YuMe (YUME) 10-K 10 Mar 17 2016 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Feb. 28, 2017	Jun. 30, 2016
Document Information [Line Items]
Entity Registrant Name	YuMe Inc
Entity Central Index Key	1,415,624
Trading Symbol	yume
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		34,038,483
Entity Public Float			$ 69,491,376
Document Type	10-K
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 34,700	$ 17,859
Marketable securities	25,751	30,600
Restricted cash		292
Accounts receivable, net	51,171	67,131
Prepaid expenses and other current assets	3,591	3,978
Total current assets	115,213	119,860
Marketable securities, long-term	5,241	11,724
Property, equipment and software, net	11,726	12,110
Goodwill	3,902	3,902
Intangible assets, net		659
Restricted cash, non-current	710	403
Deposits and other assets	587	416
Total assets	137,379	149,074
Current liabilities:
Accounts payable	10,775	12,080
Accrued digital media property owner costs	16,385	17,155
Accrued liabilities	12,192	16,767
Deferred revenue	132	214
Capital leases, current	8
Total current liabilities	39,492	46,216
Capital leases, non-current	13
Other long-term liabilities	631	77
Deferred tax liability		178
Total liabilities	40,136	46,471
Commitments and contingencies (Note 9)
Stockholders’ equity:
Preferred stock: $0.001 par value; 20,000,000 shares authorized, no shares issued and outstanding as of December 31, 2016 and December 31, 2015
Common stock: $0.001 par value; 200,000,000 shares authorized as of December 31, 2016 and 2015; 33,946,820 and 34,455,220 shares issued and outstanding as of December 31, 2016 and 2015, respectively	36	34
Additional paid-in-capital	159,550	150,001
Treasury stock: 2,019,575 shares and 66,666 shares as of December 31, 2016 and 2015, respectively	(7,105)
Accumulated deficit	(54,888)	(47,167)
Accumulated other comprehensive loss	(350)	(265)
Total stockholders’ equity	97,243	102,603
Total liabilities and stockholders’ equity	$ 137,379	$ 149,074

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	33,946,820	34,455,220
Common stock, outstanding (in shares)	33,946,820	34,455,220
Treasury stock, shares (in shares)	2,019,575	66,666

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 160,411		$ 173,254	$ 177,779
Cost of revenue	80,190		95,028	93,096
Gross profit	80,221		78,226	84,683
Operating expenses:
Sales and marketing	51,676		59,912	65,112
Research and development	10,968		10,937	5,908
General and administrative	22,513		23,584	21,736
Asset impairment	922
Restructuring	1,577	[1],[2],[3]
Total operating expenses	87,656		94,433	92,756
Loss from operations	(7,435)		(16,207)	(8,073)
Interest and other expense, net
Interest expense	(7)		(8)	(8)
Other expense, net	(299)		(230)	(888)
Total interest and other expense, net	(306)		(238)	(896)
Loss before income taxes	(7,741)		(16,445)	(8,969)
Income tax (expense) benefit	20		(300)	224
Net loss	$ (7,721)		$ (16,745)	$ (8,745)
Net loss per share:
Basic (in dollars per share)	$ (0.22)		$ (0.49)	$ (0.27)
Diluted (in dollars per share)	$ (0.22)		$ (0.49)	$ (0.27)
Weighted-average shares used to compute net loss per share:
Basic (in shares)	34,441		33,829	32,591
Diluted (in shares)	34,441		33,829	32,591
[1]	In accordance with the 2015 Executive Severance Plan, 25% of the chief executive officer's unvested equity holdings immediately accelerate to become vested if the chief executive officer is terminated for any reason other than cause. Stock-based compensation expense is a non-cash expense.
[2]	The Company exited a facility located in Redwood City, California on November 11, 2016. Facility exit expenses include rental payments the Company is required to make on the vacant office space and broker fees the Company will pay to find a new tenant to sublease the vacated office space.
[3]	Workforce reduction expenses include employee severance and temporary health insurance costs under the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA").

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net loss	$ (7,721)	$ (16,745)	$ (8,745)
Other comprehensive income (loss):
Foreign currency translation adjustments	(147)	(48)	(58)
Unrealized gain (loss) on marketable securities, net of tax	62	(57)	(22)
Other comprehensive loss	(85)	(105)	(80)
Comprehensive loss	$ (7,806)	$ (16,850)	$ (8,825)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Common Stock [Member]		Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2013	31,933,862		66,666
Balances at Dec. 31, 2013	$ 32			$ 127,690	$ (21,677)	$ (80)	$ 105,965
Issuance of common stock upon exercise of stock options and warrants (in shares)	801,691
Issuance of common stock upon exercise of stock options and warrants	$ 1			3,143			3,144
Issuance of common stock upon the vesting of restricted stock units cash used to net settle equity awards (in shares)	15,450
Issuance of common stock upon the vesting of restricted stock units cash used to net settle equity awards
Issuance of common stock in connection with employee stock purchase plan (in shares)	315,324
Issuance of common stock in connection with employee stock purchase plan				1,530			1,530
Stock-based compensation				6,134			6,134
Foreign currency translation adjustment						(58)	(58)
Net unrealized losses on marketable securities						(22)	(22)
Net loss					(8,745)		(8,745)
Balances (in shares) at Dec. 31, 2014	33,066,327		66,666
Balances at Dec. 31, 2014	$ 33			138,497	(30,422)	(160)	107,948
Unrealized gain (loss) on marketable securities, net of tax						(22)	(22)
Issuance of common stock upon exercise of stock options and warrants (in shares)	268,172
Issuance of common stock upon exercise of stock options and warrants				803			803
Issuance of common stock upon the vesting of restricted stock units cash used to net settle equity awards (in shares)	723,978
Issuance of common stock upon the vesting of restricted stock units cash used to net settle equity awards	$ 1			(44)			(43)
Issuance of common stock in connection with employee stock purchase plan (in shares)	396,743
Issuance of common stock in connection with employee stock purchase plan				1,322			1,322
Stock-based compensation				9,423			9,423
Foreign currency translation adjustment						(48)	(48)
Net unrealized losses on marketable securities						(57)	(57)
Net loss					(16,745)		(16,745)
Balances (in shares) at Dec. 31, 2015	34,455,220		66,666
Balances at Dec. 31, 2015	$ 34			150,001	(47,167)	(265)	102,603
Unrealized gain (loss) on marketable securities, net of tax						(57)	$ (57)
Issuance of common stock upon exercise of stock options and warrants (in shares)	12,434						12,000
Issuance of common stock upon exercise of stock options and warrants				21			$ 21
Issuance of common stock upon the vesting of restricted stock units cash used to net settle equity awards (in shares)	985,573
Issuance of common stock upon the vesting of restricted stock units cash used to net settle equity awards	$ 1			(797)			(796)
Issuance of common stock in connection with employee stock purchase plan (in shares)	446,502
Issuance of common stock in connection with employee stock purchase plan	$ 1			1,076			1,077
Stock-based compensation				9,249			9,249
Foreign currency translation adjustment						(147)	(147)
Net unrealized losses on marketable securities						62	62
Net loss					(7,721)		(7,721)
Balances (in shares) at Dec. 31, 2016	33,946,820		2,019,575
Balances at Dec. 31, 2016	$ 36		$ (7,105)	159,550	(54,888)	(350)	97,243
Repurchased shares pursuant with the stock repurchase plan (in shares)	(1,952,909)	[1]	(1,952,909)
Treasury Stock, Shares, Acquired	1,952,909	[1]	1,952,909
Repurchases of common stock (2)	$ 7,105	[1]	$ (7,105)				7,105
Unrealized gain (loss) on marketable securities, net of tax						$ 62	$ 62
[1]	Includes 27,202 treasury shares purchased in late December 2016 for $98,000 that had not yet settled as of December 31, 2016.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Operating activities:
Net income (loss)	$ (7,721,000)	$ (16,745,000)	$ (8,745,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	6,876,000	6,006,000	4,620,000
Stock-based compensation	8,712,000	8,879,000	5,774,000
Allowances for doubtful accounts receivable	777,000	963,000	1,154,000
Deferred income taxes	(178,000)	(253,000)	(336,000)
Amortization of premiums on marketable securities	294,000	422,000	498,000
Asset impairment	922,000
Changes in operating assets and liabilities:
Accounts receivable	14,992,000	347,000	(4,102,000)
Prepaid expenses and other current assets	222,000	(336,000)	(1,070,000)
Deposits and other assets	(286,000)	(32,000)	(22,000)
Accounts payable	(1,262,000)	381,000	4,515,000
Accrued digital media property owner costs	(770,000)	(1,122,000)	918,000
Accrued liabilities	(4,388,000)	384,000	3,704,000
Deferred revenue	(82,000)	16,000	(116,000)
Other liabilities	554,000	(40,000)	(22,000)
Net cash provided by (used in) operating activities	18,662,000	(1,130,000)	6,766,000
Investing activities:
Purchases of property and equipment	(2,055,000)	(2,824,000)	(5,888,000)
Capitalized software development costs	(4,215,000)	(3,666,000)	(1,996,000)
Purchases of marketable securities	(22,904,000)	(43,845,000)	(18,231,000)
Change in restricted cash	(33,000)	(403,000)
Net cash provided by (used in) investing activities	4,799,000	(21,108,000)	(15,509,000)
Financing activities:
Repayments of borrowings under capital leases	(2,000)	(41,000)	(340,000)
Proceeds from exercise of common stock options and employee stock purchase plan	1,082,000	2,127,000	4,574,000
Repurchases of common stock	(7,007,000)
Cash used to net-share settle equity awards	(781,000)
Net cash provided by (used in) financing activities	(6,708,000)	2,086,000	4,234,000
Effect of exchange rate changes on cash and cash equivalents	88,000	(48,000)	(58,000)
Change in cash and cash equivalents	16,841,000	(20,200,000)	(4,567,000)
Cash and cash equivalents—Beginning of period	17,859,000	38,059,000	42,626,000
Cash and cash equivalents—End of period	34,700,000	17,859,000	38,059,000
Supplemental disclosures of cash flow information:
Cash paid for interest			9,000
Cash paid for income taxes	588,000	426,000	930,000
Stock-based compensation capitalized for internal-use software	537,000	544,000	360,000
Non-cash investing and financing activities:
Purchases of property and equipment recorded in accounts payable		44,000	37,000
Purchases of property and equipment under capital lease obligations	24,000
Vesting of early exercised stock options			100,000
Maturities of Marketable Securities [Member]
Investing activities:
Marketable securities	34,006,000	29,630,000	9,400,000
Sale of Marketable Securities [Member]
Investing activities:
Marketable securities			$ 1,206,000

