Telaria (TLRA) 10-K 28 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Mar. 21, 2014	Jun. 30, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'TREMOR VIDEO INC.	'	'
Entity Central Index Key	'0001375796	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Non-accelerated Filer	'	'
Entity Public Float	'	'	$321
Entity Common Stock, Shares Outstanding	'	50,341,663	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$92,691	$32,533
Restricted cash, short-term	'	21
Accounts receivable, net of allowance for doubtful accounts of $959 and $1,050 as of December 31, 2013 and December 31, 2012, respectively	41,458	36,011
Prepaid expenses and other current assets	1,912	953
Total current assets	136,061	69,518
Long-term assets:	'	'
Restricted cash, long-term	600	1,200
Property and equipment, net of accumulated depreciation of $3,618 and $3,077 as of December 31, 2013 and December 31, 2012, respectively	3,388	1,995
Intangible assets, net of accumulated amortization of $15,313 and $10,315 as of December 31, 2013 and December 31, 2012, respectively	20,387	25,385
Goodwill	29,719	29,719
Deferred tax assets, long-term	189	1,695
Other long-term assets	216	211
Total long-term assets	54,499	60,205
Total assets	190,560	129,723
Current liabilities:	'	'
Accounts payable and accrued expenses	32,312	21,075
Deferred rent and security deposits payable, short-term	14	107
Deferred revenue	271	210
Deferred tax liabilities, short-term	189	1,695
Amount outstanding under credit facility and accrued interest expenses	'	6,019
Total current liabilities	32,786	29,106
Deferred rent and security deposits payable, long-term	742	520
Warrants for purchase of mandatorily redeemable convertible preferred stock	'	1,103
Total liabilities	33,528	30,729
Commitments and contingencies	'	'
Mandatorily redeemable convertible preferred stock	'	162,466
Stockholders' equity (deficit):	'	'
Common stock, $0.0001 par value: 250,000,000 and 52,333,333 (includes 2,333,333 shares of Series II common stock) shares authorized as of December 31, 2013 and December 31, 2012, respectively; 49,998,274 and 7,722,262 (includes 1,047,357 shares of Series II common stock) shares issued and outstanding as of December 31, 2013 and December 31, 2012, respectively	5	1
Additional paid-in capital	267,767	17,752
Accumulated other comprehensive income	195	345
Accumulated deficit	-110,935	-81,570
Total stockholders' equity (deficit)	157,032	-63,472
Total liabilities, mandatorily redeemable securities and stockholders' equity (deficit)	$190,560	$129,723

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Accounts receivable, allowance for doubtful accounts	$959	$1,050
Property and equipment, accumulated depreciation	3,618	3,077
Intangible assets, accumulated amortization	$15,313	$10,315
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	250,000,000	52,333,333
Common stock, shares issued	49,998,274	7,722,262
Common stock, shares outstanding	49,998,274	7,722,262
Series II common stock	'	'
Common stock, shares authorized	2,333,333	2,333,333
Common stock, shares issued	1,047,357	1,047,357
Common stock, shares outstanding	1,047,357	1,047,357

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Operations	'	'	'
Revenue	$131,796	$105,190	$90,301
Cost of revenue	77,925	61,317	58,502
Gross profit	53,871	43,873	31,799
Operating expenses:	'	'	'
Technology and development	11,637	8,144	5,900
Sales and marketing	38,496	35,042	28,829
General and administrative	10,950	10,824	10,880
Depreciation and amortization	6,310	5,992	6,088
Total operating expenses	67,393	60,002	51,697
Loss from operations	-13,522	-16,129	-19,898
Interest and other income (expense), net:	'	'	'
Interest expense, net	-127	-227	-321
Other income (expense), net	339	-8	-583
Total interest and other income (expense), net	212	-235	-904
Loss before income taxes	-13,310	-16,364	-20,802
Income tax expense	206	280	223
Net loss	-13,516	-16,644	-21,025
Series F preferred stock deemed dividend	-15,849	'	'
Net loss attributable to common stockholders	($29,365)	($16,644)	($21,025)
Net loss per share attributable to common stockholders:	'	'	'
Basic and diluted (in dollars per share)	($1.02)	($2.22)	($3.02)
Weighted average number of shares of common stock outstanding:	'	'	'
Basic and diluted (in shares)	28,761,700	7,499,986	6,952,952

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Comprehensive Loss	'	'	'
Net loss	($13,516)	($16,644)	($21,025)
Series F preferred stock deemed dividend	-15,849	'	'
Net loss attributable to common stockholders	-29,365	-16,644	-21,025
Other comprehensive gain (loss):	'	'	'
Change in unrealized gain (loss) on short-term investments available for sale "	'	7	-12
Foreign currency translation adjustments	-150	-58	177
Comprehensive loss attributable to common stockholders	($29,515)	($16,695)	($20,860)

Consolidated_Statements_of_Man

Consolidated Statements of Mandatorily Redeemable Convertible Preferred Stock and Changes in Stockholders' Equity (Deficit) (USD $)

Total

Preferred Stock

Common Stock

Common Stock

Additional Paid-In Capital

Additional Paid-In Capital

Accumulated Other Comprehensive Income

Accumulated Deficit

Accumulated Deficit

In Thousands, except Share data, unless otherwise specified

USD ($)

USD ($)

USD ($)

Series F

USD ($)

Series F

USD ($)

USD ($)

Series F

USD ($)

USD ($)

Balance at Dec. 31, 2010

($35,571)

$126,199

[1],[2]

$1

[1],[3],[4]

'

$8,029

'

$231

($43,832)

'

Balance (in shares) at Dec. 31, 2010

[1]

'

28,598,066

[2]

6,075,557

[3],[4]

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

Issuance of preferred stock, net of $1,321 issuance costs

[1],[2]

'

35,679

'

'

'

'

'

'

'

Issuance of preferred stock (in shares)

[1],[2]

'

3,965,126

'

'

'

'

'

'

'

Accretion of issuance costs

-204

204

[1],[2]

'

'

-204

'

'

'

'

Exercise of stock options

344

'

'

'

344

'

'

'

'

Exercise of stock options (in shares)

[1],[3],[4]

'

'

451,452

'

'

'

'

'

'

Stock-based compensation expense

2,883

'

'

'

2,883

'

'

'

'

Repurchase and retirement of common stock

-83

'

'

'

-14

'

'

-69

'

Repurchase and retirement of common stock (in shares)

[1],[3],[4]

'

'

-18,847

'

'

'

'

'

'

Common stock issued in the acquisition of ScanScout, Inc. (in shares)

[1],[3],[4]

'

'

650

'

'

'

'

'

'

Common stock issued in the acquisition of Transpera, Inc.

