comprehensive Income (Loss)
	Comprehensive income (loss) consists of net income (loss) and changes in accumulated other comprehensive income (loss), which are primarily the result of foreign currency translation adjustments and unrealized gains or losses on marketable securities, net of tax.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	'
	Stock-based Compensation
	The Company measures compensation expense for all stock-based payment awards, including stock options granted to employees, directors and non-employees based on the estimated fair values on the date of the grant. The fair value of each stock option granted is estimated using the Black-Scholes option valuation model. Stock-based compensation expense related to restricted stock units (“RSUs”) is based on the grant date fair value of the RSUs. Stock-based compensation is recognized on a straight-line basis over the requisite service period.
	Stock-based compensation expense is recorded net of estimated forfeitures in our consolidated statements of income and as such is recorded for only those share-based awards that we expect to vest. We estimate the forfeiture rate based on historical forfeitures of equity awards and adjust the rate to reflect changes in facts and circumstances, if any. We will revise our estimated forfeiture rate if actual forfeitures differ from our initial estimates.
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	'
	Goodwill
	Goodwill is not amortized, but is tested for impairment at least annually or as circumstances indicate the value may no longer be recoverable. The Company evaluates goodwill for impairment annually in the fourth quarter of its fiscal year or, whenever events or changes in circumstances indicate the carrying value of goodwill may not be recoverable. Triggering events that may indicate impairment include, but are not limited to, a significant adverse change in customer demand or business climate that could affect the value of goodwill or a significant decrease in expected cash flows. Through December 31, 2013, no impairment of goodwill has been identified.
	In September 2011, the Financial Accounting Standards Board ("FASB") issued an accounting standard update that permits entities to first assess qualitative factors to determine whether it is more likely than not (a likelihood of more than 50%) that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. This new guidance was adopted by the Company on January 1, 2012 on a prospective basis and the adoption of did not materially impact the Company’s consolidated financial statements. The Company has elected to first assess qualitative factors to determine whether it is necessary to perform the two-step annual goodwill impairment test in 2013 and 2012. The Company assessed qualitative factors including its market capitalization, stock price, industry and market conditions, cost factors and cash flows and concluded that it was more likely than not that the fair value of its sole reporting unit is greater than the carrying value of goodwill.
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	'
	Intangible Assets
	Acquired intangible assets consist of acquired customer relationships, developed technology and non-compete agreements. Acquired intangible assets are recorded at fair value, net of accumulated amortization. Intangible assets are amortized on a straight-line basis over their estimated useful lives. The Company reviews identifiable amortizable intangible assets to be held and used for impairment whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. Determination of recoverability is based on the lowest level of identifiable estimated undiscounted cash flows resulting from use of the asset and its eventual disposition. Measurement of any impairment loss is based on the excess of the carrying value of the asset over its fair value. Through December 31, 2013, no impairment of intangibles has been identified.
Stockholders' Equity Note, Redeemable Preferred Stock, Issue, Policy [Policy Text Block]	'
	Preferred Stock Warrant Liability
	Freestanding warrants related to shares of the Company’s preferred stock that were contingently redeemable were classified as a liability on the Company's consolidated balance sheet as of December 31, 2012. The convertible preferred stock warrants were subject to re-measurement at each balance sheet date up to the date of our IPO on August 7, 2013, and any changes in fair value were recognized as a component of “Other income (expense), net.” As of August 7, 2013, all redeemable convertible preferred stock warrants were converted into warrants to purchase common stock and the liability of $0.4 million was reclassified to additional paid-in capital.
Income Tax, Policy [Policy Text Block]	'
	Income Taxes
	The Company records income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Company's consolidated financial statements or income tax returns. In estimating future tax consequences, expected future events other than enactments or changes in the tax law or rates are considered. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized.
	The Company operates in various tax jurisdictions and is subject to audit by various tax authorities. The Company provides for tax contingencies whenever it is deemed probable that a tax asset has been impaired or a tax liability has been incurred for events such as tax claims or changes in tax laws. Tax contingencies are based upon their technical merits, relative tax law, and the specific facts and circumstances as of each reporting period. Changes in facts and circumstances could result in material changes to the amounts recorded for such tax contingencies.
	The Company records uncertain tax positions in accordance with accounting standards on the basis of a two-step process whereby (1) a determination is made as to whether it is more likely than not that the tax positions will be sustained based on the technical merits of the position and (2) for those tax positions that meet the more-likely-than-not recognition threshold the Company recognizes the largest amount of tax benefit that is greater than 50% likely to be realized upon ultimate settlement with the related tax authority.
New Accounting Pronouncements, Policy [Policy Text Block]	'
	Recently Issued Accounting Standards
	Under the Jumpstart Our Business Startups Act (“JOBS”) Act, the Company meets the definition of an “emerging growth company.” The Company has irrevocably elected to opt out of the extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act, and, therefore, we will be subject to the same new or revised accounting standards as other public companies that are not “emerging growth companies.”
	In February 2013, the FASB issued Accounting Standards Updates (“ASU”) 2013-2, Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income (ASU 2013-2), to improve the reporting of reclassifications out of accumulated other comprehensive income. ASU 2013-2 requires presentation, either on the face of the financial statements or in the notes, of amounts reclassified out of accumulated other comprehensive income by component and by net income line item. ASU 2013-2 is effective prospectively for fiscal years, and interim periods within those years, beginning after December 15, 2012. The Company adopted ASU 2013-2 in the first quarter of fiscal 2014. The adoption of ASU 2013-2 did not have a significant impact on the Company's consolidated financial statements.
	In July 2013, the FASB issued amended standards that provided explicit guidance on the financial statement presentation of an unrecognized tax benefit when a net operating loss carryforward or a tax credit carryforward exists. 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 new guidance became effective on January 1, 2014 and should be applied prospectively to unrecognized tax benefits that exist at the effective date with retrospective application permitted. The Company is currently assessing the impact of this new guidance.

Note_2_Summary_of_Significant_1

Note 2 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Allowance for Credit Losses on Financing Receivables [Table Text Block]	'
		Years Ended December 31,
		2013		2012		2011
	Allowance for doubtful accounts:
	Balance – beginning of period	$	563	$	170	$	14
	Provision for bad debt		493		393		156
	Balance – end of period	$	1,056	$	563	$	170

Note_3_Acquisitions_Tables

Note 3 - Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Note 3 - Acquisitions (Tables) [Line Items]	'
Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]	'
	Intangible Type	Valuation Type		Useful Life (years)
	Developed Technology	Relief from royalty method		3
	Customer Lists	Excess earnings method		5
	Non-Compete	With and without method under the income approach		2
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]	'
		Maximum Payout			Achievement			Actual Payout
	Revenue target	$	1,200			50	%	$	600
	Hiring targets		500			100	%		500
		$	1,700					$	1,100
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	'
	Intangible Type	Valuation Type		Useful Life (years)
	Developed Technology	Discounted cash flow method		4
Appealing Media [Member]	'
Note 3 - Acquisitions (Tables) [Line Items]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	'
		Fair Value
	Fair value of purchase consideration:
	Cash consideration	$	1,000
	Cash escrow account		300
	Total purchase consideration	$	1,300
	Fair Value
	Fair value of net assets acquired:
	Cash	$	21
	Other current assets		168
	Property and equipment		48
	Developed technology		350
	Customer relationships		104
	Non-compete agreement		53
	Goodwill		889
	Total assets acquired		1,633
	Total liabilities assumed		333
	Net assets acquired	$	1,300
Business Acquisition, Pro Forma Information [Table Text Block]	'
		Pro Forma for the Year Ended December 31, 2011
	Revenue	$	68,940
	Net income	$	(11,186	)
	Basic and diluted net loss per share attributable to common stockholders	$	(0.51	)
Crowd Science Inc [Member]	'
Note 3 - Acquisitions (Tables) [Line Items]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	'
		Fair Value
	Fair value of purchase consideration:
	Cash consideration	$	1,033
	Cash escrow account		49
	2,000,000 Series D-1 preferred stock shares		3,319
	Series D-1 issuance costs		21
	Total purchase consideration	$	4,422
	Fair Value
	Fair value of net assets acquired:
	Cash	$	259
	Accounts receivable		163
	Other current assets		63
	Property and equipment		14
	Other assets		30
	Developed technology		2,600
	Goodwill		3,013
	Total assets acquired		6,142
	Accounts payable and accruals		461
	Deferred revenue		223
	Deferred tax liability		1,036
	Total liabilities assumed		1,720
	Net assets acquired	$	4,422
Business Acquisition, Pro Forma Information [Table Text Block]	'
		Pro Forma for the Year Ended December 31, 2012			Pro Forma for the Year Ended December 31, 2011
	Revenue	$	117,441		$	69,146
	Net income	$	2,676		$	(15,523	)
	Basic and diluted net income (loss) per share attributable to common stockholders	$	0		$	(4.25	)