Note 1 - Organization and Descr

Note 1 - Organization and Description of Business	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Organization and D escription of Business Organization and Nature of Operations YuMe, Inc. (the “Company”) was incorporated in Delaware on December 16, 2004. 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”). 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; adoption of the Company’s product and solution offerings; 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, 2016
Notes to Financial Statements
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, except for India and France, which have U.S. dollar and British pound sterling functional currencies, respectively. 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 exchange rates in effect during the period. Translation adjustments are recorded within accumulated other comprehensive loss, a separate component of stockholders' equity, on the consolidated balance sheets. Foreign exchange transaction losses totaled $0.6 $0.5 $1.0 2016, 2015 2014, Cash and Cash Equivalents The Company invests a portion of its excess cash in money market funds. The Company considers all highly liquid financial instruments purchased with original maturities of three Marketable Securities M arketable securities are classified as available-for-sale and have consisted 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 must have a credit rating of A- 1/P 1 A2 three 12 12 12 24 24 12 Note 3 for additional information regarding the Company’s marketable securities. Restricted Cash The Company’s lease agreement for its New York City office requires a security deposit in the amount of $0.4 September 2027. July 1, 2020, $0.3 The lease agreement for the Company's previous New York City office required a security deposit in the amount of $0.3 second 2016. In the three September 30, 2016, $0.3 non-current in the condensed consolidated balance sheets. Foreign Currency Transaction Risk —Foreign Currency Forward Contracts The Company transacts business in various foreign currencies and in the second 2015 ’s foreign currency transactions. The Company may The Company does not use foreign currency forward contracts for trading purposes nor does it designate forward contracts as hedging instruments pursuant to ASC 815. The Company expects to continue to realize gains or losses with respect to its foreign currency exposures, net of gains or losses from its foreign currency forward contracts. The Company ’s ultimate realized gain or loss with respect to foreign currency exposures will generally depend on the size and type of cross-currency transactions that it enters into, the currency exchange rates associated with these exposures and changes in those rates, the net realized gain or loss on its foreign currency forward contracts and other factors. As of December 31, 2016, $3.6 2015 $0.7 2016 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 five may . C redit 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 receivable 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. In 2016, 2015 2014, $0.4 $0.5 $0.7 may No customers accounted for 10% December 31, 2016 2015. 12% 2016. No 10% 2015 2014. The following table presents the changes in the allowance for doubtful accounts receivable (in thousands): Years Ended December 31, 201 6 201 5 201 4 Allowance for doubtful accounts receivable: Balance – beginning of period $ 1,961 $ 1,471 $ 1,056 Allowance for doubtful accounts receivable 777 963 1,154 Doubtful accounts receivable write-offs (393 ) (473 ) (739 ) Balance – end of period $ 2,345 $ 1,961 $ 1,471 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 five 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 The Company capitalized $ 4.8 $4.2 $2.4 December 31, 2016, 2015 2014, $2.7 $1.6 $1.1 December 31, 2016, 2015 2014, Impairment of Long-lived Assets The Company evaluates its long-lived assets for impairment when circumstances indicate the carrying amount of an asset may in estimated useful lives during years ended December 31, 2016, 2015 2014. For internally developed software, the Company performs regular recoverability assessments in order to evaluate any impairment indicators or changes to useful lives. During the fourth 2016, 5.0 5.0 one $0.9 5.0 Deferred Rent The Company leases facilities worldwide under non-cancelable operating leases that expire through August 2024. $0.9 $0.4 December 31, 2016 2015, Revenue R ecognition 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) (2) (3) (4) three may one In the normal course of business, the Company acts as a facilitator in executing transactions with third identifying and contracting with third may 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 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) (2) third (3) 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. B ESP The Company recognizes revenue for media placements and 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 $0.5 $0.6 $1.7 December 31, 2016, 2015 2014, Stock-based Compensation T he 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. The Company estimates the forfeiture rate based on historical forfeitures of equity awards and adjusts the rate to reflect changes in facts and circumstances, if any. The Company will revise our estimated forfeiture rate if actual forfeitures differ from our initial estimates. 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. Goodwill Goodwill is not amortized, but is tested for impairment at least annually or as circumstances indicate the value may fourth December 3 1, may may two December 31, 2016, first no Intangible Assets Acquired intangible assets consist of acquired customer relationships and developed technology. 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 Restructuring On November 8, 2016, s board of directors approved a restructuring plan designed to reduce its operating expenses, realign its cost structure with revenue . The restructuring plan was implemented in the fourth 2016 first 2017. $1.6 fourth 2016. 7%, 420, Exit or Disposal Cost Obligations one Note 11 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. Deferred tax valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. The following table sets forth our deferred tax valuation allowance for the years ended December 31, 2016, 2015 2014. Balance at Beginning of Year Charged to Other A ccounts Balance End of Year (in thousands) 2014 $ 7,524 $ 1,633 $ 9,157 2015 $ 9,157 $ 2,605 $ 11,762 2016 $ 11,762 $ 3,212 $ 14,974 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 (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) 50% Recently Issued and Adopted Accounting Standards In May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606) 2014 09 December 15, 2017, December 15, 2016. January 1, 2018. 2017. The Company currently expects to apply the modified retrospective method of adoption; however, it has not yet finalized its transition method, but expects to do so in 2017 In August 2014, 2014 15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern one 2014 15 December 15, 2016 December 31, 2016. In April 2015, 2015 05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement , 2015 05 2015 05 December 15, 2015. January 1, 2016 In January 2016, 2016 01, Financial Instruments--Overall (Subtopic 825 10) Recognition and Measurement of Financial Assets and Financial Liabilities December 15, 2017, first In February 2016, 2016 02 Leases (Topic 842) December 15, 2018. In March 2016, 2016 09, Compensation - Stock Compensation (Topic 718) January 1, 2017, January 1, 2017 In January 2017, 2017 04, Intangibles - Goodwill and Other (Topic 350). January 1, 2020. January 1, 2017.

Note 3 - Cash, Cash Equivalents

Note 3 - Cash, Cash Equivalents, Marketable Securities and Derivative Instruments	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Cash, Cash Equivalents, and Marketable Securities [Text Block]	3. Cash , Cash Equivalents , Marketable Securities and Derivative Instruments The Company ’s cash equivalents consist of highly liquid fixed-income investments with original maturities of three . 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 24 . Non twelve December 31, 2016. Beginning in the second 2015, ment of certain assets and liabilities denominated in non-functional currencies. The Company’s foreign currency forward contracts have terms of no more than 12 2 The cost, gross unrealized gains and losses and fair value of the Company’s marketable securities and foreign currency forward contracts consisted of the following as of December 31, 2016 2015 Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 201 6 : Cash $ 22,750 $ — $ — $ 22,750 Cash equivalents: Money market funds 10,653 — — 10,653 Commercial paper 1,297 — — 1,297 Total cash and cash equivalents 34,700 — — 34,700 Marketable securities: Corporate bonds 16,780 — (17 ) 16,763 Government and agency bonds 9,050 1 (8 ) 9,043 Commercial paper 5,186 — — 5,186 Total marketable securities 31,016 1 (25 ) 30,992 Total cash, cash equivalents and marketable securities $ 65,716 $ 1 $ (25 ) $ 65,692 Foreign currency forward contracts, net ( 1) $ — $ 11 $ (16 ) $ (5 ) Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 201 5 : Cash $ 7,638 $ — $ — $ 7,638 Cash equivalents: Money market funds 10,221 — — 10,221 Total cash and cash equivalents 17,859 — — 17,859 Marketable securities: Corporate bonds 31,372 — (78 ) 31,294 Government and agency bonds 6,544 — (8 ) 6,536 Commercial paper 4,494 — — 4,494 Total marketable securities 42,410 — (86 ) 42,324 Total cash, cash equivalents and marketable securities $ 60,269 $ — $ (86 ) $ 60,183 Foreign currency forward contracts, net ( 1) $ — $ 19 $ (29 ) $ (10 ) (1) Included in “Accrued liabilities” in the accompanying consolidated balance sheet as of December 31. Unrealized gains and losses, net of taxes, are included in “Accumulated other comprehensive loss,” which is reflected as a separate component of stockholders’ equity (deficit) on the consolidated balance sheets.

Note 4 - Fair Value of Financia

Note 4 - Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Fair Value Disclosures [Text Block]	4. 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. Marketable securities with final maturities of at least three 12 one two may 2 2 2 The following tables present information about the Company ’s money market funds, marketable securities and foreign currency forward contracts measured at fair value on a recurring basis as of December 31, 2016 2015 Fair Value M easurements at December 31, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 10,653 $ — $ — $ 10,653 Commercial paper — 1,297 — 1,297 Total cash equivalents $ 10,653 $ 1,297 $ — $ 11,950 Marketable securities : Corporate bonds $ — $ 16,763 $ — $ 16,763 Government and agency bonds — 9,043 — 9,043 Commercial paper — 5,186 — 5,186 Total marketable securities $ — $ 30,992 $ — $ 30,992 Foreign currency forward contracts, net $ — $ (5 ) $ — $ (5 ) Fair Value M easurements at December 31, 2015 Level 1 Level 2 Level 3 Total Money market funds $ 10,221 $ — $ — $ 10,221 Marketable securities : Corporate bonds $ — $ 31,294 $ — $ 31,294 Government and agency bonds — 6,536 — 6,536 Commercial paper — 4,494 — 4,494 Total marketable securities $ — $ 42,324 $ — $ 42,324 Foreign currency forward contracts, net $ — $ (10 ) $ — $ (10 )