2,883

'

'

'

2,883

'

'

'

'

Common stock issued in the acquisition of Transpera, Inc. (in shares)

[1],[3],[4]

'

'

674,429

'

'

'

'

'

'

Net loss

-21,025

'

'

'

'

'

'

-21,025

'

Change in unrealized loss on short-term investments

-12

'

'

'

'

'

-12

'

'

Foreign currency translation adjustments

177

'

'

'

'

'

177

'

'

Balance at Dec. 31, 2011

-50,608

162,082

[1],[2]

1

[1],[3],[4]

'

13,921

'

396

-64,926

'

Balance (in shares) at Dec. 31, 2011

[1]

'

32,563,192

[2]

7,183,241

[3],[4]

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

Accretion of issuance costs

-384

384

[1],[2]

'

'

-384

'

'

'

'

Exercise of stock options

433

'

'

'

433

'

'

'

'

Exercise of stock options (in shares)

[1],[3],[4]

'

'

369,890

'

'

'

'

'

'

Stock-based compensation expense

2,919

'

'

'

2,919

'

'

'

'

Common stock issued in the acquisition of Transpera, Inc.

863

'

'

'

863

'

'

'

'

Common stock issued in the acquisition of Transpera, Inc. (in shares)

[1],[3],[4]

'

'

169,131

'

'

'

'

'

'

Net loss

-16,644

'

'

'

'

'

'

-16,644

'

Change in unrealized loss on short-term investments

7

'

'

'

'

'

7

'

'

Foreign currency translation adjustments

-58

'

'

'

'

'

-58

'

'

Balance at Dec. 31, 2012

-63,472

162,466

[1],[2]

1

[1],[3],[4]

'

17,752

'

345

-81,570

'

Balance (in shares) at Dec. 31, 2012

[1]

'

32,563,192

[2]

7,722,262

[3],[4]

'

'

'

'

'

'

Increase (Decrease) in Stockholders' Equity

'

'

'

'

'

'

'

'

'

Accretion of issuance costs

-191

191

[1],[2]

'

'

-191

'

'

'

'

Common stock issuance, net of $8,402 issuance costs

66,598

'

1

[1],[3],[4]

'

66,597

'

'

'

'

Common stock issuance (in shares)

[1],[3],[4]

'

'

7,500,000

'

'

'

'

'

'

Conversion of preferred stock

162,657

-162,657

[1],[2]

3

[1],[3],[4]

'

162,654

'

'

'

'

Conversion of preferred stock (in shares)

[1]

'

-32,563,192

[2]

32,587,453

[3],[4]

'

'

'

'

'

'

Series F preferred stock deemed dividend

[5]

'

'

'

'

'

15,849

'

'

15,849

Series F preferred stock deemed dividend (in shares)

[1],[3],[4],[5]

'

'

'

1,584,863

'

'

'

'

'

Reclassification of liability warrants to equity warrants

790

'

'

'

790

'

'

'

'

Exercise of warrants (in shares)

[1],[3],[4]

'

'

64,067

'

'

'

'

'

'

Exercise of stock options

912

'

'

'

912

'

'

'

'

Exercise of stock options (in shares)

539,629

'

539,629

[1],[3],[4]

'

'

'

'

'

'

Stock-based compensation expense

3,404

'

'

'

3,404

'

'

'

'

Net loss

-13,516

'

'

'

'

'

'

-13,516

'

Foreign currency translation adjustments

-150

'

'

'

'

'

-150

'

'

Balance at Dec. 31, 2013

$157,032

'

$5

[1],[3],[4]

'

$267,767

'

$195

($110,935)

'

Balance (in shares) at Dec. 31, 2013

[1],[3],[4]

'

'

49,998,274

'

'

'

'

'

'

[1]

All share amounts have been restated to reflect a 1-for-1.5 reverse stock split, refer to note 13.

[2]

Preferred stock included several series of preferred stock, refer to note 13.

[3]

Common stock included two series of common stock, refer to note 13.

[4]

All share amounts have been restated to reflect the renaming of the Company?s ?Series I common stock? to ?common stock?, refer to note 13.

[5]

Represents a one-time non-cash deemed dividend related to the Series F preferred stock ratchet provision, refer to note 13.

Consolidated_Statements_of_Man1

Consolidated Statements of Mandatorily Redeemable Convertible Preferred Stock and Changes in Stockholders' Equity (Deficit) (Parenthetical) (USD $)	0 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 13, 2013	Dec. 31, 2013	Dec. 31, 2011
Consolidated Statements of Mandatorily Redeemable Convertible Preferred Stock and Changes in Stockholders' Equity (Deficit)	'	'	'
Reverse stock split ratio	0.67	0.67	'
Common stock issuance, issuance cost	'	$8,402	'
Issuance of preferred stock, issuance costs	'	'	$1,321

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net loss	($13,516)	($16,644)	($21,025)
Adjustments required to reconcile net loss to net cash provided by (used in) operating activities:	'	'	'
Depreciation of property and equipment	1,312	1,104	956
Amortization of intangible assets	4,998	4,888	5,132
Amortization of deferred financing costs	'	'	2
Amortization of original issuance discount	'	'	9
Bad debt (income) expense	-19	70	-29
Mark-to-market (income) expense	-313	22	373
Stock-based compensation expense	3,404	2,919	2,883
Stock-based long-term incentive compensation expense	1,614	'	'
Change in unrealized gain (loss) on short-term investments available for sale	'	7	-12
Net changes in operating assets and liabilities:	'	'	'
Increase in accounts receivable	-5,428	-2,242	-4,430
Increase in prepaid expenses, other current assets and other long-term assets	-964	-355	-17
Increase (decrease) in accounts payable and accrued expenses	9,604	4,787	-3,135
Increase in deferred rent and security deposits payable	129	166	461
Increase in deferred revenue	61	175	35
Net cash provided by (used in) operating activities	882	-5,103	-18,797
Cash flows from investing activities:	'	'	'
Purchase of property and equipment	-2,705	-1,156	-733
Maturities of short-term investments	'	8,652	11,791
Purchases of short-term investments	'	'	-12,267
Change in restricted cash	621	36	'
Acquisition of Transpera, Inc., net of cash acquired	'	15	12
Acquisition of InPlay	'	-1,950	'
Purchase of Domain Name	'	-50	'
Net cash (used in) provided by investing activities	-2,084	5,547	-1,197
Cash flows from financing activities:	'	'	'
Proceeds from preferred stock issuance, net of $1,321 issuance costs	'	'	35,679
Repurchase and retirement of common stock	'	'	-83
Proceeds from common stock issuance, net of $8,402 issuance costs	66,598	'	'
Repayment of amount outstanding under credit facility	-6,000	'	'
Proceeds from the exercise of stock options	912	433	344
Net cash provided by financing activities	61,510	433	35,940
Net increase in cash and cash equivalents	60,308	877	15,946
Effect of exchange rate changes in cash and cash equivalents	-150	-58	177
Cash and cash equivalents at beginning of year	32,533	31,714	15,591
Cash and cash equivalents at end of year	$92,691	$32,533	$31,714