Note_4_Cash_Cash_Equivalents_a1

Note 4 - Cash, Cash Equivalents and Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Cash and Cash Equivalents [Abstract]	'
Cash, Cash Equivalents and Investments [Table Text Block]	'
		Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	December 31, 2013:
	Cash	$	24,255	$	—	$	—		$	24,255
	Cash equivalents:
	Money market funds		18,371		—		—			18,371
	Total cash and cash equivalents		42,626		—		—			42,626
	Marketable securities:
	Corporate bonds		17,892		3		(10	)		17,885
	Commercial paper		2,396		—		—			2,396
	Certificates of deposit		1,200		—		—			1,200
	Total marketable securities		21,488		3		(10	)		21,481
	Total cash, cash equivalents and marketable securities	$	64,114	$	3	$	(10	)	$	64,107
		Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
	December 31, 2012:
	Cash	$	14,401	$	—	$	—		$	14,401
	Cash equivalents:
	Money market funds		13,508		—		—			13,508
	Total cash and cash equivalents	$	27,909	$	—	$	—		$	27,909

Note_5_Fair_Value_of_Financial1

Note 5 - Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	'
		Fair Value Measurements at December 31, 2013
		Level 1			Level 2		Level 3			Total
	Money market funds	$	18,371		$	–	$	–		$	18,371
	Marketable securities:
	Corporate bonds	$	–		$	17,885	$	–		$	17,885
	Commercial paper					2,396					2,396
	Certificates of deposit					1,200					1,200
	Total marketable securities	$	–		$	21,481	$	–		$	21,481
		Fair Value Measurements at December 31, 2012
		Level 1			Level 2		Level 3			Total
	Money market funds	$	13,508		$	–	$	–		$	13,508
	Warrant liability	$	–		$	–	$	301		$	301
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	'
		Years Ended December 31,
		2013			2012		2011
	Beginning balance	$	301		$	199	$	217
	Change in fair value recorded in other income (expense), net		125			102		(18	)
	Reclassification of warrants to additional paid-in capital in connection with the IPO(1)		(426	)		–		–
	Ending Balance	$	–		$	301	$	199

Note_6_Property_Equipment_and_1

Note 6 - Property, Equipment and Software (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
		December 31,
		2013			2012
	Office furniture and fixtures	$	494		$	464
	Equipment and computers		7,082			5,069
	Leasehold improvements		1,679			1,573
	Software		1,305			1,080
	Internally developed software costs		5,544			3,564
	Total property, equipment and software		16,104			11,750
	Less: accumulated depreciation and amortization		(9,494	)		(6,199	)
	Property, equipment and software, net	$	6,610		$	5,551
Schedule of Capital Leased Assets [Table Text Block]	'
		December 31,
		2013			2012
	Gross assets under capital leases	$	1,910		$	1,910
	Less: accumulated depreciation		(1,597	)		(960	)
	Net assets under capital leases	$	313		$	950

Note_7_Goodwill_and_Intangible1

Note 7 - Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Finite-Lived Intangible Assets [Table Text Block]	'
		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted-Average Remaining Life (years)
	December 31, 2013:
	Developed technology	$	2,950	$	(951	)	$	1,999		2.7
	Customer relationships		104		(54	)		50		2.4
	Non-compete agreement		53		(53	)		-		-
		$	3,107	$	(1,058	)	$	2,049
	December 31, 2012:
	Developed technology	$	2,950	$	(185	)	$	2,765		3.7
	Customer relationships		104		(33	)		71		3.4
	Non-compete agreement		53		(42	)		11		0.4
		$	3,107	$	(260	)	$	2,847
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	Years ending December 31,:	Amount
	2014	$	719
	2015		671
	2016		659
	Total future amortization expense	$	2,049

Note_8_Accrued_Liabilities_Tab

Note 8 - Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2013
Payables and Accruals [Abstract]	'
Schedule of Accrued Liabilities [Table Text Block]	'
		December 31,
		2013		2012
	Accrued compensation	$	5,727	$	3,554
	Accrued vacation and other employee benefits		3,081		1,673
	Accrued customer incentives		1,540		-
	Accrued taxes		559		665
	Other accrued expenses		1,827		1,327
	Total accrued liabilities	$	12,734	$	7,219

Note_9_Borrowings_Tables

Note 9 - Borrowings (Tables)	12 Months Ended
	Dec. 31, 2013
Note 9 - Borrowings (Tables) [Line Items]	'
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]	'
	Issue Date	Security		Expiration		Exercise Price				Number of Shares under Warrants
	31-Dec-06	Common Stock		31-Dec-18		$	1.2078				24,838
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	'
		Years Ended December 31,
		2013						2012				2011
	Expected term (years)		5.51	-	6.12				5.6	-	6.07		5.88	-	6.08
	Volatility (%)			80					65	-	90		64	-	66
	Risk-free interest rate (%)		1.06	-	1.72				0.73	-	1.09		1.03	-	2.84
	Dividend yield			—						—				—
Fair Value of Warrants Outstanding [Table Text Block]	'
		August 12,				December 31,
		2013				2012
	Warrant (series A-2)	$	203			$	144
	Warrant (series C)		223				157
	Total fair value	$	426			$	301
Warrants To Purchase Common Stock [Member]	'
Note 9 - Borrowings (Tables) [Line Items]	'
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	'
		Year 2013 Through						Year Ended December 31, 2012
		12-Aug
	Expected term (years)		3.41	-	5.76				4.01	-	6
	Volatility (%)			80						80
	Risk-free interest rate (%)		0.47	-	1.77				0.54	-	0.95
	Dividend yield			—						—

Note_10_Commitments_and_Contin1

Note 10 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]	'
		Payments Due by Period
		Total		Less Than 1 Year		1 – 3 Years		3 – 5 Years		More Than 5 Years
	Operating lease obligations	$	4,154	$	1,953	$	2,201	$	—	$	—
	Capital lease obligations		388		366		22		—		—
	Traffic acquisition costs and other purchase commitments		2,742		2,742		—		—		—
	Total minimum payments	$	7,284	$	5,061	$	2,223	$	—	$	—

Note_11_Convertible_Preferred_1

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Tables)	12 Months Ended
	Dec. 31, 2013
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Tables) [Line Items]	'
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]	'
		Number of Shares
	Outstanding at December 31, 2012		4,816,863
	Option exercises		191,773
	Warrant exercise		24,185
	RSUs vesting, net of RSUs withheld for taxes		2,170
	Conversion of convertible preferred stock		21,840,537
	Common stock issued in connection with IPO		5,125,000
	Treasury stock		(66,666	)
	Outstanding at December 31, 2013		31,933,862
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
		Number of Shares				Weighted Average Fair Value at Grant				Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (1) (in thousands)
	Balance at December 31, 2012		—			$	—				—		—
	Granted		41,837			$	8.21
	Released		(3,713	)		$	8.89
	Balance at December 31, 2013		38,124			$	8.15				2.13	$	284
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	'
		Year Ended December 31, 2013
	Expected term (years)		0.47
	Volatility		80	%
	Risk-free interest rate		0.08	%
	Dividend yield		—
		Years Ended December 31,
		2013				2012
	Expected term (years)		8.42				9.65
	Volatility		80	%			80	%
	Risk-free interest rate		2.64	%			1.7	%
	Dividend yield		—				—
Schedule Of Common Stock Reserved For Future Issuance [Table Text Block]	'
		December 31,
		2013				2012
	Common stock reserved:
	Convertible preferred stock, including anti-dilution shares		—				21,840,537
	Convertible preferred stock warrants		—				53,983
	Common stock options		5,713,106				4,015,088
	Restricted stock units		38,124				—
	Warrants to purchase common stock		24,838				—
	Shares available for future issuance under the 2013 Plan		936,457				824,949
	Employee stock purchase plan		500,000				—
			7,212,525				26,734,557
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	'
		Years Ended December 31,
		2013						2012				2011
	Expected term (years)		5.51	-	6.12				5.6	-	6.07		5.88	-	6.08
	Volatility (%)			80					65	-	90		64	-	66
	Risk-free interest rate (%)		1.06	-	1.72				0.73	-	1.09		1.03	-	2.84
	Dividend yield			—						—				—
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	'
		Years Ended December 31,
		2013				2012				2011
	Cost of revenue	$	185			$	128			$	68
	Sales and marketing		1,806				1,215				981
	Research and development (1)		346				184				65
	General and administrative		1,497				515				354
	Total stock-based compensation	$	3,834			$	2,042			$	1,468
Equity Incentive Plan [Member]	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Tables) [Line Items]	'
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
		Number of Shares				Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Life		Aggregate Intrinsic Value (2)
		(in thousands)								(years)		(in thousands)
	Balance at December 31, 2010		3,449			$	1.74				7.94	$	9,984
	Granted		1,790			$	4.62
	Exercised		(327	)		$	1.8
	Canceled and forfeited		(650	)		$	2.4
	Balance at December 31, 2011		4,262			$	2.93				8.1	$	6,906
	Granted		913			$	4.86
	Exercised		(921	)		$	0.78
	Canceled and forfeited		(239	)		$	4.44
	Balance at December 31, 2012		4,015			$	3.78				7.88	$	8,659
	Granted		2,069			$	8.58
	Exercised		(192	)		$	1.99
	Canceled and forfeited		(179	)		$	5.44
	Balance at December 31, 2013		5,713			$	5.53				7.31	$	13,704
	Vested and exercisable as of December 31, 2013		2,802			$	3.71				6.29	$	10,607
	Vested as of December 31, 2013 and expected to vest thereafter (1)		5,213			$	5.3				7.18	$	13,359
Restricted Stock Award Activity [Member]	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Tables) [Line Items]	'
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
		Number of Shares				Weighted Average Fair Value at Grant
	Balance at December 31, 2010		22,142			$	0.18
	Granted		833			$	4.62
	Released		(22,975	)		$	0.36
	Balance at December 31, 2011		—			$	—
Convertible Preferred Stock [Member]	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Tables) [Line Items]	'
Schedule of Stock by Class [Table Text Block]	'
	Convertible Preferred Stock	Shares Authorized				Shares Issued and Outstanding (1)				Issuance Price Per Share (1)		Carrying Value (2)				Liquidation Preference
	Series A-1		26,165,827				26,165,827			$	0.105	$	1,341,000			$	2,747,000
	Series A-2		22,473,726				22,324,696				0.2013		4,494,000				4,494,000
	Series B		16,134,433				16,134,433				0.5476		8,777,000				8,835,000
	Series C		16,404,591				16,229,717				0.28592		4,546,000				4,640,000
	Series D		24,876,609				24,876,609				1.00496		24,901,000				25,000,000
	Series D-1		24,075,053				24,075,052				1.3137		32,132,000				31,627,000
			130,130,239				129,806,334					$	76,191,000			$	77,343,000