Note 5 - Property, Equipment, a

Note 5 - Property, Equipment, and Software	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	5. Property, Equipment and Software For internally developed software, the Company performs regular recoverability assessments in order to evaluate any impairment indicators or changes to useful lives. During the fourth 2016, 5.0 5.0 one $0.9 5.0 Property, equipment and software consisted of the following (in thousands): December 31, 201 6 201 5 Office furniture and fixtures $ 750 $ 793 Equipment and computers 14,042 12,597 Leasehold improvements 2,074 1,965 Software 2,167 2,011 Internally developed software costs (1) 15,937 12,110 Total property, equipment and software 34,970 29,476 Less: accumulated depreciation and amortization (23,244 ) (17,366 ) Property, equipment and software, net $ 11,726 $ 12,110 (1) Internally developed software costs exclude $0.9 December 31, 2016 5.0, ’s supply-side platform for publishers. Depreciation and amortization expense, including amortization of internal use software costs, was approximately $ 6.9 $6.0 $4.6 December 31, 2016, 2015 2014, Assets recorded under capital leases consist primarily of data center equipment and were as follows (in thousands): December 31, 201 6 201 5 Gross assets under capital leases $ 657 $ 633 Less: accumulated depreciation (636 ) (633 ) Net assets under capital leases $ 21 $ —

Note 6 - Goodwill and Intangibl

Note 6 - Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	6. Goodwill and Intangible Assets 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, 201 6 : Developed technology $ 2,950 $ (2,950 ) $ — — Customer relationships 104 (104 ) — — $ 3,054 $ (3,054 ) $ — Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Life (years) December 31, 201 5 : Developed technology $ 2,950 $ (2,300 ) $ 650 1.0 Customer relationships 104 (95 ) 9 0.4 $ 3,054 $ (2,395 ) $ 659 Amortization expense for each of the years ended December 31, 2016, 2015 2014 $ 0.7

Note 7 - Accrued Liabilities

Note 7 - Accrued Liabilities	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	7. Accrued Liabilities Accrued liabilities consisted of the following (in thousands): December 31, 201 6 201 5 Accrued compensation $ 4,871 $ 5,210 Accrued vacation and other employee benefits 1,392 3,849 Accrued customer incentives 3,425 4,945 Accrued taxes — 458 Other accrued expenses 2,504 2,305 Total accrued liabilities $ 12,192 $ 16,767

Note 8 - Borrowings

Note 8 - Borrowings	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Debt Disclosure [Text Block]	8. Borrowings In November 2014, entered into a Loan and Security Agreement with Silicon Valley Bank (“SVB”) to borrow up to a maximum of $25.0 1.6 1.0. one 1.0% s Loan and Security Agreement with SVB expired in early November 2016.

Note 9 - Commitments and Contin

Note 9 - Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	9. Commitments and Contingencies Leases The Company leases office facilities under various non-cancellable operating leases that expire through September 2027. $3.5 $3.0 $2.7 December 31, 2016, 2015 2014, The Company also has capital lease obligations that mature in July 2019 . 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, 2016 December 2017. Future Payments F uture minimum payments under these arrangements as of December 31, 2016 Payments Due by Period Total Less Than 1 Year 1 – 3 Years 3 – 5 Years More Than 5 Years Operating lease obligations $ 17,282 $ 3,327 $ 6,864 $ 3,230 $ 3,861 Capital lease obligations 21 8 13 — — Traffic acquisition costs and other purchase commitments 509 509 — — — Total minimum payments $ 17,812 $ 3,844 $ 6,877 $ 3,230 $ 3,861 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, 2016 Legal Proceedings From time to time the Company may ’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 third may While matters may

Note 10 - Stockholders' Equity

Note 10 - Stockholders' Equity	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	10. Stockholders ’ Equity Preferred Stock In association with the IPO, the board of directors authorized the Company to issue up to 20,000,000 $0.001 December 31, 2016 2015, Common Stock At December 31, 2016 2015 33,946,820 34,455,220 December 31, 2016: Number of Shares Outstanding at December 31, 201 5 34,455,220 Option exercises 12,434 RSUs released, net of shares withheld for taxes 985,573 Common stock issued in connection with employee stock purchase plan 446,502 Repurchases of common stock (1,952,909 ) Outstanding at December 31 , 2016 33,946,820 Stock Repurchase Program On February 18, 2016, board of directors authorized a $10 market conditions and other factors. Purchases under this repurchase program are made in the open market and complied with Rule 10b 18 1934, Stock repurchase activity under the Company’s stock repurchase program during 2016 Total Number of Shares Repurchased Average Price Paid per Share (1) Amount of Repurchase Cumulative balance at December 31, 2015 — $ — $ — Repurchases of common stock (2) 1,952,909 $ 3.64 7,105 Cumulative balance at December 31, 2016 1,952,909 $ 3.64 $ 7,105 (1) Average price paid per share includes commission. (2) Includes 27,202 December 2016 $98,000 December 31, 2016. Treasury Stock In addition to the 1,952,909 2016, he Company has 66,666 2,019,575 Equity Incentive Plans The Company ’s 2004 “2004 85% 25% first 36 ten 10% five 2004 2004 . In July 2013, 2013 2013 August 6, 2013. 2013 2004 2013 July 23, 2023. 2013 100% 25% first 36 ten 10% five 2,000,000 2013 January 1 5% December 31 may The following table summarizes option activity: Number of Shares (in thousands) Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life ( y ears) Aggregate Intrinsic Value ( 1 ) (in thousands) Balance at December 31 , 2015 4,360 $ 5.04 6.30 $ 1,480 Granted (2) 305 $ 3.61 Exercised (12 ) $ 1.66 Canceled and forfeited (3) (899 ) $ 4.47 Balance at December 31 , 2016 3,754 $ 5.08 4.96 $ 1,671 Vested as of December 31, 201 6 and expected to vest thereafter (4) 3,720 $ 5.07 4.94 $ 1,669 Vested and exercisable as of December 31, 201 6 3,339 $ 4.90 4.69 $ 1,654 (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 granted include 0.7 below for more information. (3) Options cancelled and forfeited include 0.7 Modification of Employee Stock Options below for more information. (4) Options expected to vest reflect an estimated forfeiture rate. The weighted average grant date fair va lue of options granted was $1.93, $2.78 $3.76 2016, 2015 2014, 2016 was approximately $0.5 $2.0 2015 2014, The following table summarizes restricted stock unit activity: Number of Shares (in thousands) Weighted Average Fair Value at Grant Weighted Average Remaining Contractual Life (years) Aggregate Intrinsic Value (1) (in thousands) Balance at December 31, 201 5 1,619 $ 5.39 0.99 $ 5,681 Granted 1,914 $ 3.84 Released (1,218 ) $ 5.19 Canceled and forfeited (636 ) $ 4.26 Balance at December 31, 201 6 1,678 $ 4.19 1.05 $ 6,663 (1) T he intrinsic value of RSUs is based on the Company’s closing stock price as reported by the New York Stock Exchange on that date. The total grant date fair value of restricted stock units vested during the year s ended December 31, 2016, 2015 2014 $6.3 $4.3 $0.1 December 31, 2016, 2015 2014 Modification of Employee Stock Options On January 2, 2015, 0.7 $7.00 $5.14 ’s common stock on the New York Stock Exchange on January 2, 2015. $0.4 December 31, 2016, Employee Stock Purchase Plan In July 2013, 2013 2013 August 6, 2013. 2013 15% 85% first . Purchases are accomplished through participation in discrete offering periods. The 2013 423 500,000 2013 and shares reserved for issuance increase January 1 1% December 31 may The fair value of stock purchased through the 2013 first make assumptions and judgments about the variables used in the calculation, including the volatility of the Company's common stock, a risk-free interest rate, expected dividends, and estimated forfeitures. To the extent actual results differ from the estimates, the difference will be recorded as a cumulative adjustment in the period estimates are revised. 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 six 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, 2016 Year Ended December 31, 2015 Year Ended December 31, 2014 Expected term (years) 0.50 0.50 0.50 Volatility 56% 56% 80% Risk-free interest rate 0.21% - 0.45% 0.07% - 0.36% 0.05% - 0.08% Dividend yield — — — Shares Reserved for Future Issuance At December 31, 201 6 2015, December 31, 201 6 201 5 Common stock reserved: Common stock options 3,754,122 4,360,015 Restricted stock units 1,678,448 1,618,543 Shares available for future issuance under the 2013 Plan 4,952,254 3,680,862 Employee stock purchase plan 335,984 437,934 10,720,808 10,097,354 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 s granted to employees is determined using the Black-Scholes option valuation model with the following assumptions: Years Ended December 31, 201 6 201 5 201 4 Expected term (years) 6.00 6.00 6.00 Volatility 56% 56% - 80% 80% Risk-free interest rate 1.90% 1.54% - 1.79% 1.74% - 2.02% Dividend yield — — — Weighted-average fair value $1.93 $2.78 $3.76 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, 201 6 201 5 201 4 Cost of revenue $ 178 $ 312 $ 342 Sales and marketing 2,612 3,403 2,776 Research and development (1) 1,200 1,111 482 General and administrative (2) 4,434 4,053 2,174 Total stock-based compensation (2) $ 8,424 $ 8,879 $ 5,774 (1) Excludes $ 537,000, $544,000 $360,000 December 31, 2016, 2015 2014, (2) Excludes $ 288,000 December 31, 2016 $288,000 Note 11 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, 201 6, 2015 2014. December 31, 2016, $6.8 1.72

Note 11 - Restructuring

Note 11 - Restructuring	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	11. Restructuring On November 8, 2016 , the Company’s board of directors approved a restructuring plan designed to reduce its operating expenses, realign its cost structure with revenue . The restructuring plan was implemented in the fourth 2016 first 2017. $1.6 fourth 2016. 7%, December 31, 2016, $0.8 first 2017. Restructuring expenses incurred in 2016 Workforce R eduction E xpenses (1) Stock-Based Compensation Expense Acceleration (2) Facility Exit Expenses (3) Total Restructuring $ 1,172 $ 288 $ 117 $ 1,577 (1) Workforce reduction expenses include employee severance and temporary health insurance costs under the Consolidated Omnibus Budget Reconciliation Act of 1985 (2) In accordance with the 2015 25% ’s unvested equity holdings immediately accelerate to become vested if the chief executive officer is terminated for any reason other than cause. (3) The Company exited a facility located in Redwood City, California on November 11, 2016. tenant

Note 12 - Net Loss Per Share

Note 12 - Net Loss Per Share	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Earnings Per Share [Text Block]	12. Net Loss per Share Basic and diluted net loss per common share is presented in conformity with the treasury stock method. Basic net loss per common share is computed by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding, including potential dilutive common shares assuming the dilutive effect of outstanding stock options. The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data): Years Ended December 31, 201 6 201 5 201 4 Numerator: Net loss $ (7,721 ) $ (16,745 ) $ (8,745 ) Denominator: Weighted-average shares used in computing net loss per share: Basic 34,441 33,829 32,591 Weighted-average effect of potentially dilutive shares: Employee stock options and restricted stock units — — — C ommon stock warrants and employee stock purchase plan — — — Diluted 34,441 33,829 32,591 Net loss per share: Basic $ (0.22 ) $ (0.49 ) $ (0.27 ) Diluted $ (0.22 ) $ (0.49 ) $ (0.27 ) The following equity shares were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented (in thousands): As of December 31, 201 6 201 5 201 4 Stock options 4,133 4,723 5,263 Restricted stock units 552 499 657 C ommon stock warrants — 6 25 Employee stock purchase plan 48 110 24