Consolidated_Statements_of_Cas1

Consolidated Statements of Cash Flows (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2011
Consolidated Statements of Cash Flows	'	'
Issuance of preferred stock, issuance costs	'	$1,321
Issuance of common stock, issuance costs	$8,402	'

Organization_and_Description_o

Organization and Description of Business	12 Months Ended
	Dec. 31, 2013
Organization and Description of Business	'
Organization and Description of Business	'
	1. Organization and Description of Business
	Tremor Video, Inc. (the “Company”) was originally organized as Tremor Media, LLC in November 2005 and converted into a corporation named ‘‘Tremor Media, Inc.’’ under the laws of the State of Delaware in September 2006. The Company changed its name to Tremor Video, Inc. in June 2011. The Company is a provider of technology-driven video advertising solutions enabling brand advertisers to engage consumers across multiple internet-connected devices, including computers, smartphones, tablets and connected TVs.  Through its Tremor Video Network, the Company offers advertisers access to premium and often exclusive streaming video inventory and advanced real-time optimization capabilities at scale across multiple internet-connected devices in brand safe environments.  In addition, through its licensed analytics solution, the Company provides advanced video analytic capabilities for advertisers to measure, verify and evaluate the performance of their video ad campaigns across multiple channels, both within and outside of its Tremor Video Network.  In addition, the Company recently expanded this licensing solution to publishers who can use the platform’s advanced analytics and measurement tools to gain insights into what is driving the performance of ad campaigns running on their sites and the relative value of their inventory.
	On December 8, 2010, the Company acquired ScanScout, Inc. (“ScanScout”), an online video advertising network and the developer of the Company’s video analysis and optimization technology, which is referred to as VideoHub.  On February 11, 2011, the Company acquired all of the outstanding stock of Transpera, Inc. (“Transpera”), a company that operated a technology platform that enables video advertising formats to be served on mobile devices, such as phones and tablets.  On January 17, 2012, the Company acquired the assets for the InPlay video management platform (“InPlay”) from Tube Mogul, Inc., which enabled publishers of online video content to manage and analyze the performance of advertisements displayed within their inventory of video content.
	The Company is headquartered in the State of New York.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Summary of Significant Accounting Policies	'
Summary of Significant Accounting Policies	'
	2.  Summary of Significant Accounting Policies
	Basis of Presentation
	The Company’s consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“US GAAP”).
	Basis of Consolidation
	The consolidated financial statements include the accounts of Tremor Video, Inc. and its wholly-owned subsidiaries. All significant inter-company transactions and balances have been eliminated in consolidation.
	The operating results of Transpera have been included in the consolidated financial statements since the acquisition date of February 11, 2011.
	During November 2012, the Company ceased operations of Tremor Video GmbH. The consolidated operating results include Tremor Video GmbH operations through the date operations ceased.
	Use of Estimates
	The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates, judgments and assumptions. The Company’s management believes that the estimates, judgments and assumptions used are reasonable based upon information available at the time they are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company’s management evaluates estimates, including those related to fair values and useful lives of intangible assets, fair values of stock-based awards, income taxes, and contingent liabilities. Such estimates are based on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.
	Initial Public Offering
	On July 2, 2013, the Company closed its initial public offering (“IPO”) of common stock in which the Company issued and sold 7,500,000 shares of common stock.  Upon closing of the IPO, all of the Company’s outstanding mandatorily redeemable convertible preferred stock (“preferred stock”) automatically converted into 34,172,316 shares of common stock (which includes a one-time $15,849 non-cash preferred stock deemed dividend related to the issuance of 1,584,863 of additional shares of common stock in connection with the Series F preferred stock ratchet provision (refer to note 13))  and all of the Company’s outstanding Series II common stock automatically converted into 1,052,464 shares of common stock.  In addition, the outstanding warrants to purchase preferred stock automatically converted into warrants to purchase 142,534 shares of common stock, and the warrants to purchase preferred stock liability of $790, which includes a $313 adjustment for the change in fair value from January 1, 2013 through July 2, 2013, was reclassified to additional paid-in capital.
	Concentrations of Credit Risk
	Financial instruments that subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable.  All of the Company’s cash and cash equivalents are held at financial institutions that management believes to be of high credit quality.  The Company’s cash and cash equivalents may exceed federally insured limits at times.  The Company has not experienced any losses on cash and cash equivalents to date.
	The Company determines collectability by performing ongoing credit evaluations and monitoring its customers’ accounts receivable balances. For new customers and their agents, which may be advertising agencies or other third parties, the Company performs a credit check with an independent credit agency and may check credit references to determine creditworthiness. The Company only recognizes revenue when collection is reasonably assured.
	For the years ended December 31, 2013, 2012 and 2011, there were no customers that accounted for more than 10% of revenue.  At December 31, 2013 and 2012, there were no customers that accounted for more than 10% of outstanding accounts receivables.
	Cash and Cash Equivalents
	The Company considers cash deposits and all highly liquid investments with a maturity of three months or less to be cash equivalents. The fair value of the Company’s cash and cash equivalents approximates their cost plus accrued interest because of the short-term nature of the instruments. The Company’s cash deposits are held at multiple high-credit-quality financial institutions. The Company’s cash deposits at these institutions often exceeded federally insured limits.
	Short-Term Investments
	The Company accounts for short-term investments in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 320, “Investments—Debt and Equity Securities.” Management determines the appropriate classification of its investments in debt securities at the time of purchase and re-evaluates such determinations at each balance sheet date.
	The Company classifies its short-term investments in marketable securities as available-for-sale at the time of purchase and re-evaluates such classifications at each balance sheet date. All short-term investments are carried at fair value. Unrealized gains and losses associated with available-for-sale securities are recorded as a component of accumulated other comprehensive income within stockholders’ equity (deficit). Realized gains and losses, if any, are recorded in the consolidated statements of operations. If the Company intends to sell or if it is more likely than not that it will be required to sell an impaired security prior to recovery of its cost basis, then the full amount of impairment will be charged to earnings.
	At December 31, 2013 and 2012, the Company did not hold any short-term investments.
	At December 31, 2011, short-term investments represented investments in U.S. Government and agency securities, high quality corporate bonds and commercial paper with maturity dates in excess of 90 days but less than one year. All the Company’s short-term investments were held at a single high-credit-quality financial institution and exceeded federally insured limits.
	Fair Value of Financial Instruments
	The Company utilizes fair value measurements when required. The carrying amounts of cash and cash equivalents, restricted cash, accounts receivable, other current assets, other long-term assets, accounts payable and accrued expenses, security deposits payable and outstanding balances on the Company’s credit facility and related accrued interest expense approximate fair value as of December 31, 2013 and 2012 due to the short-term nature of those instruments and for the outstanding balances on the credit facility, the interest rates the Company believes it could obtain for borrowings with similar terms. Refer to note 3 for a discussion of the determination of fair value for the reported amounts of its warrants to purchase preferred stock and contingent consideration on acquisition.