Note_12_Net_Income_Loss_Per_Sh1

Note 12 - Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
		Years Ended December 31,
		2013		2012			2011
	Numerator:
	Net income (loss)	$	321	$	6,266		$	(11,089	)
	Less: Undistributed earnings allocated to participating securities		—		(6,177	)		—
	Net income (loss) attributable to common stockholders	$	321	$	89		$	(11,089	)
	Denominator:
	Weighted-average shares used in computing net income (loss) per share attributable to common stockholders:
	Basic		15,752		4,716			3,650
	Weighted-average effect of potentially dilutive shares:
	Employee stock options and restricted stock units		1,459		790			—
	Convertible preferred and common stock warrants		39		39			—
	Diluted		17,250		5,545			3,650
	Net income (loss) per share attributable to common stockholders:
	Basic	$	0.02	$	0.02		$	(3.04	)
	Diluted	$	0.02	$	0.02		$	(3.04	)
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	'
		As of December 31,
		2013		2012			2011
	Convertible preferred stock		—		21,634			20,239
	Employee stock options and restricted stock units		1,280		205			4,262
	Convertible preferred stock warrants		—		—			54

Note_13_Income_Taxes_Tables

Note 13 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	'
		Years Ended December 31,
		2013			2012			2011
	Domestic	$	369		$	6,289		$	(8,510	)
	Foreign		622			589			(2,641	)
	Total	$	991		$	6,878		$	(11,151	)
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	'
		Years Ended December 31,
		2013			2012			2011
	Current:
	Federal	$	(106	)	$	(220	)	$	—
	State		(493	)		(190	)		(59	)
	Foreign		(260	)		(146	)		(21	)
	Total		(859	)		(556	)		(80	)
	Deferred:
	Federal		221			—			—
	State		23			—			—
	Foreign		(55	)		(56	)		142
	Total		189			(56	)		142
	Total income tax (expense) benefit	$	(670	)	$	(612	)	$	62
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	'
		Years Ended December 31,
		2013			2012			2011
	Tax benefit at federal statutory rate		34	%		34	%		34	%
	State, net of federal effect		31.3			1.8			(0.3	)
	Foreign rate differential		(21.4	)		(2.9	)		(8.0	)
	Stock-based compensation		76.5			7.2			(2.4	)
	Change in valuation allowance		(51.4	)		(46.7	)		(27.0	)
	Other non-deductible expenses		(1.2	)		8			(1.7	)
	Other		(0.2	)		7.5			5.9
	Total provision		67.6	%		8.9	%		0.5	%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	'
		December 31,
		2013			2012
	Deferred tax assets:
	Accruals and reserves	$	1,314		$	764
	Net operating loss carryforwards		4,307			6,002
	Tax credit carryforwards		1,234			684
	Stock-based compensation		1,977			1,085
	Foreign taxes		19			74
	Total deferred tax assets		8,851			8,609
	Fixed assets		(283	)		(373	)
	State taxes		(1,025	)		(765	)
	Purchased intangible assets		(792	)		(1,036	)
	Total deferred tax liabilities		(2,100	)		(2,174	)
	Valuation allowance		(7,524	)		(7,397	)
	Total net deferred tax liabilities	$	(773	)	$	(962	)
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	'
		Years Ended December 31,
		2013			2012			2011
	Unrecognized benefit – beginning of period	$	246		$	158		$	95
	Gross increases – current year tax provisions		112			88			63
	Unrecognized benefit – end of period	$	358		$	246		$	158

Note_15_Segments_and_Geographi1

Note 15 - Segments and Geographical Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	'
		Years Ended December 31,
		2013		2012		2011
	Domestic	$	134,846	$	110,872	$	67,883
	International		16,282		5,872		682
	Total revenue	$	151,128	$	116,744	$	68,565

Note_1_Organization_and_Descri1

Note 1 - Organization and Description of Business (Details) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended
	Aug. 12, 2013	Jul. 31, 2013	Dec. 31, 2013
Disclosure Text Block [Abstract]	'	'	'
Stockholders' Equity, Reverse Stock Split	'	'1-for-6	'
Stock Issued During Period, Shares, New Issues	5,125,000	'	5,125,000
Sale of Stock, Price Per Share	$9	'	'
Proceeds from Issuance Initial Public Offering	$40,000,000	'	$39,976,000
Fees and Commissions	3,200,000	'	'
Payments of Stock Issuance Costs	$2,900,000	'	'
Convertible Preferred Stock, Shares Issued upon Conversion	21,840,537	'	'
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	53,983	'	'

Note_2_Summary_of_Significant_2

Note 2 - Summary of Significant Accounting Policies (Details) (USD $)	0 Months Ended		1 Months Ended		12 Months Ended
	Aug. 07, 2013	Aug. 12, 2013	Jan. 27, 2010	Sep. 25, 2009	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Letters of Credit Outstanding, Amount	'	'	'	'	$300,000		$300,000		'
Capitalized Computer Software, Additions	'	'	'	'	-1,752,000		-747,000		-739,000
Amortization of Intangible Assets	'	'	'	'	800,000		200,000		100,000
Deferred Finance Costs, Current, Net	'	'	'	'	0		200,000		'
Deferred Rent Credit, Noncurrent	'	'	'	'	200,000		200,000		'
Advertising Expense	'	'	'	'	1,500,000		600,000		800,000
Impairment of Intangible Assets (Excluding Goodwill)	'	'	'	'	0		'		'
Adjustments to Additional Paid in Capital, Warrant Issued	400,000	400,000	14,572	14,573	-426,000	[1]	'	[1]	'	[1]
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]	'	'	'	'	'		'		'
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Concentration Risk, Percentage	'	'	'	'	19.00%		21.00%		15.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]	'	'	'	'	'		'		'
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Concentration Risk, Percentage	'	'	'	'	17.00%		27.00%		'
Computer Software, Intangible Asset [Member]	'	'	'	'	'		'		'
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Finite-Lived Intangible Asset, Useful Life	'	'	'	'	'3 years		'		'
Internal Use Software Development Costs [Member]	'	'	'	'	'		'		'
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Capitalized Computer Software, Additions	'	'	'	'	2,000,000		800,000		800,000
Amortization of Intangible Assets	'	'	'	'	$1,000,000		$900,000		$700,000
Minimum [Member]	'	'	'	'	'		'		'
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Property, Plant and Equipment, Useful Life	'	'	'	'	'3 years		'		'
Maximum [Member]	'	'	'	'	'		'		'
Note 2 - Summary of Significant Accounting Policies (Details) [Line Items]	'	'	'	'	'		'		'
Property, Plant and Equipment, Useful Life	'	'	'	'	'5 years		'		'
[1]	Upon the closing of the IPO, all outstanding warrants to purchase convertible preferred stock converted into warrants to purchase shares of common stock.Consequently, the Company reclassified the balance of these warrants to additional paid-in capital

Note_2_Summary_of_Significant_3

Note 2 - Summary of Significant Accounting Policies (Details) - Changes in Allowance for Doubtful Accounts (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts:	'	'	'
Balance – beginning of period	$563	$170	$14
Provision for bad debt	493	393	156
Balance – end of period	$1,056	$563	$170

Note_3_Acquisitions_Details

Note 3 - Acquisitions (Details) (USD $)