Note 13 - Income Taxes

Note 13 - Income Taxes	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
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 loss before income taxes for the periods presented (in thousands): Years Ended December 31, 201 6 201 5 201 4 Domestic $ (8,507 ) $ (17,604 ) $ (9,899 ) Foreign 766 1,159 930 Total $ (7,741 ) $ (16,445 ) $ (8,969 ) The components of income tax (expense) benefit are as follows (in thousands): Years Ended December 31, 201 6 201 5 201 4 Current: Federal $ — $ — $ 21 State 42 (29 ) 270 Foreign (253 ) (524 ) (403 ) Total (211 ) (553 ) (112 ) Deferred: Federal 221 221 221 State 11 12 105 Foreign (1 ) 20 10 Total 231 253 336 Total income tax (expense) benefit $ 20 $ (300 ) $ 224 The primary difference s 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, 201 6 201 5 201 4 Tax at federal statutory rate 34.0 % 34.0 % 34.0 % State, net of federal effect 0.5 (0.1 ) 4.2 Foreign taxes (4.2 ) (2.8 ) (4.4 ) Foreign rate differential 3.4 2.4 3.5 Stock-based compensation (3.8 ) (4.6 ) (9.7 ) Change in valuation allowance (31.9 ) (31.7 ) (28.8 ) Other non-deductible expenses (0.3 ) (0.2 ) (0.6 ) Other 2.6 1.2 4.3 Effective tax rate 0.3 % (1.8 ) % 2.5 % 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, 201 6 201 5 Deferred tax assets: Accruals and reserves $ 1,714 $ 1,955 Net operating loss carryforwards 10,396 8,547 Tax credit carryforwards 1,521 1,697 Stock-based compensation 3,324 1,969 Foreign taxes 53 54 Total deferred tax assets 17,008 14,222 Fixed assets (1,988 ) (1,799 ) State taxes 7 (607 ) Purchased intangible assets — (232 ) Total deferred tax liabilities (1,981 ) (2,638 ) Valuation allowance (14,974 ) (11,762 ) Total net deferred tax liabilities $ 53 $ (178 ) A valuation allowance is provided when it is more likely than not that the deferred tax assets will not be realized. As of December 31, 2016 2015, December 31, 2016 2015 $3.2 $2.6 $1.6 December 31, 2016, 2015 2014, As of December 31, 201 6, $27.2 2025. December 31, 2016, $20.7 2017. As of December 31, 201 6, $1.0 2025. As of December 31, 2016, $1.1 $0.3 Internal Revenue Code section 382 382 382 Limitation. Management has determined that any limitation imposed by Section 382 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 ear nings 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 December 31, 2016, $2.3 Uncertain Tax Positions A reconciliation of the beginning and ending balances of the unrecognized tax benefits during the years ended December 31, 2016, 2015 2014 Years Ended December 31, 201 6 201 5 201 4 Unrecognized benefit – beginning of period $ 580 $ 459 $ 358 Gross increases – current year tax positions 130 121 101 Gross decreases – prior year tax positions (76 ) — — Unrecognized benefit – end of period $ 634 $ 580 $ 459 The entire amount of any unrecognized tax benefits would 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 20 12 2015 may

Note 14 - Segments and Geograph

Note 14 - Segments and Geographical Information	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	14. 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 one Years Ended December 31, 201 6 201 5 201 4 Domestic $ 147,907 $ 147,601 $ 149,617 International 12,504 25,653 28,162 Total revenue $ 160,411 $ 173,254 $ 177,779 The Company ’s long-lived assets are primarily located in the United States.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2016
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”).
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.
Significant Risks and Uncertainties Policy [Policy Text Block]	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; adoption of the Company’s product and solution offerings; 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.
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, except for India and France, which have U.S. dollar and British pound sterling functional currencies, respectively. 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 exchange rates in effect during the period. Translation adjustments are recorded within accumulated other comprehensive loss, a separate component of stockholders' equity, on the consolidated balance sheets. Foreign exchange transaction losses totaled $0.6 $0.5 $1.0 2016, 2015 2014,
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents The Company invests a portion of its excess cash in money market funds. The Company considers all highly liquid financial instruments purchased with original maturities of three
Marketable Securities, Policy [Policy Text Block]	Marketable Securities M arketable securities are classified as available-for-sale and have consisted 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 must have a credit rating of A- 1/P 1 A2 three 12 12 12 24 24 12 Note 3 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 Company’s lease agreement for its New York City office requires a security deposit in the amount of $0.4 September 2027. July 1, 2020, $0.3 The lease agreement for the Company's previous New York City office required a security deposit in the amount of $0.3 second 2016. In the three September 30, 2016, $0.3 non-current in the condensed consolidated balance sheets.
Derivatives, Policy [Policy Text Block]	Foreign Currency Transaction Risk —Foreign Currency Forward Contracts The Company transacts business in various foreign currencies and in the second 2015 ’s foreign currency transactions. The Company may The Company does not use foreign currency forward contracts for trading purposes nor does it designate forward contracts as hedging instruments pursuant to ASC 815. The Company expects to continue to realize gains or losses with respect to its foreign currency exposures, net of gains or losses from its foreign currency forward contracts. The Company ’s ultimate realized gain or loss with respect to foreign currency exposures will generally depend on the size and type of cross-currency transactions that it enters into, the currency exchange rates associated with these exposures and changes in those rates, the net realized gain or loss on its foreign currency forward contracts and other factors. As of December 31, 2016, $3.6 2015 $0.7 2016
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 five may . C redit 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 receivable 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. In 2016, 2015 2014, $0.4 $0.5 $0.7 may No customers accounted for 10% December 31, 2016 2015. 12% 2016. 10% 2015 2014. The following table presents the changes in the allowance for doubtful accounts receivable (in thousands): Years Ended December 31, 201 6 201 5 201 4 Allowance for doubtful accounts receivable: Balance – beginning of period $ 1,961 $ 1,471 $ 1,056 Allowance for doubtful accounts receivable 777 963 1,154 Doubtful accounts receivable write-offs (393 ) (473 ) (739 ) Balance – end of period $ 2,345 $ 1,961 $ 1,471
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 five
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 The Company capitalized $ 4.8 $4.2 $2.4 December 31, 2016, 2015 2014, $2.7 $1.6 $1.1 December 31, 2016, 2015 2014,
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 in estimated useful lives during years ended December 31, 2016, 2015 2014. For internally developed software, the Company performs regular recoverability assessments in order to evaluate any impairment indicators or changes to useful lives. During the fourth 2016, 5.0 5.0 one $0.9 5.0
Deferred Rent [Policy Text Block]	Deferred Rent The Company leases facilities worldwide under non-cancelable operating leases that expire through August 2024. $0.9 $0.4 December 31, 2016 2015,
Revenue Recognition, Policy [Policy Text Block]	Revenue R ecognition 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) (2) (3) (4) three may one In the normal course of business, the Company acts as a facilitator in executing transactions with third identifying and contracting with third may 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 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) (2) third (3) 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. B ESP The Company recognizes revenue for media placements and 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 $0.5 $0.6 $1.7 December 31, 2016, 2015 2014,
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock-based Compensation T he 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. The Company estimates the forfeiture rate based on historical forfeitures of equity awards and adjusts the rate to reflect changes in facts and circumstances, if any. The Company will revise our estimated forfeiture rate if actual forfeitures differ from our initial estimates.
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.
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 fourth December 3 1, may may two December 31, 2016, first
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	Intangible Assets Acquired intangible assets consist of acquired customer relationships and developed technology. 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
Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block]	Restructuring On November 8, 2016, s board of directors approved a restructuring plan designed to reduce its operating expenses, realign its cost structure with revenue . The restructuring plan was implemented in the fourth 2016 first 2017. $1.6 fourth 2016. 7%, 420, Exit or Disposal Cost Obligations one Note 11
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. Deferred tax valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized. The following table sets forth our deferred tax valuation allowance for the years ended December 31, 2016, 2015 2014. Balance at Beginning of Year Charged to Other A ccounts Balance End of Year (in thousands) 2014 $ 7,524 $ 1,633 $ 9,157 2015 $ 9,157 $ 2,605 $ 11,762 2016 $ 11,762 $ 3,212 $ 14,974 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 (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) 50%
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued and Adopted Accounting Standards In May 2014, 2014 09, Revenue from Contracts with Customers (Topic 606) 2014 09 December 15, 2017, December 15, 2016. January 1, 2018. 2017. The Company currently expects to apply the modified retrospective method of adoption; however, it has not yet finalized its transition method, but expects to do so in 2017 In August 2014, 2014 15, Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern one 2014 15 December 15, 2016 December 31, 2016. In April 2015, 2015 05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement , 2015 05 2015 05 December 15, 2015. January 1, 2016 In January 2016, 2016 01, Financial Instruments--Overall (Subtopic 825 10) Recognition and Measurement of Financial Assets and Financial Liabilities December 15, 2017, first In February 2016, 2016 02 Leases (Topic 842) December 15, 2018. In March 2016, 2016 09, Compensation - Stock Compensation (Topic 718) January 1, 2017, January 1, 2017 In January 2017, 2017 04, Intangibles - Goodwill and Other (Topic 350). January 1, 2020. January 1, 2017.