	Restricted Cash
	At December 31, 2013 and 2012, the Company had total restricted cash outstanding of $600 and $1,221, respectively, which were used to collateralize a standby letters of credit for office spaces in New York, New York and Boston, Massachusetts.  Pursuant to the terms of the standby letters of credit, $621 of the total restricted cash outstanding at December 31, 2012 matured during 2013 and such collateral is no longer restricted as of December 31, 2013.  The remaining total restricted cash of $600 outstanding as of December 31, 2013 matures in 2021 and solely relates to collateral for the standby letter of credit for office space in New York, New York.
	Accounts Receivable, Net
	The Company extends credit to customers and generally does not require any security or collateral.  Accounts receivable are recorded at the invoiced amount.  The Company carries its accounts receivable balances at net realizable value. Management evaluates the collectability of its accounts receivable balances on a periodic basis and determines whether to provide an allowance or if any accounts should be written down and charged to expense as a bad debt. The evaluation is based on a past history of collections, current credit conditions, the length of time the account is past due and a past history of write-downs. A receivable balance is considered past due if the Company has not received payments based on agreed-upon terms.
	Property and Equipment, Net
	Property and equipment are stated at cost, less accumulated depreciation. Depreciation expense on property and equipment is calculated using the straight-line method over the following estimated useful lives:
	Furniture and fixtures	7 years
	Computer hardware	3 years
	Office equipment	3 years
	Computer software	3 years
	Leasehold improvements are amortized over the shorter of the remaining life of the lease or the life of the asset. The cost of additions, and expenditures that extend the useful lives of existing assets, are capitalized, while repairs and maintenance costs are charged to operations as incurred.
	Impairment of Long-Lived Assets
	Property and equipment subject to amortization are reviewed for impairment in accordance with FASB ASC 360, “Accounting for the Impairment or Disposal of Long-Lived Assets,” whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the future undiscounted cash flows expected to be generated by the assets. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. The Company has not identified any such impairment of its long-lived assets at December 31, 2013 and 2012, and therefore, for the years ended December 31, 2013 and 2012, no impairment losses have been recorded.
	Goodwill and Intangible Assets, Net
	Primarily all of the Company’s goodwill and intangible assets originated with the acquisition of ScanScout, Transpera and the acquired assets of InPlay (refer to note 6). In connection with the Scanscout acquisition, the Company recorded goodwill totaling $27,998 and intangible assets totaling $31,900. In connection with the Transpera acquisition, the Company recorded goodwill totaling $971 and intangible assets totaling $2,550. In connection with the acquired assets of InPlay, the Company recorded goodwill totaling $750 and intangible assets totaling $1,200. On August 7, 2012 the Company purchased a domain name from a third party for $50, the Company determined that this intangible asset had an indefinite life. Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Goodwill is not amortized, but rather is subject to an impairment test.
	The Company assesses goodwill for impairment annually as of October 1, or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company adopted FASB Accounting Standards Update (“ASU”) 2011-08, “Testing Goodwill for Impairment,” which gives companies the option to qualitatively assess whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If it is not more likely than not that the fair value of the reporting unit is less than its carrying value, no further assessment of that reporting unit’s goodwill is necessary.
	If it is more likely than not that the fair value of the reporting unit is less than its carrying value, then the goodwill must be tested using a two-step process based on prior accounting guidance, and if the carrying value of a reporting unit’s goodwill exceeds its implied fair value, an impairment loss equal to the excess is recorded.
	The Company has not identified any such impairment of its goodwill at December 31, 2013 and 2012, and therefore, for the years ended December 31, 2013 and 2012, no impairment losses have been recorded.
	Intangible assets that are not considered to have an indefinite useful life are amortized over their estimated useful lives on a straight-line method as follows:
	Technology	5 to 7 years
	Customer relationships	5 to 10 years
	Trademarks and trade names	5 to 7 years
	Non-competition agreements	1 year
	Intangible assets are reviewed for impairment whenever events or changes in circumstances such as, but not limited to, significant declines in revenue, earnings or cash flows or material adverse changes in the business climate indicate that the carrying amount of an asset may be impaired.  During October 2013, the Company performed an impairment test relating to customer relationships acquired in connection with the acquisition of InPlay in 2012 and, based on such test, concluded that it is impaired.  The Company recorded an impairment amount of $132 to reduce the carrying value of this intangible asset, which is included as part of amortization expense.  The Company has not identified any other impairment losses on the remaining intangible assets.
	Deferred rent liability
	The Company recognizes and records rent expense related to its lease agreements, which includes scheduled rent increases, on a straight-line basis beginning on the commencement date over the life of the lease.  The Company also recognizes and records rent concessions, in the form of reduced rent payments, on a straight-line basis over the life of the lease agreement.  Differences between straight-line rent expense and actual rent payments are recorded as Deferred rent liability and presented as a current liability in the Consolidated Balance Sheets.
	Revenue Recognition and Deferred Revenue
	The Company generates revenue primarily from the delivery of in-stream video advertisements for brand advertisers and agencies through the Tremor Video Network.  The Company also generates revenue from selling licenses to advertisers, agencies and publishers.  Revenue is recognized when the related services are delivered based on the specific terms of the contract, which are commonly based on the number of impressions delivered or by the actions of the viewers.  The Company recognizes revenue when four basic criteria are met: (1) persuasive evidence exists of an arrangement with the client reflecting the terms and conditions under which the services will be provided; (2) services have been provided or delivery has occurred; (3) the fee is fixed or determinable; and (4) collection is reasonably assured.  Collectability is assessed based on a number of factors, including the creditworthiness of a client and transaction history.  Amounts billed or collected in excess of revenue recognized are included as deferred revenue.
	The Company recognizes revenue from the delivery of video ads in the period in which the video ads are delivered.  Specifically, revenue is recognized for video ad delivery through the Tremor Video Network upon (1) engagement by the consumer with a video ad for cost per engagement (“CPE”) priced ad campaigns; (2) delivery of impressions served for CPM-priced ad campaigns without demo guarantees; (3) delivery of each impression served to a target demographic for ad campaigns priced on a CPM-basis with a guaranteed demographic reach; (4) completion of a video ad by the consumer for cost per video completed (“CPVC”) priced ad campaigns; (5) positive shift in a consumer’s favorability towards a brand for cost per brand-shift (“CPS”) priced ad campaigns; (6) shift of a consumer’s intent away from a competing brand for cost per conquest (“CPQ”) priced ad campaigns; and (7) completion of a video ad by a consumer, which video ad is viewable for its duration, for cost per completed and viewable video (“CPV&C”) priced ad campaigns.
	In the normal course of business, the Company acts as an intermediary in executing transactions with third parties.  The determination of whether revenue should be reported on a gross or net basis is based on an assessment of whether the Company is acting as the principal or an agent in the Company’s transactions.  In determining whether the Company acts as the principal or an agent, the Company follows the accounting guidance for principal-agent considerations.  The determination of whether the Company is acting as a principal or an agent in a transaction involves judgment and is based on an evaluation of the terms of each arrangement.  While none of the factors individually are considered presumptive or determinative, because the Company is the primary obligor and is responsible for (1) identifying and contracting with third-party advertisers, (2) establishing the selling prices of the video ads sold, (3) performing all billing and collection activities, including retaining credit risk, and (4) bearing sole responsibility for fulfillment of the advertising even if the Company lacks a video advertising campaign to deliver to these video ad impressions, the Company acts as the principal in these arrangements and therefore reports revenue earned and costs incurred related to these transactions on a gross basis.