1 Months Ended

12 Months Ended

1 Months Ended

0 Months Ended

24 Months Ended

1 Months Ended

12 Months Ended

Jul. 24, 2013

Jul. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Dec. 28, 2012

Jun. 15, 2011

Dec. 31, 2012

Dec. 28, 2012

Dec. 28, 2012

Dec. 28, 2012

Treasury Stock [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

General and Administrative Expense [Member]

D-1 Convertible Preferred Stock [Member]

Appealing Media [Member]

Appealing Media [Member]

Crowd Science Inc [Member]

Crowd Science Inc [Member]

Cash Withheld At Closing [Member]

Stock Compensation Expense [Member]

Stock Compensation Expense [Member]

Appealing Media [Member]

Appealing Media [Member]

Crowd Science Inc [Member]

Crowd Science Inc [Member]

Appealing Media [Member]

Appealing Media [Member]

Note 3 - Acquisitions (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to Acquire Businesses, Gross

'

'

'

'

'

'

'

'

'

$1,300,000

'

$1,100,000

$1,033,000

'

Other Payments to Acquire Businesses

'

'

'

'

'

600,000

500,000

'

'

'

1,100,000

'

'

'

Period For Achieving Certain Revenue And Operational Goals

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed

'

'

'

100,000

0

'

'

'

'

'

'

'

'

'

Business Combination, Acquisition Related Costs

'

'

'

'

'

'

'

400,000

'

'

'

'

'

'

Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares)

'

'

66,666

'

'

'

'

'

2,000,000

'

'

400,000

'

'

Business Acquisition, Equity Interest Issued or Issuable, Value Assigned

'

'

'

'

'

'

'

'

'

'

'

3,300,000

3,300,000

'

Business Combination, Consideration Transferred

'

'

'

'

'

'

'

'

'

1,300,000

'

4,400,000

4,422,000

'

Business Combination, Contingent Consideration, Liability

'

'

'

'

'

'

'

'

'

'

'

'

'

$49,000

Business Combination Contingent Shares Issuable (in Shares)

'

'

'

'

'

'

'

'

'

'

'

400,000

400,000

'

Share Price (in Dollars per share)

'

'

'

'

'

'

'

'

'

'

'

$1.67

$1.67

'

Stockholders' Equity Note, Stock Split, Conversion Ratio

6

6

'

'

'

'

'

'

'

'

'

'

'

'

Note_3_Acquisitions_Details_Ag

Note 3 - Acquisitions (Details) - Aggregate Purchase Consideration and Estimated Fair Values of the Assets Acquired and Liabilities Assumed (USD $)	12 Months Ended			0 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Jun. 15, 2011
				Appealing Media [Member]
Note 3 - Acquisitions (Details) - Aggregate Purchase Consideration and Estimated Fair Values of the Assets Acquired and Liabilities Assumed [Line Items]	'	'	'	'
Cash consideration	$844	$1,279	'	$1,000
Cash escrow account	'	'	'	300
Total purchase consideration	'	'	'	1,300
Cash	'	'	'	21
Other current assets	'	'	'	168
Property and equipment	'	'	'	48
Developed technology	'	'	'	350
Customer relationships	'	'	'	104
Non-compete agreement	'	'	'	53
Goodwill	3,902	'	3,902	889
Total assets acquired	'	'	'	1,633
Total liabilities assumed	'	'	'	333
Net assets acquired	'	'	'	$1,300

Note_3_Acquisitions_Details_Es

Note 3 - Acquisitions (Details) - Estimated Useful Lives and Valuation Techniques Utilized for Estimating Fair Value of Intangible Assets Acquired	0 Months Ended
	Jun. 15, 2011
Relief From Royalty Method [Member] | Developed Technology Rights [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
IntangibleTypeAndValuationType	'3 years
Excess Earnings Method [Member] | Customer Lists [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
IntangibleTypeAndValuationType	'5 years
With And Without Method Under the Income Approach [Member] | Noncompete Agreements [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
IntangibleTypeAndValuationType	'2 years

Note_3_Acquisitions_Details_Ea

Note 3 - Acquisitions (Details) - Earn-Outs (USD $)	Jun. 15, 2011
In Thousands, unless otherwise specified
Revenue Target [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Achievement	50.00%
Revenue Target [Member] | Maximum [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Maximum And Actual Payout	1,200
Revenue Target [Member] | Actual Payout [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Maximum And Actual Payout	600
Hiring Targets [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Achievement	100.00%
Hiring Targets [Member] | Maximum [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Maximum And Actual Payout	500
Hiring Targets [Member] | Actual Payout [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Maximum And Actual Payout	500
Maximum [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Maximum And Actual Payout	1,700
Actual Payout [Member]	'
Business Acquisition, Contingent Consideration [Line Items]	'
Maximum And Actual Payout	1,100

Note_3_Acquisitions_Details_Un

Note 3 - Acquisitions (Details) - Unaudited Pro Forma Results of Operations had the Acquisition Occurred on January 1, 2011 (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011
Unaudited Pro Forma Results of Operations had the Acquisition Occurred on January 1, 2011 [Abstract]	'
Revenue	$68,940
Net income	($11,186)
Basic and diluted net loss per share attributable to common stockholders (in Dollars per share)	($0.51)

Note_3_Acquisitions_Details_Ag1

Note 3 - Acquisitions (Details) - Aggregate Purchase Consideration and Estimated Fair Values of Assets Acquired and Liabilities Assumed (USD $)	0 Months Ended			1 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Aug. 12, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 28, 2012	Dec. 28, 2012
				Crowd Science Inc [Member]	Crowd Science Inc [Member]
Note 3 - Acquisitions (Details) - Aggregate Purchase Consideration and Estimated Fair Values of Assets Acquired and Liabilities Assumed [Line Items]	'	'	'	'	'
Cash consideration	'	'	'	$1,100	$1,033
Cash escrow account	'	'	'	'	49
2,000,000 Series D-1 preferred stock shares	'	'	'	'	3,319
Series D-1 issuance costs	2,900	'	'	'	21
Total purchase consideration	'	'	'	4,400	4,422
Cash	'	'	'	259	259
Accounts receivable	'	'	'	163	163
Other current assets	'	'	'	63	63
Property and equipment	'	'	'	14	14
Other assets	'	'	'	30	30
Developed technology	'	'	'	2,600	2,600
Goodwill	'	3,902	3,902	3,013	3,013
Total assets acquired	'	'	'	6,142	6,142
Accounts payable and accruals	'	'	'	461	461
Deferred revenue	'	'	'	223	223
Deferred tax liability	'	'	'	1,036	1,036
Total liabilities assumed	'	'	'	1,720	1,720
Net assets acquired	'	'	'	$4,422	$4,422

Note_3_Acquisitions_Details_De

Note 3 - Acquisitions (Details) - Details related to estimated useful lives and the valuation techniques utilized for estimating fair (Developed Technology [Member])	1 Months Ended
	Dec. 28, 2012
Developed Technology [Member]	'
Fair Value Inputs, Assets, Quantitative Information [Line Items]	'
Developed Technology	'4 years

Note_3_Acquisitions_Details_Un1

Note 3 - Acquisitions (Details) - Unaudited pro-forma financial information of the results of Operations as if the Acquisition had Occurred on January 1, 2011 (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Note 3 - Acquisitions (Details) - Unaudited pro-forma financial information of the results of Operations as if the Acquisition had Occurred on January 1, 2011 [Line Items]	'	'
Revenue	'	$68,940
Net income	'	-11,186
Basic and diluted net income (loss) per share attributable to common stockholders (in Dollars per share)	'	($0.51)
Crowd Science Inc [Member]	'	'
Note 3 - Acquisitions (Details) - Unaudited pro-forma financial information of the results of Operations as if the Acquisition had Occurred on January 1, 2011 [Line Items]	'	'
Revenue	117,441	69,146
Net income	$2,676	($15,523)
Basic and diluted net income (loss) per share attributable to common stockholders (in Dollars per share)	$0	($4.25)

Note_4_Cash_Cash_Equivalents_a2

Note 4 - Cash, Cash Equivalents and Marketable Securities (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013
In Millions, unless otherwise specified			Minimum [Member]	Maximum [Member]
Note 4 - Cash, Cash Equivalents and Marketable Securities (Details) [Line Items]	'	'	'	'
Cash	$0.20	$0.40	'	'
Financial Instruments Maturities	'	'	'3 months	'24 months

Note_4_Cash_Cash_Equivalents_a3

Note 4 - Cash, Cash Equivalents and Marketable Securities (Details) - Summary of Marketable Securities (USD $)	12 Months Ended							12 Months Ended			12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
		Cash [Member]	Cash [Member]	Money Market Funds [Member]	Money Market Funds [Member]	Cash and Cash Equivalents [Member]	Cash and Cash Equivalents [Member]	Corporate Bond Securities [Member]	Commercial Paper [Member]	Certificates of Deposit [Member]	Marketable Securities [Member]
Note 4 - Cash, Cash Equivalents and Marketable Securities (Details) - Summary of Marketable Securities [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Cost	$64,114	$24,255	$14,401	$18,371	$13,508	$42,626	$27,909	$17,892	$2,396	$1,200	$21,488
Gross Unrealized Gains	3	'	'	'	'	'	'	3	'	'	3
Gross Unrealized Losses	-10	'	'	'	'	'	'	-10	'	'	-10
Estimated Fair Value	$64,107	$24,255	$14,401	$18,371	$13,508	$42,626	$27,909	$17,885	$2,396	$1,200	$21,481