Note 2 - Summary of Significa23

Note 2 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Allowance for Credit Losses on Financing Receivables [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Allowance for doubtful accounts receivable: Balance – beginning of period $ 1,961 $ 1,471 $ 1,056 Allowance for doubtful accounts receivable 777 963 1,154 Doubtful accounts receivable write-offs (393 ) (473 ) (739 ) Balance – end of period $ 2,345 $ 1,961 $ 1,471
Summary of Valuation Allowance [Table Text Block]	Balance at Beginning of Year Charged to Other A ccounts Balance End of Year (in thousands) 2014 $ 7,524 $ 1,633 $ 9,157 2015 $ 9,157 $ 2,605 $ 11,762 2016 $ 11,762 $ 3,212 $ 14,974

Note 3 - Cash, Cash Equivalen24

Note 3 - Cash, Cash Equivalents, Marketable Securities and Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Cash, Cash Equivalents and Investments [Table Text Block]	Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 201 6 : Cash $ 22,750 $ — $ — $ 22,750 Cash equivalents: Money market funds 10,653 — — 10,653 Commercial paper 1,297 — — 1,297 Total cash and cash equivalents 34,700 — — 34,700 Marketable securities: Corporate bonds 16,780 — (17 ) 16,763 Government and agency bonds 9,050 1 (8 ) 9,043 Commercial paper 5,186 — — 5,186 Total marketable securities 31,016 1 (25 ) 30,992 Total cash, cash equivalents and marketable securities $ 65,716 $ 1 $ (25 ) $ 65,692 Foreign currency forward contracts, net ( 1) $ — $ 11 $ (16 ) $ (5 ) Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value December 31, 201 5 : Cash $ 7,638 $ — $ — $ 7,638 Cash equivalents: Money market funds 10,221 — — 10,221 Total cash and cash equivalents 17,859 — — 17,859 Marketable securities: Corporate bonds 31,372 — (78 ) 31,294 Government and agency bonds 6,544 — (8 ) 6,536 Commercial paper 4,494 — — 4,494 Total marketable securities 42,410 — (86 ) 42,324 Total cash, cash equivalents and marketable securities $ 60,269 $ — $ (86 ) $ 60,183 Foreign currency forward contracts, net ( 1) $ — $ 19 $ (29 ) $ (10 )

Note 4 - Fair Value of Financ25

Note 4 - Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	Fair Value M easurements at December 31, 2016 Level 1 Level 2 Level 3 Total Cash equivalents: Money market funds $ 10,653 $ — $ — $ 10,653 Commercial paper — 1,297 — 1,297 Total cash equivalents $ 10,653 $ 1,297 $ — $ 11,950 Marketable securities : Corporate bonds $ — $ 16,763 $ — $ 16,763 Government and agency bonds — 9,043 — 9,043 Commercial paper — 5,186 — 5,186 Total marketable securities $ — $ 30,992 $ — $ 30,992 Foreign currency forward contracts, net $ — $ (5 ) $ — $ (5 ) Fair Value M easurements at December 31, 2015 Level 1 Level 2 Level 3 Total Money market funds $ 10,221 $ — $ — $ 10,221 Marketable securities : Corporate bonds $ — $ 31,294 $ — $ 31,294 Government and agency bonds — 6,536 — 6,536 Commercial paper — 4,494 — 4,494 Total marketable securities $ — $ 42,324 $ — $ 42,324 Foreign currency forward contracts, net $ — $ (10 ) $ — $ (10 )

Note 5 - Property, Equipment,26

Note 5 - Property, Equipment, and Software (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Property, Plant and Equipment [Table Text Block]	December 31, 201 6 201 5 Office furniture and fixtures $ 750 $ 793 Equipment and computers 14,042 12,597 Leasehold improvements 2,074 1,965 Software 2,167 2,011 Internally developed software costs (1) 15,937 12,110 Total property, equipment and software 34,970 29,476 Less: accumulated depreciation and amortization (23,244 ) (17,366 ) Property, equipment and software, net $ 11,726 $ 12,110
Schedule of Capital Leased Assets [Table Text Block]	December 31, 201 6 201 5 Gross assets under capital leases $ 657 $ 633 Less: accumulated depreciation (636 ) (633 ) Net assets under capital leases $ 21 $ —

Note 6 - Goodwill and Intangi27

Note 6 - Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Life (years) December 31, 201 6 : Developed technology $ 2,950 $ (2,950 ) $ — — Customer relationships 104 (104 ) — — $ 3,054 $ (3,054 ) $ — Gross Carrying Amount Accumulated Amortization Net Carrying Amount Weighted-Average Remaining Life (years) December 31, 201 5 : Developed technology $ 2,950 $ (2,300 ) $ 650 1.0 Customer relationships 104 (95 ) 9 0.4 $ 3,054 $ (2,395 ) $ 659

Note 7 - Accrued Liabilities (T

Note 7 - Accrued Liabilities (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	December 31, 201 6 201 5 Accrued compensation $ 4,871 $ 5,210 Accrued vacation and other employee benefits 1,392 3,849 Accrued customer incentives 3,425 4,945 Accrued taxes — 458 Other accrued expenses 2,504 2,305 Total accrued liabilities $ 12,192 $ 16,767

Note 9 - Commitments and Cont29

Note 9 - Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
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 $ 17,282 $ 3,327 $ 6,864 $ 3,230 $ 3,861 Capital lease obligations 21 8 13 — — Traffic acquisition costs and other purchase commitments 509 509 — — — Total minimum payments $ 17,812 $ 3,844 $ 6,877 $ 3,230 $ 3,861

Note 10 - Stockholders' Equity

Note 10 - Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Common Stock Outstanding Roll Forward [Table Text Block]	Number of Shares Outstanding at December 31, 201 5 34,455,220 Option exercises 12,434 RSUs released, net of shares withheld for taxes 985,573 Common stock issued in connection with employee stock purchase plan 446,502 Repurchases of common stock (1,952,909 ) Outstanding at December 31 , 2016 33,946,820
Class of Treasury Stock [Table Text Block]	Total Number of Shares Repurchased Average Price Paid per Share (1) Amount of Repurchase Cumulative balance at December 31, 2015 — $ — $ — Repurchases of common stock (2) 1,952,909 $ 3.64 7,105 Cumulative balance at December 31, 2016 1,952,909 $ 3.64 $ 7,105
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Number of Shares (in thousands) Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life ( y ears) Aggregate Intrinsic Value ( 1 ) (in thousands) Balance at December 31 , 2015 4,360 $ 5.04 6.30 $ 1,480 Granted (2) 305 $ 3.61 Exercised (12 ) $ 1.66 Canceled and forfeited (3) (899 ) $ 4.47 Balance at December 31 , 2016 3,754 $ 5.08 4.96 $ 1,671 Vested as of December 31, 201 6 and expected to vest thereafter (4) 3,720 $ 5.07 4.94 $ 1,669 Vested and exercisable as of December 31, 201 6 3,339 $ 4.90 4.69 $ 1,654
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	Number of Shares (in thousands) Weighted Average Fair Value at Grant Weighted Average Remaining Contractual Life (years) Aggregate Intrinsic Value (1) (in thousands) Balance at December 31, 201 5 1,619 $ 5.39 0.99 $ 5,681 Granted 1,914 $ 3.84 Released (1,218 ) $ 5.19 Canceled and forfeited (636 ) $ 4.26 Balance at December 31, 201 6 1,678 $ 4.19 1.05 $ 6,663
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Year Ended December 31, 2016 Year Ended December 31, 2015 Year Ended December 31, 2014 Expected term (years) 0.50 0.50 0.50 Volatility 56% 56% 80% Risk-free interest rate 0.21% - 0.45% 0.07% - 0.36% 0.05% - 0.08% Dividend yield — — —
Schedule Of Common Stock Reserved For Future Issuance [Table Text Block]	December 31, 201 6 201 5 Common stock reserved: Common stock options 3,754,122 4,360,015 Restricted stock units 1,678,448 1,618,543 Shares available for future issuance under the 2013 Plan 4,952,254 3,680,862 Employee stock purchase plan 335,984 437,934 10,720,808 10,097,354
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Cost of revenue $ 178 $ 312 $ 342 Sales and marketing 2,612 3,403 2,776 Research and development (1) 1,200 1,111 482 General and administrative (2) 4,434 4,053 2,174 Total stock-based compensation (2) $ 8,424 $ 8,879 $ 5,774
Employee [Member]
Notes Tables
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Expected term (years) 6.00 6.00 6.00 Volatility 56% 56% - 80% 80% Risk-free interest rate 1.90% 1.54% - 1.79% 1.74% - 2.02% Dividend yield — — — Weighted-average fair value $1.93 $2.78 $3.76

Note 11 - Restructuring (Tables

Note 11 - Restructuring (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Restructuring and Related Costs [Table Text Block]	Workforce R eduction E xpenses (1) Stock-Based Compensation Expense Acceleration (2) Facility Exit Expenses (3) Total Restructuring $ 1,172 $ 288 $ 117 $ 1,577

Note 12 - Net Loss Per Share (T

Note 12 - Net Loss Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Numerator: Net loss $ (7,721 ) $ (16,745 ) $ (8,745 ) Denominator: Weighted-average shares used in computing net loss per share: Basic 34,441 33,829 32,591 Weighted-average effect of potentially dilutive shares: Employee stock options and restricted stock units — — — C ommon stock warrants and employee stock purchase plan — — — Diluted 34,441 33,829 32,591 Net loss per share: Basic $ (0.22 ) $ (0.49 ) $ (0.27 ) Diluted $ (0.22 ) $ (0.49 ) $ (0.27 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	As of December 31, 201 6 201 5 201 4 Stock options 4,133 4,723 5,263 Restricted stock units 552 499 657 C ommon stock warrants — 6 25 Employee stock purchase plan 48 110 24

Note 13 - Income Taxes (Tables)

Note 13 - Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Domestic $ (8,507 ) $ (17,604 ) $ (9,899 ) Foreign 766 1,159 930 Total $ (7,741 ) $ (16,445 ) $ (8,969 )
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Current: Federal $ — $ — $ 21 State 42 (29 ) 270 Foreign (253 ) (524 ) (403 ) Total (211 ) (553 ) (112 ) Deferred: Federal 221 221 221 State 11 12 105 Foreign (1 ) 20 10 Total 231 253 336 Total income tax (expense) benefit $ 20 $ (300 ) $ 224
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Tax at federal statutory rate 34.0 % 34.0 % 34.0 % State, net of federal effect 0.5 (0.1 ) 4.2 Foreign taxes (4.2 ) (2.8 ) (4.4 ) Foreign rate differential 3.4 2.4 3.5 Stock-based compensation (3.8 ) (4.6 ) (9.7 ) Change in valuation allowance (31.9 ) (31.7 ) (28.8 ) Other non-deductible expenses (0.3 ) (0.2 ) (0.6 ) Other 2.6 1.2 4.3 Effective tax rate 0.3 % (1.8 ) % 2.5 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	December 31, 201 6 201 5 Deferred tax assets: Accruals and reserves $ 1,714 $ 1,955 Net operating loss carryforwards 10,396 8,547 Tax credit carryforwards 1,521 1,697 Stock-based compensation 3,324 1,969 Foreign taxes 53 54 Total deferred tax assets 17,008 14,222 Fixed assets (1,988 ) (1,799 ) State taxes 7 (607 ) Purchased intangible assets — (232 ) Total deferred tax liabilities (1,981 ) (2,638 ) Valuation allowance (14,974 ) (11,762 ) Total net deferred tax liabilities $ 53 $ (178 )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Unrecognized benefit – beginning of period $ 580 $ 459 $ 358 Gross increases – current year tax positions 130 121 101 Gross decreases – prior year tax positions (76 ) — — Unrecognized benefit – end of period $ 634 $ 580 $ 459