	The license fees for the Company’s licensed analytics solutions are based on the number of impressions being analyzed through these solutions.  The Company recognizes revenue with respect to these solutions on a cost per impression basis based on the number of impressions being analyzed in a given month.  Typically, the Company’s license terms are for one year periods.  In limited cases, the Company charges a minimum monthly fee.
	Deferred revenue arises as a result of contractual billings in excess of recognized revenue and differences between the timing of revenue recognition and receipt of cash from the Company’s clients.  As of December 31, 2013 and 2012  there were $271 and $210, respectively, of amounts either billed in excess of recognized revenue or for services for which cash payments were received in advance of the Company’s performance of the service under the arrangement and recorded as deferred revenue in the accompanying Consolidated Balance Sheets.
	Cost of Revenue
	Cost of revenue primarily represents the video advertising inventory costs under the Company’s publisher contracts, third party hosting fees and third party serving fees incurred to deliver the video ads run through the Tremor Video Network.  Cost of revenue also includes costs of licenses from third party data providers utilized in the Company’s licensed analytics solution.  Substantially all of the Company’s cost of revenue is attributable to video advertising inventory costs under its publisher contracts.  Cost of revenue is recognized on a publisher-by-publisher basis at the same time that the associated advertising revenue is recognized.  Substantially all of the Company’s exclusive publisher contracts contain minimum percentage fill rates on qualified video ad requests, which effectively means that the Company must purchase this inventory even if the Company lacks a video advertising campaign to deliver to these video ad impressions.  The Company recognizes the difference between the contractually required fill rate and the number of video ads actually delivered on the publisher’s website, if any, as a cost of revenue as of the end of each applicable monthly period.  Historically, the impact of the difference between the contractually required fill rate and the number of ads delivered has not been material. Costs owed to publishers but not yet paid are recorded in the consolidated balance sheets as accounts payable and accrued expenses.
	Technology and Development Expenses
	Technology and development costs primarily consist of salaries, incentive compensation, stock-based compensation and other personnel-related costs for development, network operations and engineering personnel. Additional expenses in this category include costs related to development, quality assurance and testing of new technology, maintenance and enhancement of the Company’s existing technology and infrastructure as well as consulting, travel and other related overhead. The Company engages third-party consulting firms for various technology and development efforts, such as documentation, quality assurance, and support. Due to the rapid development and changes in the Company’s business and underlying technology to date, the Company has expensed development costs in the same period that those costs were incurred.
	Sales and Marketing Expenses
	Sales and marketing expenses primarily consist of salaries, incentive compensation, stock-based compensation and other personnel-related costs for marketing and creative employees and the advertiser focused, publisher focused and licensing solution focused sales and sales support employees. Additional expenses in this category include marketing programs, consulting, travel and other related overhead. These costs are expensed when incurred and are included in sales and marketing expenses. Advertising costs, which are comprised of print and internet advertising, were $833, $1,372 and $1,358 for the years ended December 31, 2013, 2012 and 2011, respectively.
	Stock-Based Compensation Expenses
The Company accounts for stock-based compensation expense under FASB ASC 718, “Compensation—Stock Compensation,” which requires the measurement and recognition of stock-based compensation expense based on estimated fair values, for all share-based payment awards made to employees and FASB ASC 505-50, “Equity-Based Payments to Non-Employees,” which requires the measurement and recognition of stock-based compensation expense based on the estimated fair value of services or goods being received, for all share-based payment awards made to other service providers and non-employees.
FASB ASC 718 requires companies to estimate the fair value of stock-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as an expense over the requisite service periods in the Company’s consolidated statements of operations.
The Company recognizes compensation expenses for the value of its awards, which have graded vesting based on service conditions, using the straight-line method, over the requisite service period of each of the awards, net of estimated forfeitures.
Calculating the fair value of the stock-based options requires the input of subjective assumptions, including the expected term of the stock-based awards and stock price volatility. The Company estimates the expected life of stock options granted based on the simplified method, which the Company believes, is representative of the actual characteristics of the awards. The Company estimates the volatility of the common stock on the date of grant based on the historic volatility of comparable companies in its industry. The Company selected the risk-free interest rate based on yields from United States Treasury zero-coupon issues with a term consistent with the expected life of the awards in effect at the time of grant. Estimated forfeitures are based on actual historical pre-vesting forfeitures. The Company has never declared or paid any cash dividends and has no plan to do so. Consequently, it used an expected dividend yield of zero.
In the event of modification of the conditions on which stock-based compensation was granted, an additional expense is recognized for any modification that increases the total fair value of the share-based payment arrangement or is otherwise beneficial to the employee/other service provider or non-employee at the modification date.
At December 31, 2013, accrued compensation, benefits and payroll taxes includes $1,614 of stock-based long-term incentive compensation expense related to the Company’s long-term sales incentive compensation plan.  Payments earned under the plan for the 2013 plan year will be made in stock-based awards to participants that remain employed with the Company through June 30, 2014.  If any participant in the Company’s long-term incentive compensation plan is not employed on June 30, 2014, such participant will forfeit any rights to receive payments under the plan.
Income Taxes
Income taxes represents income taxes paid or payable (or received or receivable) for the current year and includes any changes in deferred taxes during the year.  Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.  The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, as well as for operating loss and tax credit carry-forwards. The Company measures deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which the Company expects to recover or settle those temporary differences.  The Company recognizes the effect of a change in tax rates on deferred tax assets and liabilities in the results of operations in the period that includes the enactment date. Deferred income tax expense represents the change during the period in deferred tax assets and deferred tax liabilities.  The components of the deferred tax assets and liabilities are individually classified as current and non-current based on their characteristics.  The Company reduces the measurement of a deferred tax asset, if necessary, by a valuation allowance if it is more likely than not that the Company will not realize some or all of the deferred tax asset. As a result of the Company’s historical operating performance and the cumulative net losses incurred to date, the Company does not have sufficient objective evidence to support the recovery of the net deferred tax assets. Accordingly, the Company has established a valuation allowance against net deferred tax assets for financial reporting purposes because the Company believes it is more likely than not that these deferred tax assets will not be realized.