Note_5_Fair_Value_of_Financial2

Note 5 - Fair Value of Financial Instruments (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Aug. 13, 2013
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]	'	'	'	'
Derivative Liability, Fair Value, Gross Liability	'	'	'	$400,000
Fair Value Adjustment of Warrants	125,000	102,000	-18,000	'
Other Income [Member]	'	'	'	'
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]	'	'	'	'
Fair Value Adjustment of Warrants	100,000	'	18,000,000	'
Other Expense [Member]	'	'	'	'
Note 5 - Fair Value of Financial Instruments (Details) [Line Items]	'	'	'	'
Fair Value Adjustment of Warrants	'	$100,000	'	'

Note_5_Fair_Value_of_Financial3

Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Warrant liability	'	$301
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	18,371	13,508
Money Market Funds [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	18,371	13,508
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	17,885	'
Corporate Debt Securities [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	17,885	'
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	2,396	'
Commercial Paper [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	2,396	'
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	1,200	'
Certificates of Deposit [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	1,200	'
Securities (Assets) [Member] | Fair Value, Inputs, Level 2 [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	21,481	'
Securities (Assets) [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Asset fair value	21,481	'
Fair Value, Inputs, Level 3 [Member]	'	'
Note 5 - Fair Value of Financial Instruments (Details) - Money Market Funds, Marketable Securities and Warrant Liability Measured at Fair Value on a Recurring Basis [Line Items]	'	'
Warrant liability	'	$301

Note_5_Fair_Value_of_Financial4

Note 5 - Fair Value of Financial Instruments (Details) - Changes in Warrant Liability Classified Level 3 (USD $)	0 Months Ended		1 Months Ended		12 Months Ended
	Aug. 07, 2013	Aug. 12, 2013	Jan. 27, 2010	Sep. 25, 2009	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Changes in Warrant Liability Classified Level 3 [Abstract]	'	'	'	'	'		'		'
Balance	'	'	'	'	$301,000		$199,000		$217,000
Change in fair value recorded in other income (expense), net	'	'	'	'	125,000		102,000		-18,000
Reclassification of warrants to additional paid-in capital in connection with the IPO(1)	400,000	400,000	14,572	14,573	-426,000	[1]	'	[1]	'	[1]
Balance	'	$426,000	'	'	'		$301,000		$199,000
[1]	Upon the closing of the IPO, all outstanding warrants to purchase convertible preferred stock converted into warrants to purchase shares of common stock.Consequently, the Company reclassified the balance of these warrants to additional paid-in capital

Note_6_Property_Equipment_and_2

Note 6 - Property, Equipment and Software (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Abstract]	'	'	'
Depreciation	$3.30	$2.60	$2

Note_6_Property_Equipment_and_3

Note 6 - Property, Equipment and Software (Details) - Property, Equipment and Software (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property, Equipment and Software	$16,104	$11,750
Total property, equipment and software	16,104	11,750
Less: accumulated depreciation and amortization	-9,494	-6,199
Property, equipment and software, net	6,610	5,551
Office Furniture And Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Equipment and Software	494	464
Total property, equipment and software	494	464
Equipment And Computers [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Equipment and Software	7,082	5,069
Total property, equipment and software	7,082	5,069
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Equipment and Software	1,679	1,573
Total property, equipment and software	1,679	1,573
Computer Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Equipment and Software	1,305	1,080
Total property, equipment and software	1,305	1,080
Internal Use Software Development Costs [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property, Equipment and Software	5,544	3,564
Total property, equipment and software	$5,544	$3,564

Note_6_Property_Equipment_and_4

Note 6 - Property, Equipment and Software (Details) - Assets Recorded Under Capital Leases (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets Recorded Under Capital Leases [Abstract]	'	'
Gross assets under capital leases	$1,910	$1,910
Less: accumulated depreciation	-1,597	-960
Net assets under capital leases	$313	$950

Note_7_Goodwill_and_Intangible2

Note 7 - Goodwill and Intangible Assets (Details) (USD $)	12 Months Ended			0 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jun. 15, 2011	Dec. 28, 2012
				Appealing Media [Member]	Crowd Science Inc [Member]
Note 7 - Goodwill and Intangible Assets (Details) [Line Items]	'	'	'	'	'
Goodwill And Intangible Assets Acquired During Period	'	'	'	$0.90	$3
Amortization of Intangible Assets	$0.80	$0.20	$0.10	'	'

Note_7_Goodwill_and_Intangible3

Note 7 - Goodwill and Intangible Assets (Details) - Intangible Assets Detail (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$3,107	$3,107
Accumulated Amortization	-1,058	-260
Net Carrying Amount	2,049	2,847
Developed Technology Rights [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	2,950	2,950
Accumulated Amortization	-951	-185
Net Carrying Amount	1,999	2,765
Weighted-Average Remaining Life (years)	'2 years 255 days	'3 years 255 days
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	104	104
Accumulated Amortization	-54	-33
Net Carrying Amount	50	71
Weighted-Average Remaining Life (years)	'2 years 146 days	'3 years 146 days
Noncompete Agreements [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	53	53
Accumulated Amortization	-53	-42
Net Carrying Amount	'	$11
Weighted-Average Remaining Life (years)	'	'146 days

Note_7_Goodwill_and_Intangible4

Note 7 - Goodwill and Intangible Assets (Details) - Estimated Future Amortization Expense (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Estimated Future Amortization Expense [Abstract]	'	'
2014	$719	'
2015	671	'
2016	659	'
Total future amortization expense	$2,049	$2,847

Note_8_Accrued_Liabilities_Det

Note 8 - Accrued Liabilities (Details) - Accrued Liabilities (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Note 8 - Accrued Liabilities (Details) - Accrued Liabilities [Line Items]	'	'
Accrued Liabilities	$12,734	$7,219
Accrued Compensation [Member]	'	'
Note 8 - Accrued Liabilities (Details) - Accrued Liabilities [Line Items]	'	'
Accrued Liabilities	5,727	3,554
Accrued Vacation And Other Employee Benefits [Member]	'	'
Note 8 - Accrued Liabilities (Details) - Accrued Liabilities [Line Items]	'	'
Accrued Liabilities	3,081	1,673
Accrued Customer Incentives [Member]	'	'
Note 8 - Accrued Liabilities (Details) - Accrued Liabilities [Line Items]	'	'
Accrued Liabilities	1,540	'
Accrued Taxes [Member]	'	'
Note 8 - Accrued Liabilities (Details) - Accrued Liabilities [Line Items]	'	'
Accrued Liabilities	559	665
Other Accrued Expenses [Member]	'	'
Note 8 - Accrued Liabilities (Details) - Accrued Liabilities [Line Items]	'	'
Accrued Liabilities	$1,827	$1,327

Note_9_Borrowings_Details

Note 9 - Borrowings (Details) (USD $)

0 Months Ended

1 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

Aug. 07, 2013

Jan. 27, 2017

Sep. 25, 2016

Aug. 12, 2013

Jan. 27, 2010

Sep. 25, 2009

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

31-May-12

31-May-12

Dec. 31, 2006

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2009

Sep. 30, 2009

31-May-12

31-May-12

31-May-12

Minimum Requiring Quick Ratio Covenant [Member]

Total Amount [Member]

Series A-2 Preferred Stock [Member]

Loan Agreement [Member]

Loan Agreement [Member]

Loan Agreement [Member]

Equal Monthly Installments Of Principle And Interest [Member]

Credit Agreement [Member]

Maximum [Member]

Minimum [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Credit Agreement [Member]

Note 9 - Borrowings (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

'

'

'

'

'

'

'

'

$5,000,000

'

'

'

'

$1,000,000

'

$20,000,000

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8.00%

'

'

'

'

Debt Instrument Number Of Periodic Installment Payments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

36

'

'

'

Line of Credit Facility, Amount Outstanding

'

'

'

'

'

'

'

'

0

'

'

'

'

0

200,000

'

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

'

'

Adjusted Quick Ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.5

1

Adjustments to Additional Paid in Capital, Warrant Issued

400,000

'

'

400,000

14,572

14,573

'

-426,000

[1]

'

[1]

'

[1]

'

29,145

'

'

'

'

'

'

'

'

Investment Warrants, Exercise Price (in Dollars per share)

'

$1.72

$1.72

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Conversion, Converted Instrument, Shares Issued (in Shares)

'

'

'

'

'

'

24,185

'

'

'

'

'

'

'

'

'

'

'

'

'

Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)

'

'

'

53,983

'

'

'