Note 14 - Segments and Geogra34

Note 14 - Segments and Geographical Information (Tables)	12 Months Ended
	Dec. 31, 2016
Notes Tables
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	Years Ended December 31, 201 6 201 5 201 4 Domestic $ 147,907 $ 147,601 $ 149,617 International 12,504 25,653 28,162 Total revenue $ 160,411 $ 173,254 $ 177,779

Note 2 - Summary of Significa35

Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016USD ($)	Dec. 31, 2016USD ($)		Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Jul. 01, 2020USD ($)	Sep. 30, 2016USD ($)
Foreign Currency Transaction Loss, before Tax		$ 600		$ 500	$ 1,000
Allowance for Loan and Lease Losses, Write-offs		393		473	739
Asset Impairment Charges		922
Deferred Rent Credit, Noncurrent	$ 900	900		400
Advertising Expense		500		600	1,700
Restructuring Charges	$ 1,600	1,577	[1],[2],[3]
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent	7.00%
Goodwill, Impairment Loss		0
Software Development [Member]
Capitalized Computer Software, Additions		4,800		4,200	2,400
Capitalized Computer Software, Amortization		$ 2,700		$ 1,600	$ 1,100
Asset Impairment Charges	$ 900
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Asset, Useful Life		3 years
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage		12.00%
Number of Major Customers	0	0		0	0
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers	0	0		0
Foreign Exchange Forward [Member]
Derivative, Notional Amount	$ 3,600	$ 3,600
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments		700
Letter of Credit [Member]
Letters of Credit Outstanding, Amount							$ 300
Lease Agreements [Member]
Security Deposit	400	400
Lease Agreements [Member] | Scenario, Forecast [Member]
Security Deposit						$ 300
Previous Lease Agreement [Member]
Security Deposit	$ 300	$ 300
Minimum [Member]
Financial Instruments, Maturities, Short Term		90 days
Financial Instrument, Maturities, Long Term		1 year
Property, Plant and Equipment, Useful Life		3 years
Maximum [Member]
Financial Instruments, Maturities, Short Term		1 year
Financial Instrument, Maturities, Long Term		2 years
Property, Plant and Equipment, Useful Life		5 years
[1]	In accordance with the 2015 Executive Severance Plan, 25% of the chief executive officer's unvested equity holdings immediately accelerate to become vested if the chief executive officer is terminated for any reason other than cause. Stock-based compensation expense is a non-cash expense.
[2]	The Company exited a facility located in Redwood City, California on November 11, 2016. Facility exit expenses include rental payments the Company is required to make on the vacant office space and broker fees the Company will pay to find a new tenant to sublease the vacated office space.
[3]	Workforce reduction expenses include employee severance and temporary health insurance costs under the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA").

Note 2 - Summary of Significa36

Note 2 - Summary of Significant Accounting Policies - Changes in Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance – beginning of period	$ 1,961	$ 1,471	$ 1,056
Allowance for doubtful accounts receivable	777	963	1,154
Doubtful accounts receivable write-offs	(393)	(473)	(739)
Balance – end of period	$ 2,345	$ 1,961	$ 1,471

Note 2 - Summary of Significa37

Note 2 - Summary of Significant Accounting Policies - Deferred Tax Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance at beginning of year	$ 11,762	$ 9,157	$ 7,524
Charged to other accounts	3,212	2,605	1,633
Balance end of year	$ 14,974	$ 11,762	$ 9,157

Note 3 - Cash, Cash Equivalen38

Note 3 - Cash, Cash Equivalents, Marketable Securities and Derivative Instruments (Details Textual) xbrli-pure in Thousands	12 Months Ended
	Dec. 31, 2016
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year	0
Minimum [Member]
Marketable Securities Maturities	90 days
Maximum [Member]
Marketable Securities Maturities	2 years

Note 3 - Cash, Cash Equivalen39

Note 3 - Cash, Cash Equivalents, and Marketable Securities and Derivative Instruments - Summary of Marketable Securities (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Foreign currency forward contracts, gross unrealized losses	[1]	$ (16)	$ (29)
Foreign Exchange Forward [Member]
Foreign currency forward contracts, gross unrealized gains	[1]	11	19
Foreign currency forward contracts, net	[1]	(5)	(10)
Cash and Cash Equivalents [Member]
Cost		34,700	17,859
Gross unrealized gains
Gross unrealized losses
Fair value		34,700	17,859
Cash and Cash Equivalents [Member] | Cash [Member]
Cost		22,750	7,638
Gross unrealized gains
Gross unrealized losses
Fair value		22,750	7,638
Cash and Cash Equivalents [Member] | Money Market Funds [Member]
Cost		10,653	10,221
Gross unrealized gains
Gross unrealized losses
Fair value		10,653	10,221
Cash and Cash Equivalents [Member] | Commercial Paper [Member]
Cost		1,297
Gross unrealized gains
Gross unrealized losses
Fair value		1,297
Corporate Bond Securities [Member]
Cost		16,780	31,372
Gross unrealized gains
Gross unrealized losses		(17)	(78)
Fair value		16,763	31,294
US Government Agencies Debt Securities [Member]
Cost		9,050	6,544
Gross unrealized gains		1
Gross unrealized losses		(8)	(8)
Fair value		9,043	6,536
Commercial Paper not Included in Cash and Cash Equivalents [Member]
Cost		5,186	4,494
Gross unrealized gains
Gross unrealized losses
Fair value		5,186	4,494
Marketable Securities [Member]
Cost		31,016	42,410
Gross unrealized gains		1
Gross unrealized losses		(25)	(86)
Fair value		30,992	42,324
Cash and Cash Equivalents and Marketable Securities [Member]
Cost		65,716	60,269
Gross unrealized gains		1
Gross unrealized losses		(25)	(86)
Fair value		$ 65,692	$ 60,183
[1]	Included in "Accrued liabilities" in the accompanying consolidated balance sheet as of December 31.

Note 4 - Fair Value of Financ40

Note 4 - Fair Value of Financial Instruments (Details Textual)	12 Months Ended
	Dec. 31, 2016
Minimum [Member]
Financial Instruments, Maturities, Short Term	90 days
Financial Instrument, Maturities, Long Term	1 year
Minimum [Member] | Marketable Securities [Member]
Financial Instruments, Maturities, Short Term	90 days
Financial Instrument, Maturities, Long Term	1 year
Maximum [Member]
Financial Instruments, Maturities, Short Term	1 year
Financial Instrument, Maturities, Long Term	2 years
Maximum [Member] | Marketable Securities [Member]
Financial Instruments, Maturities, Short Term	1 year
Financial Instrument, Maturities, Long Term	2 years

Note 4 - Fair Value of Financ41

Note 4 - Fair Value of Financial Instruments - Money Market Funds and Marketable Securities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Foreign Exchange Forward [Member]
Foreign currency forward contracts, net	[1]	$ (5)	$ (10)
Fair Value, Measurements, Recurring [Member]
Cash and cash equivalents, fair value		11,950
Asset fair value		30,992	42,324
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member]
Foreign currency forward contracts, net		(5)	(10)
Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Asset fair value		16,763	31,294
Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Asset fair value		9,043	6,536
Fair Value, Measurements, Recurring [Member] | Commercial Paper not Included in Cash and Cash Equivalents [Member]
Asset fair value		5,186	4,494
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Cash and cash equivalents, fair value		10,653	10,221
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member]
Cash and cash equivalents, fair value		1,297
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Cash and cash equivalents, fair value		10,653
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Cash and cash equivalents, fair value		10,653	10,221
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Cash and cash equivalents, fair value		1,297
Asset fair value		30,992	42,324
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member]
Foreign currency forward contracts, net		(5)	(10)
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Debt Securities [Member]
Asset fair value		16,763	31,294
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | US Government Agencies Debt Securities [Member]
Asset fair value		9,043	6,536
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Commercial Paper not Included in Cash and Cash Equivalents [Member]
Asset fair value		5,186	4,494
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Cash and cash equivalents, fair value
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member]
Cash and cash equivalents, fair value		$ 1,297
[1]	Included in "Accrued liabilities" in the accompanying consolidated balance sheet as of December 31.

Note 5 - Property, Equipment,42

Note 5 - Property, Equipment, and Software (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Asset Impairment Charges		$ 922
Depreciation		$ 6,900	$ 6,000	$ 4,600
Software Development [Member]
Asset Impairment Charges	$ 900

Note 5 - Property, Equipment,43

Note 5 - Property, Equipment, and Software - Summary of Property, Equipment and Software (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Property, equipment and software, gross		$ 34,970	$ 29,476
Less: accumulated depreciation and amortization		(23,244)	(17,366)
Property, equipment and software, net		11,726	12,110
Office Furniture and Fixtures [Member]
Property, equipment and software, gross		750	793
Equipment and Computers [Member]
Property, equipment and software, gross		14,042	12,597
Leasehold Improvements [Member]
Property, equipment and software, gross		2,074	1,965
Computer Software [Member]
Property, equipment and software, gross		2,167	2,011
Internal Use Software Development Costs [Member]
Property, equipment and software, gross	[1]	$ 15,937	$ 12,110
[1]	Internally developed software costs exclude $0.9 million of asset impairment charges as of December 31, 2016 related to the impairment of YFP 5.0, the Company's supply-side platform for publishers.