The Company accounts for uncertain tax positions by recognizing the financial statement effects of a tax position only when, based upon technical merits, it is “more-likely-than-not” that the position will be sustained upon examination. Potential interest and penalties associated with unrecognized tax positions are recognized in income tax expense.
Net Loss Per Share Attributable to Common Stockholders
Basic net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period.
Diluted net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period, adjusted to reflect potentially dilutive securities using the treasury stock method for warrants to purchase preferred stock, warrants to purchase common stock, preferred stock, stock option awards and restricted stock unit awards.  Due to the Company’s net loss attributable to common stockholders, (i) warrants to purchase preferred stock, (ii) warrants to purchase common stock, (iii) preferred stock, (iv) stock option awards, and (v) restricted stock unit awards were not included in the computation of diluted net loss per share attributable to common stockholders, as the effects would be anti-dilutive.  Accordingly, basic and diluted net loss per share attributable to common stockholders is equal for the periods presented.
Comprehensive Loss
Comprehensive loss consists of unrealized gains and losses on available-for-sale securities and currency translation adjustments. Total comprehensive loss and its components are presented in the accompanying Consolidated Statements of Comprehensive Loss.
Foreign Currency Translation Adjustments
The functional currency of the Company’s international subsidiaries is accounted for in their local currency. The Company translates the financial statements of these subsidiaries to U.S. dollars using period-end exchange rates for assets and liabilities, and average exchange rates for revenue and expenses. Translation gains and losses are recorded in accumulated other comprehensive income as a component of stockholders’ equity (deficit).  For the years ended December 31, 2013, 2012 and 2011, a cumulative translation adjustment of $(150), $(58) and $177, respectively, was recorded as a component of comprehensive loss in the consolidated financial statements. Realized and unrealized transaction gains and losses are included in the Consolidated Statements of Operations in the period in which they occur, except on inter-company balances considered to be long-term. Transaction gains and losses on inter-company balances which are considered to be long-term are recorded in accumulated other comprehensive income. Since 2012, the Company considered their inter-company balances to be long-term in nature. Net gain (loss) resulting from transactions denominated in foreign currencies was accounted for in the Company’s consolidated statements of operations and totaled $12, $28 and $(256) for the years ended December 31, 2013, 2012 and 2011.
Business Combinations
In business combinations, the Company determines the acquisition purchase price as the sum of the consideration provided. The underlying principles require that the Company recognize separately from goodwill the assets acquired and the liabilities assumed, generally at their acquisition date fair values. Goodwill as of the acquisition date is measured as the excess of consideration transferred and the net of the acquisition date fair values of the assets acquired and the liabilities assumed. While the Company uses its best estimates and assumptions as a part of the purchase price allocation process to accurately value assets acquired and liabilities assumed at the acquisition date, the Company’s estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded in the consolidated statements of operations. The direct transaction costs associated with the business combination are expensed as incurred.
When the Company issues stock-based awards to an acquired company’s selling stockholders, the Company evaluates whether the awards are contingent consideration or compensation for post-business combination services. The Company’s evaluation includes, among other things, whether the vesting of the stock-based awards is contingent on the continued employment of the selling stockholder beyond the acquisition date. If continued employment is required for vesting, the awards are treated as compensation for post-acquisition services and recognized as future compensation expense over the required service period.
Recently Issued Accounting Pronouncements
FASB Accounting Standards Update No. 2013-02 — Comprehensive Income: Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income
In February 2013, the FASB issued new authoritative guidance requiring new disclosures about reclassifications from accumulated other comprehensive income to net loss. This new guidance requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements where net loss is presented or in the notes thereto, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net loss but only if the amount reclassified is required under US GAAP to be reclassified to net loss in its entirety in the same reporting period.  For other amounts that are not required under US GAAP to be reclassified in their entirety to net loss, an entity is required to cross-reference to other disclosures required under US GAAP that provide additional detail about those amounts. The new guidance is effective prospectively for annual and interim periods beginning after December 15, 2012.  The Company adopted this guidance in its interim period beginning April 1, 2013. The adoption of this new guidance did not have a material impact on its consolidated financial statements and the required disclosures are provided in note 14.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Fair Value Measurements	'
	3.  Fair Value Measurements
	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.  The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement.  The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs when determining fair value.  If a financial instrument uses inputs that fall in different levels of the hierarchy, the instrument will be categorized based upon the lowest level of input that is significant to the fair value calculation.  The three-tiers are defined as follows:
	·Level 1. Observable inputs based on 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 requiring the Company to develop its own assumptions.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
	The Company evaluates its financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level to classify them for each reporting period.  This determination requires significant judgments to be made.  The following tables summarize the conclusions reached as of December 31, 2012:
		Balance at
		December 31,
		2012			Level 1			Level 2		Level 3
	Liabilities
	Warrants to purchase preferred stock(1)	$	1,103		$	—		$	—	$	1,103
	Total warrants to purchase preferred stock	$	1,103		$	—		$	—	$	1,103
	(1)         The Company used an option pricing model to determine the fair value of the warrants to purchase preferred stock.  Significant inputs included an estimate of the fair value of the Company’s preferred stock as of December 31, 2012, the remaining contractual life of the warrant, a risk-free rate of interest, and an estimate of the Company’s stock volatility using the volatilities of guideline peer companies.  In connection with the Company’s IPO, these warrants to purchase preferred stock were adjusted to fair value through July 2, 2013 and were subsequently reclassified to additional paid-in capital (refer to note 11).
	Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Level 3)
	The following tables present the changes in the Company’s Level 3 instruments measured at fair value on a recurring basis for the years ended December 31, 2013 and 2012:
		Warrants to Purchase Preferred Stock
		2013			2012
	Beginning balance at January 1,	$	1,103		$	1,127
	Mark-to-market income before reclassifications	(313		)	(24		)
	Reclassification to additional paid-in capital	(790		)	—
	Ending balance at December 31,	$	—		$	1,103
		Contingent
		Consideration on
		Acquisition(1)
		2012
	Beginning balance at January 1,	$	817
	Mark-to-market expense before settlement	46
	Settlement of contingent consideration	(863		)
	Ending balance at December 31,	$	—
	(1)         On February 11, 2011, the Company acquired all of the outstanding equity of Transpera. The purchase price included contingent consideration consisting of up to 169,131 shares of the Company’s common stock payable on the one year anniversary of the closing of the acquisition based on certain performance criteria being achieved. In arriving at the value of the contingent consideration, the Company used a valuation model based on future expectations combined with management’s judgment. In the then-absence of a public trading market, the Company exercised judgment and considered numerous objective and subjective factors to determine the fair value of the Company’s common stock.