'

'

'

'

'

24,838

'

'

'

'

'

'

'

Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)

'

'

'

'

'

'

'

'

'

'

'

'

1.2078

'

'

'

'

'

'

'

Fair Value Adjustment of Warrants

'

'

'

'

'

'

'

$125,000

$102,000

($18,000)

'

'

'

'

'

'

'

'

'

'

[1]

Upon the closing of the IPO, all outstanding warrants to purchase convertible preferred stock converted into warrants to purchase shares of common stock.Consequently, the Company reclassified the balance of these warrants to additional paid-in capital

Note_9_Borrowings_Details_Summ

Note 9 - Borrowings (Details) - Summary of Warrants to Purchase Common Stock Outstanding	Aug. 12, 2013	Dec. 31, 2013
		Issued December 31, 2006 [Member]
		Common Stock [Member]
Class of Warrant or Right [Line Items]	'	'
31-Dec-06	'	'Common Stock
31-Dec-06	'	31-Dec-18
31-Dec-06	'	1.2078
31-Dec-06	53,983	24,838

Note_9_Borrowings_Details_Assu

Note 9 - Borrowings (Details) - Assumptions Used to Determine Fair Value of Warrants Outstanding	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Borrowings (Details) - Assumptions Used to Determine Fair Value of Warrants Outstanding [Line Items]	'	'
Volatility (%)	80.00%	80.00%
Minimum [Member]	'	'
Note 9 - Borrowings (Details) - Assumptions Used to Determine Fair Value of Warrants Outstanding [Line Items]	'	'
Expected term (years)	'3 years 149 days	'4 years 3 days
Risk-free interest rate (%)	0.47%	0.54%
Maximum [Member]	'	'
Note 9 - Borrowings (Details) - Assumptions Used to Determine Fair Value of Warrants Outstanding [Line Items]	'	'
Expected term (years)	'5 years 277 days	'6 years
Risk-free interest rate (%)	1.77%	0.95%

Note_9_Borrowings_Details_Fair

Note 9 - Borrowings (Details) - Fair Value of Warrants Outstanding (USD $)	Aug. 12, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Note 9 - Borrowings (Details) - Fair Value of Warrants Outstanding [Line Items]	'	'	'	'
Fair value of Warrants	$426	$301	$199	$217
Series A-2 Warrant [Member]	'	'	'	'
Note 9 - Borrowings (Details) - Fair Value of Warrants Outstanding [Line Items]	'	'	'	'
Fair value of Warrants	203	144	'	'
Series C Warrant [Member]	'	'	'	'
Note 9 - Borrowings (Details) - Fair Value of Warrants Outstanding [Line Items]	'	'	'	'
Fair value of Warrants	$223	$157	'	'

Note_10_Commitments_and_Contin2

Note 10 - Commitments and Contingencies (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]	'	'	'
Operating Leases, Rent Expense, Net	$2.20	$1.70	$0.80

Note_10_Commitments_and_Contin3

Note 10 - Commitments and Contingencies (Details) - Future Minimum Payments (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 10 - Commitments and Contingencies (Details) - Future Minimum Payments [Line Items]	'
Operating lease obligations	$4,154
Capital lease obligations	388
Traffic acquisition costs and other purchase commitments	2,742
Total minimum payments	7,284
Payments Due In Less Than One Year [Member]	'
Note 10 - Commitments and Contingencies (Details) - Future Minimum Payments [Line Items]	'
Operating lease obligations	1,953
Capital lease obligations	366
Traffic acquisition costs and other purchase commitments	2,742
Total minimum payments	5,061
Payments Due Between One And Three Years [Member]	'
Note 10 - Commitments and Contingencies (Details) - Future Minimum Payments [Line Items]	'
Operating lease obligations	2,201
Capital lease obligations	22
Total minimum payments	$2,223

Note_11_Convertible_Preferred_2

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) (USD $)

0 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

1 Months Ended

1 Months Ended

11 Months Ended

7 Months Ended

1 Months Ended

4 Months Ended

1 Months Ended

4 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

Aug. 06, 2013

Aug. 12, 2013

Dec. 31, 2013

Jul. 24, 2013

Jul. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2006

Dec. 31, 2005

Aug. 13, 2013

Jul. 31, 2006

Dec. 31, 2013

Aug. 06, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Jul. 31, 2006

Jul. 31, 2006

Dec. 31, 2013

Dec. 31, 2012

Jul. 30, 2006

Dec. 31, 2013

Dec. 31, 2012

Jul. 31, 2008

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2009

Dec. 31, 2013

Dec. 31, 2012

Feb. 28, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2010

Apr. 30, 2012

Apr. 30, 2012

Oct. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jul. 31, 2013

Dec. 31, 2013

Jul. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Aug. 12, 2013

Aug. 12, 2013

Dec. 31, 2013

Dec. 31, 2013

Redemption Rights [Member]

10% Or More Shareholder [Member]

10% Or More Shareholder [Member]

Common Stock [Member]

Common Stock [Member]

Convertible Preferred Stock [Member]

Series A-1 Preferred Stock [Member]

Series A-1 Preferred Stock [Member]

Series A-1 Preferred Stock [Member]

Series A-2 Preferred Stock [Member]

Series A-2 Preferred Stock [Member]

Series A-2 Preferred Stock [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Series B Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series C Preferred Stock [Member]

Series D Preferred Stock [Member]

Series D Preferred Stock [Member]

Series D Preferred Stock [Member]

D-1 Convertible Preferred Stock [Member]

Series D-1 Preferred Stock [Member]

Series D-1 Preferred Stock [Member]

Series D-1 Preferred Stock [Member]

Series D-1 Preferred Stock [Member]

Series D-1 Preferred Stock [Member]

Series D-1 Preferred Stock [Member]

Convertible Common Stock [Member]

Series A1, A2, and D [Member]

The 2004 Plan [Member]

The 2004 Plan [Member]

The 2013 Plan [Member]

Equity Incentive Plan [Member]

Equity Incentive Plan [Member]

Additional Paid-in Capital [Member]

Non Employees [Member]

Underwriting Discounts And Commissions [Member]

Offering Expenses [Member]

Crowd Science [Member]

Minimum [Member]

Convertible Preferred Stock [Member]

Crowd Science [Member]

Minimum [Member]

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Issued During Period, Shares, New Issues (in Shares)

'

5,125,000

'

'

'

'

5,125,000

'

'

'

'

'

'

'

'

'

5,125,000

'

'

9,538,416

'

'

22,324,696

'

'

16,134,433

'

'

16,229,717

'

'

24,876,609

'

'

5,328,462

2,000,000

7,612,087

9,134,503

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sale of Stock, Price Per Share

'

$9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance of Common Stock (in Dollars)

'

$46,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from Issuance Initial Public Offering (in Dollars)

'

40,000,000

'

'

'

'

39,976,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

35,000,000

Payments of Stock Issuance Costs (in Dollars)

'

2,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

'

'

100,000

'

'

100,000

'

'

'

'

'

100,000

100,000

'

'

'

'

'

'

'

'

'

'

'

3,200,000

2,900,000

'

'

Stockholders' Equity Note, Stock Split, Conversion Ratio

'

'

'

6

6

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible Notes Value (in Dollars)

'

'

'

'

'

'

'

'

'

1,900,000

1,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Conversion, Converted Instrument, Shares Issued (in Shares)

'

'

'

'

'

24,185

'

'

'

'

'

'

'

'

'

'

'

'

18,428,593

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares Issued, Price Per Share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.11

$0.11

'

$0.20

$0.20

'

$0.55

$0.55

'

$0.29

$0.29

'

$1.00

$1.00

'

'

$1.67

$1.31

$1.31

$1.31

$1.31

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Repurchased During Period, Shares (in Shares)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-66,666

'

'

1,801,182

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares Repurchased, Price Per Share

'

'

'

'

'

'

'

'

'

'

'

'

$0.88

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible Preferred Stock Conversion Rate

'

'

'

'

'

'

'

$0.17

'

'

'

'

'

'

'

'

'

$0.17

'

'

'

$0.11

'

'

$0.20

'

'

$0.51

'

'

$0.29

'

'

$1.00

'

'

'

'

'

'

$1.31

$0.18

'

'

'

'

'

'

'

'

'

'

'

'

Percentage Of Preferred Stock Shares Outstanding

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

60.00%

Preferred Stock, Dividend Rate, Percentage

'

'

'

'

'

'

8.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock, Voting Rights

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'one

'

'

'

'

'

'

'

'

'

'

'

Preferred Stock, Liquidation Preference Per Share

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$0.11

'

'

$0.20

'

'

$0.55

'

'

$0.29

'

'

$1.00

'

'

'

'

'

'

$1.31

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage Sale Of Voting Power

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Conversion of Stock, Shares Converted (in Shares)

'

'

'

'

'

'

21,840,537

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock, Value, Issued (in Dollars)

'

'

32,000

'

'

32,000

32,000

5,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

76,200,000

'

'

'

'

'