Note 5 - Property, Equipment,44

Note 5 - Property, Equipment, and Software - Assets Recorded Under Capital Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Gross assets under capital leases	$ 657	$ 633
Less: accumulated depreciation	(636)	(633)
Net assets under capital leases	$ 21

Note 6 - Goodwill and Intangi45

Note 6 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Amortization of Intangible Assets	$ 0.7	$ 0.7	$ 0.7

Note 6 - Goodwill and Intangi46

Note 6 - Goodwill and Intangible Assets - Intangible Assets Detail (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2016
Gross carrying amount	$ 3,054	$ 3,054
Accumulated amortization	(2,395)	(3,054)
Net carrying amount	659
Developed Technology Rights [Member]
Gross carrying amount	2,950	2,950
Accumulated amortization	(2,300)	(2,950)
Net carrying amount	$ 650
Weighted-average remaining life (Year)	1 year
Customer Relationships [Member]
Gross carrying amount	$ 104	104
Accumulated amortization	(95)	(104)
Net carrying amount	$ 9
Weighted-average remaining life (Year)	146 days

Note 7 - Accrued Liabilities -

Note 7 - Accrued Liabilities - Summary of Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accrued compensation	$ 4,871	$ 5,210
Accrued vacation and other employee benefits	1,392	3,849
Accrued customer incentives	3,425	4,945
Accrued taxes		458
Other accrued expenses	2,504	2,305
Total accrued liabilities	$ 12,192	$ 16,767

Note 8 - Borrowings (Details Te

Note 8 - Borrowings (Details Textual) - Silicon Valley Bank [Member] $ in Millions	1 Months Ended
	Nov. 30, 2014USD ($)
Line of Credit Facility, Maximum Borrowing Capacity	$ 25
Line Of Credit Facility Adjusted Quick Ratio	1.6
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	1.00%

Note 9 - Commitments and Cont49

Note 9 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leases, Rent Expense, Net	$ 3.5	$ 3	$ 2.7

Note 9 - Commitments and Cont50

Note 9 - Commitments and Contingencies - Future Minimum Payments (Details) $ in Thousands	Dec. 31, 2016USD ($)
Operating lease obligations	$ 17,282
Capital lease obligations	21
Traffic acquisition costs and other purchase commitments	509
Total minimum payments	17,812
Payments Due in Less Than One Year [Member]
Operating lease obligations	3,327
Capital lease obligations	8
Traffic acquisition costs and other purchase commitments	509
Total minimum payments	3,844
Payments Due Between One and Three Years [Member]
Operating lease obligations	6,864
Capital lease obligations	13
Traffic acquisition costs and other purchase commitments
Total minimum payments	6,877
Payments Due Between Three and Five Years [Member]
Operating lease obligations	3,230
Capital lease obligations
Traffic acquisition costs and other purchase commitments
Total minimum payments	3,230
Payments Due in More Than Five Years [Member]
Operating lease obligations	3,861
Capital lease obligations
Traffic acquisition costs and other purchase commitments
Total minimum payments	$ 3,861

Note 10 - Stockholders' Equit51

Note 10 - Stockholders' Equity (Details Textual) - USD ($)		Jan. 02, 2015	Aug. 06, 2013	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014	Sep. 30, 2016	Feb. 18, 2016	Aug. 07, 2013
Preferred Stock, Shares Authorized				20,000,000	20,000,000	20,000,000		20,000,000				20,000,000
Preferred Stock, Par or Stated Value Per Share				$ 0.001	$ 0.001	$ 0.001		$ 0.001		$ 0.001
Common Stock, Shares, Issued				33,946,820	33,946,820	33,946,820		34,455,220
Stock Repurchase Program, Authorized Amount											$ 10,000,000
Treasury Stock, Shares, Acquired				27,202
Payments for Repurchase of Common Stock				$ 98,000		$ 7,007,000
Stock Repurchased During Period, Shares						1,952,909
Treasury Stock, Shares				2,019,575	2,019,575	2,019,575		66,666
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	[1]					305,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	[2]					899,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value						$ 1.93		$ 2.78	$ 3.76
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value								$ 500,000	$ 2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price				$ 5.08	$ 5.08	$ 5.08		$ 5.04
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized				$ 6,800,000	$ 6,800,000	$ 6,800,000
Restructuring Charges					$ 1,600,000	$ 1,577,000	[3],[4],[5]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition						1 year 262 days
Preferred Stock, Shares Outstanding				0	0	0		0
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense						$ 0		$ 0	0
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options						0		0	0
Share-based Compensation Expense Acceleration [Member]
Restructuring Charges	[3],[4],[5]					288,000
Cost of Revenue [Member]
Capitalized Computer Software, Period Increase (Decrease)						537,000		544,000	360,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value						$ 6,300,000		$ 4,300,000	$ 100,000
Modification of Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		700,000				700,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period						700,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price		$ 7
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized		$ 400,000
Post Modification of Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price		$ 5.14
The 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						3 years
The 2004 Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date						85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						5 years
The 2004 Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						10 years
The 2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period						3 years
Share-based Compensation Arrangement by Share-based Payment Award, Minimum Grant Price as a Percentage of Fair Market Value at Grant Date						100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized				2,000,000	2,000,000	2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum						5.00%
The 2013 Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						5 years
The 2013 Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						10 years
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date			85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			500,000
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum			1.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate			15.00%
Crowd Science, Inc. [Member]
Treasury Stock, Shares				66,666	66,666	66,666
[1]	Options granted include 0.7 million re-issued options in connection with a modification. See "Modification of Employee Stock Options" below for more information.
[2]	Options cancelled and forfeited include 0.7 million options that were cancelled in connection with a modification. See "Modification of Employee Stock Options" below for more information.
[3]	In accordance with the 2015 Executive Severance Plan, 25% of the chief executive officer's unvested equity holdings immediately accelerate to become vested if the chief executive officer is terminated for any reason other than cause. Stock-based compensation expense is a non-cash expense.
[4]	The Company exited a facility located in Redwood City, California on November 11, 2016. Facility exit expenses include rental payments the Company is required to make on the vacant office space and broker fees the Company will pay to find a new tenant to sublease the vacated office space.
[5]	Workforce reduction expenses include employee severance and temporary health insurance costs under the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA").

Note 10 - Stockholders' Equit52

Note 10 - Stockholders' Equity - Common Stock Activity (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Outstanding at December 31, 2015 (in shares)	34,455,220
Option exercises (in shares)	12,000
Repurchases of common stock (in shares)	(1,952,909)
Outstanding at December 31, 2016 (in shares)	33,946,820	34,455,220
Common Stock [Member]
Outstanding at December 31, 2015 (in shares)	34,455,220
Option exercises (in shares)	12,434	268,172	801,691
RSUs released, net of shares withheld for taxes (in shares)	985,573
Common stock issued in connection with employee stock purchase plan (in shares)	446,502	396,743	315,324
Repurchases of common stock (in shares)	(1,952,909)
Outstanding at December 31, 2016 (in shares)	33,946,820	34,455,220

Note 10 - Stockholders' Equit53

Note 10 - Stockholders' Equity - Stock Repurchase Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
		Dec. 31, 2016	Dec. 31, 2016
Cumulative balance (in shares)			66,666
Cumulative balance , amount of repurchase
Repurchases of common stock (2) (in shares)		27,202
Repurchases of common stock (2)			$ 7,105
Cumulative balance (in shares)		2,019,575	2,019,575
Cumulative balance , amount of repurchase		$ 7,105	$ 7,105
Common Stock [Member]
Cumulative balance (in shares)
Cumulative balance, average price paid per share (in dollars per share)	[1]
Cumulative balance , amount of repurchase
Repurchases of common stock (2) (in shares)	[2]		1,952,909
Repurchases of common stock (2) (in dollars per share)	[1],[2]		$ 3.64
Repurchases of common stock (2)	[2]		$ 7,105
Cumulative balance (in shares)		1,952,909	1,952,909
Cumulative balance, average price paid per share (in dollars per share)	[1]	$ 3.64	$ 3.64
Cumulative balance , amount of repurchase		$ 7,105	$ 7,105
[1]	Average price paid per share includes commission.
[2]	Includes 27,202 treasury shares purchased in late December 2016 for $98,000 that had not yet settled as of December 31, 2016.

Note 10 - Stockholders' Equit54

Note 10 - Stockholders' Equity - Option Award Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Balance (in shares)		4,360
Balance, weighted-average exercise price (in dollars per share)		$ 5.04
Balance, weighted-average remaining contractual life (Year)			6 years 109 days
Balance, aggregate intrinsic value	[1]	$ 1,671	$ 1,480
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	[2]	305
Granted, weighted-average exercise price (in dollars per share)	[2]	$ 3.61
Exercised (in shares)		(12)
Exercised, weighted-average exercise price (in dollars per share)		$ 1.66
Canceled and forfeited (in shares)	[3]	(899)
Canceled and forfeited, weighted-average exercise price (in dollars per share)	[3]	$ 4.47
Balance (in shares)		3,754	4,360
Balance, weighted-average exercise price (in dollars per share)		$ 5.08	$ 5.04
Balance, weighted-average remaining contractual life (Year)		4 years 350 days
Vested as of December 31, 2016 and expected to vest thereafter (in shares)	[4]	3,720
Vested as of March 31, 2016 and expected to vest thereafter, weighted-average exercise price (in dollars per share)	[4]	$ 5.07
Vested as of March 31, 2016 and expected to vest thereafter, weighted-average remaining contractual life (Year)	[4]	4 years 343 days
Vested as of March 31, 2016 and expected to vest thereafter, aggregate intrinsic value	[1],[4]	$ 1,669
Vested and exercisable as of December 31, 2016 (in shares)		3,339
Vested and exercisable as of March 31, 2016, weighted-average exercise price (in dollars per share)		$ 4.90
Vested and exercisable as of March 31, 2016, weighted-average remaining contractual life (Year)		4 years 251 days
Vested and exercisable as of March 31, 2016, aggregate intrinsic value	[1]	$ 1,654
[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 granted include 0.7 million re-issued options in connection with a modification. See "Modification of Employee Stock Options" below for more information.
[3]	Options cancelled and forfeited include 0.7 million options that were cancelled in connection with a modification. See "Modification of Employee Stock Options" below for more information.
[4]	Options expected to vest reflect an estimated forfeiture rate.