Prepaid_Expenses_and_Other_Cur

Prepaid Expenses and Other Current Assets	12 Months Ended
	Dec. 31, 2013
Prepaid Expenses and Other Current Assets	'
Prepaid Expenses and Other Current Assets	'
	4.  Prepaid Expenses and Other Current Assets
	Prepaid expenses and other current assets consisted of:
		December 31,
		2013		2012
	Prepaid expenses	$	1,321	$	790
	Prepaid insurance	383		8
	Prepaid taxes	208		155
	Total prepaid expenses and other current assets	$	1,912	$	953

Property_and_Equipment_Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2013
Property and Equipment, Net	'
Property and Equipment, Net	'
	5.  Property and Equipment, Net
		December 31,
		2013			2012
	Cost:
	Computer hardware	$	3,908		$	2,885
	Leasehold improvements	1,422			849
	Furniture and fixtures	1,090			765
	Computer software	482			545
	Office equipment	104			28
		7,006			5,072
	Accumulated depreciation	(3,618		)	(3,077		)
	Total property and equipment, net of accumulated depreciation	$	3,388		$	1,995
	The depreciation expense related to property and equipment was $1,312, $1,104 and $956 for the years ended December 31, 2013, 2012 and 2011, respectively.
	The Company recorded a reduction of $771 and $443 to the cost and accumulated depreciation of fully depreciated equipment and leasehold improvements no longer in use for the years ended December 31, 2013 and 2012, respectively.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Acquisitions	'
Acquisitions	'
	6.  Acquisitions
	Transpera, Inc.
	On February 11, 2011, the Company acquired all of the outstanding equity of Transpera for $3,295 of the Company’s common stock.  Transpera owned and operated a technology platform that enables video advertising formats to be served on mobile devices, tablets and connected TVs.
	The purchase price included contingent consideration of up to 169,131 shares payable in one year based on the achievement of certain performance criteria.  The fair value of this consideration was determined to be $723 as of the acquisition date and was marked to market at fair value quarterly in other expenses.  On February 11, 2012, the Company issued 169,131 shares, which were valued at $863, upon satisfaction of the performance criteria.  The initial fair value was recorded as part of the purchase price while subsequent changes to fair value were reflected as other expense.
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the acquisition date.  The fair values presented are based on a preliminary valuation and are subject to adjustment during a measurement period of up to one year from the acquisition date.  The measurement period provides the Company with the ability to adjust the fair values of acquired assets and assumed liabilities for new information that is obtained about circumstances that existed as of the acquisition date.
	Total purchase price	$	3,295
	Fair value of assets acquired and liabilities assumed:
	Tangible assets acquired:
	Cash	$	12
	Accounts receivable	723
	Other current assets	73
	Total tangible assets acquired	808
	Identified intangible assets acquired	2,550
	Current liabilities assumed	(1,034		)
	Total assets acquired in excess of liabilities assumed	2,324
	Goodwill	986
	Adjustment to Transpera goodwill	(15		)
	Total purchase price	$	3,295
	In addition to the purchase price of $3,295, the Company issued an additional $300 of common stock on the acquisition date to satisfy certain pre-acquisition liabilities of Transpera.
	InPlay
	On January 17, 2012, the Company purchased InPlay from TubeMogul.  InPlay enabled publishers of online video content to manage and analyze the performance of advertisements displayed within their inventory.  Consideration consisted of $1,950 in cash.
	The following table summarizes the estimated fair values of the assets acquired at the acquisition date.  The fair values presented are based on a preliminary valuation and are subject to adjustment during a measurement period of up to one year from the acquisition date.  The measurement period provides the Company with the ability to adjust the fair values of acquired assets for new information that is obtained about circumstances that existed as of the acquisition date.
	Technology	$	900
	Customer relationships	200
	Trademarks and trade names	100
	Goodwill	750
	Total acquired assets	$	1,950
	Refer to note 7 for further discussion on impairment indicators related to intangible assets acquired from InPlay.  Other than the impairment indicator identified in note 7 below related to the InPlay customer relationships intangible asset, no other impairment indicators to intangible assets were identified.