Preferred Stock, Shares Authorized (in Shares)

'

'

'

'

'

'

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock, Shares Authorized (in Shares)

'

'

200,000,000

'

'

200,000,000

200,000,000

192,939,347

'

'

'

200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common Stock, Shares, Issued (in Shares)

'

'

31,933,862

'

'

31,933,862

31,933,862

4,816,863

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Treasury Stock, Shares (in Shares)

'

'

66,666

'

'

66,666

66,666

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

66,666

'

Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date

85.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

85.00%

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period

'10 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)

500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value

'

'

'

'

'

'

$5.89

$3.06

$2.76

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)

'

'

'

'

'

'

1,300,000

3,400,000

1,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value

'

'

'

'

'

'

$33,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate

15.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)

'

'

'

'

'

'

2,069,000

913,000

1,790,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,333

'

'

'

'

Capitalized Computer Software, Period Increase (Decrease) (in Dollars)

'

'

'

'

'

'

226,000

79,000

74,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)

'

'

$10,800,000

'

'

$10,800,000

$10,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition

'

'

'

'

'

'

'3 years 36 days

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note_11_Convertible_Preferred_3

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Convertible Preferred Stock (USD $)	Dec. 31, 2013	Dec. 31, 2012
Class of Stock [Line Items]	'	'
Shares Authorized	130,130,239	130,130,239
Shares Issued and Outstanding	129,806,334	129,806,334	[1]
Carrying Value	'	$76,191,000	[2]
Liquidation Preference	'	77,343,000
Series A-1 Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Authorized	'	26,165,827
Shares Issued and Outstanding	'	26,165,827	[1]
Issuance Price Per Share	'	$0.11	[1]
Carrying Value	'	1,341,000	[2]
Liquidation Preference	'	2,747,000
Series A-2 Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Authorized	'	22,473,726
Shares Issued and Outstanding	'	22,324,696	[1]
Issuance Price Per Share	'	$0.20	[1]
Carrying Value	'	4,494,000	[2]
Liquidation Preference	'	4,494,000
Series B Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Authorized	'	16,134,433
Shares Issued and Outstanding	'	16,134,433	[1]
Issuance Price Per Share	'	$0.55	[1]
Carrying Value	'	8,777,000	[2]
Liquidation Preference	'	8,835,000
Series C Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Authorized	'	16,404,591
Shares Issued and Outstanding	'	16,229,717	[1]
Issuance Price Per Share	'	$0.29	[1]
Carrying Value	'	4,546,000	[2]
Liquidation Preference	'	4,640,000
Series D Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Authorized	'	24,876,609
Shares Issued and Outstanding	'	24,876,609	[1]
Issuance Price Per Share	'	$1.00	[1]
Carrying Value	'	24,901,000	[2]
Liquidation Preference	'	25,000,000
Series D-1 Preferred Stock [Member]	'	'
Class of Stock [Line Items]	'	'
Shares Authorized	'	24,075,053
Shares Issued and Outstanding	'	24,075,052	[1]
Issuance Price Per Share	'	$1.31	[1]
Carrying Value	'	32,132,000	[2]
Liquidation Preference	'	$31,627,000
[1]	Amounts are presented without giving effect to the Company's 1-for-6 reverse stock split that was effective July 24, 2013, as the number of convertible preferred stock shares did not change.
[2]	Amounts are net of issuance costs.

Note_11_Convertible_Preferred_4

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Common Stock Award Activity	0 Months Ended	12 Months Ended
	Aug. 12, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common Stock Award Activity [Abstract]	'	'	'	'
Shares Outstanding	'	4,816,863	'	'
Option exercises	'	191,773	921,000	327,000
Warrant exercise	'	24,185	'	'
RSUs vesting, net of RSUs withheld for taxes	'	2,170	'	'
Conversion of convertible preferred stock	'	21,840,537	'	'
Common stock issued in connection with IPO	5,125,000	5,125,000	'	'
Treasury stock	'	-66,666	'	'
Shares Outstanding	'	31,933,862	4,816,863	'

Note_11_Convertible_Preferred_5

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Option Award Activity (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Option Award Activity [Abstract]	'		'		'
Balance at December 31	4,015,000		4,262,000		3,449,000
Balance at December 31	$3.78		$2.93		$1.74
Balance at December 31	'7 years 321 days		'8 years 36 days		'7 years 343 days
Balance at December 31	$8,659	[1]	$6,906	[1]	$9,984	[1]
Vested and exercisable as of December 31, 2013	2,802,000		'		'
Vested and exercisable as of December 31, 2013	$3.71		'		'
Vested and exercisable as of December 31, 2013	'6 years 105 days		'		'
Vested and exercisable as of December 31, 2013	10,607	[1]	'		'
Vested as of December 31, 2013 and expected to vest thereafter (1)	5,213,000	[2]	'		'
Vested as of December 31, 2013 and expected to vest thereafter (1)	$5.30	[2]	'		'
Vested as of December 31, 2013 and expected to vest thereafter (1)	'7 years 65 days	[2]	'		'
Vested as of December 31, 2013 and expected to vest thereafter (1)	13,359	[1],[2]	'		'
Granted	2,069,000		913,000		1,790,000
Granted	$8.58		$4.86		$4.62
Exercised	-191,773		-921,000		-327,000
Exercised	$1.99		$0.78		$1.80
Canceled and forfeited	-179,000		-239,000		-650,000
Canceled and forfeited	$5.44		$4.44		$2.40
Balance at December 31	5,713,000		4,015,000		4,262,000
Balance at December 31	$5.53		$3.78		$2.93
Balance at December 31	'7 years 113 days		'7 years 321 days		'8 years 36 days
Balance at December 31	$13,704	[1]	$8,659	[1]	$6,906	[1]
[1]	The aggregate intrinsic value represents the difference between the Company's estimated fair value of its common stock and the exercise price of outstanding in-the-money options as of those dates.
[2]	Options expected to vest reflect an estimated forfeiture rate.

Note_11_Convertible_Preferred_6

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Restricted Stock Award Activity (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2011
		Restricted Stock [Member]
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Restricted Stock Award Activity [Line Items]	'	'
Balance at December 31, 2010	'	22,142
Balance at December 31, 2010	'	$0.18
Granted	0	833
Granted	$33,000	$4.62
Released	'	-22,975
Released	'	$0.36

Note_11_Convertible_Preferred_7

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Restricted Stock Unit Activity (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2011
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Restricted Stock Unit Activity [Line Items]	'		'
Granted	0		'
Granted	$33,000		'
Released	-2,170		'
Restricted Stock Units (RSUs) [Member]	'		'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Restricted Stock Unit Activity [Line Items]	'		'
Balance at December 31, 2012	'		'	[1]
Granted	41,837		'
Granted	$8.21		'
Released	-3,713		'
Released	$8.89		'
Balance at December 31, 2013	38,124		'
Balance at December 31, 2013	$8.15		'
Balance at December 31, 2013	'2 years 47 days		'
Balance at December 31, 2013	$284	[1]	'	[1]
[1]	The intrinsic value of RSUs is based on the Company's closing stock price as reported by the New York Stock Exchange on December 31, 2013.

Note_11_Convertible_Preferred_8

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Assumptions Used To Value Employee Stock Purchase Rights	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Assumptions Used To Value Employee Stock Purchase Rights [Line Items]	'	'
Volatility	80.00%	80.00%
Employee Stock Purchase Plan [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Assumptions Used To Value Employee Stock Purchase Rights [Line Items]	'	'
Expected term (years)	'171 days	'
Volatility	80.00%	'
Risk-free interest rate	0.08%	'
Employee Stock Option [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Assumptions Used To Value Employee Stock Purchase Rights [Line Items]	'	'
Expected term (years)	'8 years 153 days	'9 years 237 days
Volatility	80.00%	80.00%
Risk-free interest rate	2.64%	1.70%

Note_11_Convertible_Preferred_9

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance	Dec. 31, 2013	Dec. 31, 2012
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	7,212,525	26,734,557
Convertible Preferred Stock Including Anti Dilution Shares Member	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	'	21,840,537
Convertible Preferred Stock Warrants [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	'	53,983
Common Stock Options [Member}	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	5,713,106	4,015,088
Restricted Stock Units [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	38,124	'
Warrants To Purchase Common Stock [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	24,838	'
Shares Available For Future Issuance [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	936,457	824,949
Employee Stock Purchase Plan [Member]	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Shares Of Common Stock Reserved For Future Issuance [Line Items]	'	'
Shares reserved for future issuance	500,000	'