Note 10 - Stockholders' Equit55

Note 10 - Stockholders' Equity - Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Balance, RSU (in shares)		1,619
Balance, RSU weighted-average fair value at grant (in dollars per share)		$ 5.39
Balance, RSU weighted average remaining contractual life (Year)		1 year 18 days	361 days
Balance, RSU aggregate intrinsic value	[1]	$ 6,663	$ 5,681
Granted, RSU (in shares)		1,914
Granted, RSU weighted-average fair value at grant (in dollars per share)		$ 3.84
Released, RSU (in shares)		(1,218)
Released, RSU weighted-average fair value at grant (in dollars per share)		$ 5.19
Canceled and forfeited, RSU (in shares)		(636)
Canceled and forfeited, RSU weighted-average fair value at grant (in dollars per share)		$ 4.26
Balance, RSU (in shares)		1,678	1,619
Balance, RSU weighted-average fair value at grant (in dollars per share)		$ 4.19	$ 5.39
[1]	The intrinsic value of RSUs is based on the Company's closing stock price as reported by the New York Stock Exchange on that date.

Note 10 - Stockholders' Equit56

Note 10 - Stockholders' Equity - Assumptions Used to Value Employee Stock Purchase Rights (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Expected term (years) (Year)	182 days	182 days	182 days
Volatility	56.00%	56.00%	80.00%
Dividend yield
Minimum [Member]
Risk-free interest rate	0.21%	0.07%	0.05%
Maximum [Member]
Risk-free interest rate	0.45%	0.36%	0.08%

Note 10 - Stockholders' Equit57

Note 10 - Stockholders' Equity - Shares of Common Stock Reserved for Future Issuance (Details) - shares	Dec. 31, 2016	Dec. 31, 2015
Common stock reserved (in shares)	10,720,808	10,097,354
Common Stock Options [Member]
Common stock reserved (in shares)	3,754,122	4,360,015
Restricted Stock Units [Member]
Common stock reserved (in shares)	1,678,448	1,618,543
Shares Available for Future Issuance [Member]
Common stock reserved (in shares)	4,952,254	3,680,862
Employee Stock Purchase Plan [Member]
Common stock reserved (in shares)	335,984	437,934

Note 10 - Stockholders' Equit58

Note 10 - Stockholders' Equity - Fair Value of Option Grants (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Expected term (years) (Year)	182 days	182 days	182 days
Volatility	56.00%	56.00%	80.00%
Dividend yield
Weighted-average fair value (in dollars per share)	$ 1.93	$ 2.78	$ 3.76
Minimum [Member]
Risk-free interest rate	0.21%	0.07%	0.05%
Maximum [Member]
Risk-free interest rate	0.45%	0.36%	0.08%
Employee Stock Option [Member]
Expected term (years) (Year)	6 years	6 years	6 years
Volatility	56.00%		80.00%
Risk-free interest rate	1.90%
Dividend yield
Weighted-average fair value (in dollars per share)	$ 1.93	$ 2.78	$ 3.76
Employee Stock Option [Member] | Minimum [Member]
Volatility		56.00%
Risk-free interest rate		1.54%	1.74%
Employee Stock Option [Member] | Maximum [Member]
Volatility		80.00%
Risk-free interest rate		1.79%	2.02%

Note 10 - Stockholders' Equit59

Note 10 - Stockholders' Equity - Summary of Stock-based Compensation Related to Stock-based Awards (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allocated stock-based compensation	[1]	$ 8,424	$ 8,879	$ 5,774
Cost of Revenue [Member]
Allocated stock-based compensation		178	312	342
Selling and Marketing Expense [Member]
Allocated stock-based compensation		2,612	3,403	2,776
Research and Development Expense [Member]
Allocated stock-based compensation	[2]	1,200	1,111	482
General and Administrative Expense [Member]
Allocated stock-based compensation	[1]	$ 4,434	$ 4,053	$ 2,174
[1]	Excludes $288,000 of stock-based compensation expense for the year ended December 31, 2016 related to the acceleration of the Company's former chief executive officer's unvested equity awards in association with his severance agreement. The $288,000 is included in restructuring on the Company's consolidated statements of operations. See Note 11 below.
[2]	Excludes $537,000, $544,000 and $360,000 of stock-based compensation expense that was capitalized as part of internal-use software development costs for the years ended December 31, 2016, 2015 and 2014, respectively.

Note 11 - Restructuring (Detail

Note 11 - Restructuring (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Restructuring Charges	$ 1,600	$ 1,577	[1],[2],[3]
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent	7.00%
Chief Executive Officer [Member]
Restructuring and Related Cost, Percentage of Unvested Employee Share-based Payments to Vest Upon Termination	25.00%
Accrued Liabilities [Member]
Restructuring Reserve, Current	$ 800	$ 800
[1]	In accordance with the 2015 Executive Severance Plan, 25% of the chief executive officer's unvested equity holdings immediately accelerate to become vested if the chief executive officer is terminated for any reason other than cause. Stock-based compensation expense is a non-cash expense.
[2]	The Company exited a facility located in Redwood City, California on November 11, 2016. Facility exit expenses include rental payments the Company is required to make on the vacant office space and broker fees the Company will pay to find a new tenant to sublease the vacated office space.
[3]	Workforce reduction expenses include employee severance and temporary health insurance costs under the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA").

Note 11 - Restructuring - Restr

Note 11 - Restructuring - Restructuring Expenses (Details) - USD ($)		3 Months Ended	12 Months Ended
		Dec. 31, 2016	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Restructuring		$ 1,600,000	$ 1,577,000	[1],[2],[3]
Employee Severance [Member]
Restructuring	[1],[2],[3]		1,172,000
Share-based Compensation Expense Acceleration [Member]
Restructuring	[1],[2],[3]		288,000
Facility Closing [Member]
Restructuring	[1],[2],[3]		$ 117,000
[1]	In accordance with the 2015 Executive Severance Plan, 25% of the chief executive officer's unvested equity holdings immediately accelerate to become vested if the chief executive officer is terminated for any reason other than cause. Stock-based compensation expense is a non-cash expense.
[2]	The Company exited a facility located in Redwood City, California on November 11, 2016. Facility exit expenses include rental payments the Company is required to make on the vacant office space and broker fees the Company will pay to find a new tenant to sublease the vacated office space.
[3]	Workforce reduction expenses include employee severance and temporary health insurance costs under the Consolidated Omnibus Budget Reconciliation Act of 1985 ("COBRA").

Note 12 - Net Loss Per Share -

Note 12 - Net Loss Per Share - Calculation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net loss	$ (7,721)	$ (16,745)	$ (8,745)
Weighted-average shares used in computing net loss per share:
Basic (in shares)	34,441	33,829	32,591
Weighted-average effect of potentially dilutive shares:
Diluted (in shares)	34,441	33,829	32,591
Net loss per share:
Basic (in dollars per share)	$ (0.22)	$ (0.49)	$ (0.27)
Diluted (in dollars per share)	$ (0.22)	$ (0.49)	$ (0.27)

Note 12 - Net Loss Per Share 63

Note 12 - Net Loss Per Share - Equity Shares Excluded From the Calculation of Diluted Net Income Per Share (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Stock Option [Member]
Antidilutive shares (in shares)	4,133	4,723	5,263
Restricted Stock Units (RSUs) [Member]
Antidilutive shares (in shares)	552	499	657
Warrant [Member]
Antidilutive shares (in shares)		6	25
Employee Stock Purchase Plan [Member]
Antidilutive shares (in shares)	48	110	24

Note 13 - Income Taxes (Details

Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 3,212	$ 2,605	$ 1,633
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	27,200
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	20,700
Deferred Tax Assets, Tax Credit Carryforwards, Other	300
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Domestic Subsidiaries	2,300
Domestic Tax Authority [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Research	1,000
State and Local Jurisdiction [Member]
Deferred Tax Assets, Tax Credit Carryforwards, Research	$ 1,100

Note 13 - Income Taxes - Domest

Note 13 - Income Taxes - Domestic and Foreign Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Domestic	$ (8,507)	$ (17,604)	$ (9,899)
Foreign	766	1,159	930
Loss before income taxes	$ (7,741)	$ (16,445)	$ (8,969)

Note 13 - Income Taxes - Compon

Note 13 - Income Taxes - Components of Income Tax (Expense) Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Federal			$ 21
State	42	(29)	270
Foreign	(253)	(524)	(403)
Total	(211)	(553)	(112)
Federal	221	221	221
State	11	12	105
Foreign	(1)	20	10
Total	178	253	336
Total income tax (expense) benefit	$ 20	$ (300)	$ 224

Note 13 - Income Taxes - Effect

Note 13 - Income Taxes - Effective Tax Rates and the Federal Statutory Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Tax at federal statutory rate	34.00%	34.00%	34.00%
State, net of federal effect	0.50%	(0.10%)	4.20%
Foreign taxes	(4.20%)	(2.80%)	(4.40%)
Foreign rate differential	3.40%	2.40%	3.50%
Stock-based compensation	(3.80%)	(4.60%)	(9.70%)
Change in valuation allowance	(31.90%)	(31.70%)	(28.80%)
Other non-deductible expenses	(0.30%)	(0.20%)	(0.60%)
Other	2.60%	1.20%	4.30%
Effective tax rate	0.30%	(1.80%)	2.50%

Note 13 - Income Taxes - Signif

Note 13 - Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accruals and reserves	$ 1,714	$ 1,955
Net operating loss carryforwards	10,396	8,547
Tax credit carryforwards	1,521	1,697
Stock-based compensation	3,324	1,969
Foreign taxes	53	54
Total deferred tax assets	17,008	14,222
Fixed assets	(1,988)	(1,799)
State taxes	7	(607)
Purchased intangible assets		(232)
Total deferred tax liabilities	(1,981)	(2,638)
Valuation allowance	(14,974)	(11,762)	$ (9,157)	$ (7,524)
Total net deferred tax assets	$ (53)
Total net deferred tax liabilities		$ (178)

Note 13 - Income Taxes - Reconc

Note 13 - Income Taxes - Reconciliation of the Beginning and Ending Balances of the Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Unrecognized benefit – beginning of period	$ 580	$ 459	$ 358
Gross increases – current year tax positions	130	121	101
Gross decreases – prior year tax positions	(76)
Unrecognized benefit – end of period	$ 634	$ 580	$ 459

Note 14 - Segments and Geogra70

Note 14 - Segments and Geographical Information (Details Textual)	12 Months Ended
	Dec. 31, 2016
Number of Operating Segments	1
Number of Reportable Segments	1

Note 14 - Segment and Geographi

Note 14 - Segment and Geographical Information - Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue	$ 160,411	$ 173,254	$ 177,779
Domestic [Member]
Revenue	147,907	147,601	149,617
Foreign [Member]
Revenue	$ 12,504	$ 25,653	$ 28,162