Recovered_Sheet1

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions [Line Items]	'	'	'
Volatility (%)	80.00%	80.00%	'
Employee Stock Option [Member]	'	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions [Line Items]	'	'	'
Expected term (years)	'8 years 153 days	'9 years 237 days	'
Volatility (%)	80.00%	80.00%	'
Risk-free interest rate (%)	2.64%	1.70%	'
Employee Stock Option [Member] | Minimum [Member]	'	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions [Line Items]	'	'	'
Expected term (years)	'5 years 186 days	'5 years 219 days	'5 years 321 days
Volatility (%)	'	65.00%	64.00%
Risk-free interest rate (%)	1.06%	0.73%	1.03%
Employee Stock Option [Member] | Maximum [Member]	'	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions [Line Items]	'	'	'
Expected term (years)	'6 years 43 days	'6 years 25 days	'6 years 29 days
Volatility (%)	'	90.00%	66.00%
Risk-free interest rate (%)	1.72%	1.09%	2.84%
Minimum [Member]	'	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions [Line Items]	'	'	'
Expected term (years)	'3 years 149 days	'4 years 3 days	'
Risk-free interest rate (%)	0.47%	0.54%	'
Maximum [Member]	'	'	'
Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Stock Option Grants Valuation Assumptions [Line Items]	'	'	'
Expected term (years)	'5 years 277 days	'6 years	'
Risk-free interest rate (%)	1.77%	0.95%	'

Recovered_Sheet2

Note 11 - Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Details) - Summary Of Stock-based Compensation Related To Stock-Based Awards (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'		'		'
Allocation of Stock Based Compensation	$3,834		$2,042		$1,468
Cost of Revenue [Member]	'		'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'		'		'
Allocation of Stock Based Compensation	185		128		68
Selling and Marketing Expense [Member]	'		'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'		'		'
Allocation of Stock Based Compensation	1,806		1,215		981
Research and Development Expense [Member]	'		'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'		'		'
Allocation of Stock Based Compensation	346	[1]	184	[1]	65	[1]
General and Administrative Expense [Member]	'		'		'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'		'		'
Allocation of Stock Based Compensation	$1,497		$515		$354
[1]	Excludes $226,000, $79,000 and $74,000 of stock-based compensation expense that was capitalized as part of internal-use software development costs for the years ended December 31, 2013, 2012 and 2011, respectively.

Note_12_Net_Income_Loss_Per_Sh2

Note 12 - Net Income (Loss) Per Share (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Percentage	8.00%
Series A-1 Preferred Stock [Member]	'
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Per-Dollar-Amount	0.105
Series A-2 Preferred Stock [Member]	'
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Per-Dollar-Amount	0.2013
Series B Preferred Stock [Member]	'
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Per-Dollar-Amount	0.5476
Series C Preferred Stock [Member]	'
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Per-Dollar-Amount	0.28592
Series D Preferred Stock [Member]	'
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Per-Dollar-Amount	1.00496
Series D-1 Preferred Stock [Member]	'
Note 12 - Net Income (Loss) Per Share (Details) [Line Items]	'
Preferred Stock, Dividend Rate, Per-Dollar-Amount	1.3137

Note_12_Net_Income_Loss_Per_Sh3

Note 12 - Net Income (Loss) Per Share (Details) - Calculation of Basic and Diluted Net Income (Loss) Per Share (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:	'	'	'
Net income (loss) (in Dollars)	$321	$6,266	($11,089)
Less: Undistributed earnings allocated to participating securities (in Dollars)	'	-6,177	'
Net income (loss) attributable to common stockholders (in Dollars)	$321	$89	($11,089)
Denominator:	'	'	'
Basic	15,752	4,716	3,650
Weighted-average effect of potentially dilutive shares:	'	'	'
Employee stock options and restricted stock units	1,459	790	'
Convertible preferred and common stock warrants	39	39	'
Diluted	17,250	5,545	3,650
Basic (in Dollars per share)	$0.02	$0.02	($3.04)
Diluted (in Dollars per share)	$0.02	$0.02	($3.04)

Note_12_Net_Income_Loss_Per_Sh4

Note 12 - Net Income (Loss) Per Share (Details) - Equity Shares Excluded from the Calculation of Diluted Net Income Per Share	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Convertible Preferred Stock [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Antidilutive Securities	'	21,634	20,239
Employee Stock Options And Restricted Stock Units [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Antidilutive Securities	1,280	205	4,262
Convertible Preferred Stock Warrants [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Antidilutive Securities	'	'	54

Note_13_Income_Taxes_Details

Note 13 - Income Taxes (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 13 - Income Taxes (Details) [Line Items]	'	'	'
Valuation Allowance, Deferred Tax Asset, Change in Amount	$0.10	$2.70	$3.90
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	8.3	'	'
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	14.8	'	'
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Domestic Subsidiaries	1	'	'
Internal Revenue Service (IRS) [Member]	'	'	'
Note 13 - Income Taxes (Details) [Line Items]	'	'	'
Deferred Tax Assets, Tax Credit Carryforwards, Research	0.7	'	'
State and Local Jurisdiction [Member]	'	'	'
Note 13 - Income Taxes (Details) [Line Items]	'	'	'
Deferred Tax Assets, Tax Credit Carryforwards, Research	$0.60	'	'

Note_13_Income_Taxes_Details_D

Note 13 - Income Taxes (Details) - Domestic and Foreign Components of Income (Loss) before Income Taxes (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Domestic and Foreign Components of Income (Loss) before Income Taxes [Abstract]	'	'	'
Domestic	$369	$6,289	($8,510)
Foreign	622	589	-2,641
Total	$991	$6,878	($11,151)

Note_13_Income_Taxes_Details_C

Note 13 - Income Taxes (Details) - Components of Income Tax (Expense) Benefit (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of Income Tax (Expense) Benefit [Abstract]	'	'	'
Federal	($106)	($220)	'
State	-493	-190	-59
Foreign	-260	-146	-21
Total	-859	-556	-80
Federal	221	'	'
State	23	'	'
Foreign	-55	-56	142
Total	189	-56	142
Total income tax (expense) benefit	($670)	($612)	$62

Note_13_Income_Taxes_Details_E

Note 13 - Income Taxes (Details) - Effective Tax Rates and the Federal Statutory Tax Rate Reconciliation	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effective Tax Rates and the Federal Statutory Tax Rate Reconciliation [Abstract]	'	'	'
Tax benefit at federal statutory rate	34.00%	34.00%	34.00%
State, net of federal effect	31.30%	1.80%	-0.30%
Foreign rate differential	-21.40%	-2.90%	-8.00%
Stock-based compensation	76.50%	7.20%	-2.40%
Change in valuation allowance	-51.40%	-46.70%	-27.00%
Other non-deductible expenses	-1.20%	8.00%	-1.70%
Other	-0.20%	7.50%	5.90%
Total provision	67.60%	8.90%	0.50%

Note_13_Income_Taxes_Details_S

Note 13 - Income Taxes (Details) - Significant Components of Deferred Tax Assets and Liabilities (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:	'	'
Accruals and reserves	$1,314	$764
Net operating loss carryforwards	4,307	6,002
Tax credit carryforwards	1,234	684
Stock-based compensation	1,977	1,085
Foreign taxes	19	74
Total deferred tax assets	8,851	8,609
Fixed assets	-283	-373
State taxes	-1,025	-765
Purchased intangible assets	-792	-1,036
Total deferred tax liabilities	-2,100	-2,174
Valuation allowance	-7,524	-7,397
Total net deferred tax liabilities	($773)	($962)

Note_13_Income_Taxes_Details_R

Note 13 - Income Taxes (Details) - Reconciliation of the Beginning and Ending Balances of the Unrecognized Tax Benefits (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of the Beginning and Ending Balances of the Unrecognized Tax Benefits [Abstract]	'	'	'
Unrecognized benefit – beginning of period	$246	$158	$95
Unrecognized benefit – end of period	358	246	158
Gross increases – current year tax provisions	$112	$88	$63

Note_14_Related_Party_Transact1

Note 14 - Related Party Transactions (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Series D-1 Convertible Preferred Stock Investor [Member]	'	'	'	'
Note 14 - Related Party Transactions (Details) [Line Items]	'	'	'	'
Costs and Expenses, Related Party	$800,000	$1,300,000	$700,000	$0
Related Party Transaction, Other Revenues from Transactions with Related Party	'	25,000	'	'
Due to Related Parties	'	400,000	200,000	'
Nielsen [Member]	'	'	'	'
Note 14 - Related Party Transactions (Details) [Line Items]	'	'	'	'
Due to Related Parties	'	200,000	0	'
Related Party Transaction, Expenses from Transactions with Related Party	'	'	$300,000	$400,000

Note_15_Segments_and_Geographi2

Note 15 - Segments and Geographical Information (Details)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Number of Operating Segments	1
Number of Reportable Segments	1

Note_15_Segments_and_Geographi3

Note 15 - Segments and Geographical Information (Details) - Segments (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 15 - Segments and Geographical Information (Details) - Segments [Line Items]	'	'	'
Revenues by location	$151,128	$116,744	$68,565
Domestic [Member]	'	'	'
Note 15 - Segments and Geographical Information (Details) - Segments [Line Items]	'	'	'
Revenues by location	134,846	110,872	67,883
International [Member]	'	'	'
Note 15 - Segments and Geographical Information (Details) - Segments [Line Items]	'	'	'
Revenues by location	$16,282	$5,872	$682