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets, Net	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets, Net	'
Goodwill and Intangible Assets, Net	'
	7.  Goodwill and Intangible Assets, Net
	The changes in the carrying amount of goodwill as of December 31, 2013 and 2012 were as follows:
	Balance as of January 1, 2012	$	28,984
	Adjustment of Transpera goodwill	(15		)
	Goodwill — InPlay	750
	Balance as of December 31, 2012 and 2013	$	29,719
	There were no changes in the carrying amount of goodwill as of December 31, 2013.
	Information regarding the Company’s acquisition-related intangible assets, net is as follows:
	As of December 31, 2013:
		Gross Carrying			Accumulated			Net Carrying
		Amount			Amortization			Amount
	Technology	$	24,500		$	(10,865	)	$	13,635
	Customer relationships(1)	8,900			(3,109		)	5,791
	Trademarks and trade names	1,650			(739		)	911
	Non-competition agreements	600			(600		)	—
	Domain name(2)	50			—			50
	Total acquisition-related intangible assets, net	$	35,700		$	(15,313	)	$	20,387
	As of December 31, 2012:
		Gross Carrying			Accumulated			Net Carrying
		Amount			Amortization			Amount
	Technology	$	24,500		$	(7,239	)	$	17,261
	Customer relationships	8,900			(1,988		)	6,912
	Trademarks and trade names	1,650			(488		)	1,162
	Non-competition agreements	600			(600		)	—
	Domain name(2)	50			—			50
	Total acquisition-related intangible assets, net	$	35,700		$	(10,315	)	$	25,385
	(1)         During October 2013, the Company performed an impairment test relating to customer relationships acquired in connection with the acquisition of InPlay in 2012 and, based on such test, concluded that it is impaired.  The Company recorded an impairment amount of $132 to reduce the carrying value of this intangible asset, which is included as part of amortization expense.  Other than the impairment loss above, there were no other impairment losses identified.
	(2)         This intangible asset is considered to have an indefinite useful life.
	Amortization expense amounted to $4,998, $4,888 and $5,132 for the years ended December 31, 2013, 2012 and 2011, respectively.
	The estimated future amortization expenses of the acquisition-related intangible assets that are considered to have a definite life, as of December 31, 2013, for the next five years and thereafter are as follows:
	2014	$	4,836
	2015	4,836
	2016	4,420
	2017	3,956
	2018	780
	2019 and thereafter	1,509
		$	20,337

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
Income Taxes	'
	8.  Income Taxes
	The components of the Company’s (loss) income before income taxes for the years ended December 31, 2013, 2012 and 2011 are as follows:
		Year Ended
		December 31,
		2013			2012			2011
	Loss before income taxes:
	Domestic	$	(14,408	)	$	(13,871	)	$	(18,446	)
	Foreign	1,098			(2,493		)	(2,356		)
	Total loss before income taxes	$	(13,310	)	$	(16,364	)	$	(20,802	)
	The Company’s income tax expense, which consists of minimum US state and local taxes, consists of the following:
		Year Ended
		December 31,
		2013			2012			2011
	Current:
	US Federal	$	—		$	—		$	—
	US State and local	199			280			223
	Foreign	7			—			—
	Total current income tax expense	206			280			223
	Deferred:
	US Federal	—			—			—
	US State and local	—			—			—
	Foreign	—			—			—
	Total deferred income tax expense	—			—			—
	Total income tax expense	$	206		$	280		$	223
	A reconciliation between the U.S. federal statutory income tax rate to the effective tax rate, by applying such rates to loss before income taxes, for the years ended December 31, 2013, 2012 and 2011 are as follows:
		2013		2012		2011
	U.S. federal statutory income tax rate	(34.00	)%	(34.00	)%	(34.00	)%
	State income tax rate, net of federal tax benefit	6.69		1.11		0.71
	Change in income tax rates	(8.33	)	(4.49	)	(0.26	)
	Other	(0.45	)	(1.40	)	(5.88	)
	Stock-based compensation expense	3.85		2.99		2.32
	Change in deferred tax asset valuation	33.79		37.5		38.18
	Effective tax rate	1.55	%	1.71	%	1.07	%
	Significant components of the Company’s deferred tax assets and liabilities are summarized as follows:
		December 31,
		2013			2012
	Deferred tax assets:
	Net operating losses and tax credits	$	37,023		$	36,168
	Capitalization of research and development and start-up costs	1,203			1,191
	Stock-based compensation expense	1,136			1,228
	Accrued expenses	737			—
	Depreciation and amortization expense	394			220
	Allowance for doubtful accounts	388			425
	Deferred rent	307			253
	Other	176			193
	Total deferred tax assets before valuation allowance	41,364			39,678
	Valuation allowance	(33,213		)	(29,671		)
	Total deferred tax assets, net of valuation allowance	8,151			10,007
	Deferred tax liabilities:
	Intangible assets	(8,126		)	(9,983		)
	Depreciation and amortization expense	(18		)	(17		)
	Other	(7		)	(7		)
	Total deferred tax liabilities	(8,151		)	(10,007		)
	Total deferred tax assets, net	$	—		$	—
	For financial and tax reporting purposes, the Company has incurred net operating losses in each period since its inception and, therefore, a significant portion of the net deferred tax assets recognized relate to such net operating losses.  In determining whether the Company may realize the benefits from these deferred tax assets, the Company considers all available objective and subjective evidence, both positive and negative.  Based on the weight of such evidence, a valuation allowance on a jurisdiction by jurisdiction basis is necessary for some portion, or all, of the net deferred tax assets since the Company cannot be assured that, more likely than not, such amounts will be realized.  Based on the available objective and subjective evidence, including the Company’s history of net operating losses, management believes it is more likely than not that the net deferred tax assets will not be fully realizable at December 31, 2013 and 2012.  Accordingly, the Company provided a valuation allowance on the entire net deferred tax assets balance to reflect the uncertainty regarding the realizability of these assets for the periods presented.
	For the year ended December 31, 2013, the Company’s net valuation allowance has increased by $3,542 to $33,213, compared to December 31, 2012.
	As of December 31, 2013, the Company has US federal and state net operating loss carry-forwards of approximately $84,681, and German and United Kingdom net operating loss carry-forwards of $6,787 and $4,082, respectively, which are available to reduce future taxable income in those jurisdictions. The US federal net operating losses will expire in years 2026 through 2033. The majority of this amount represents acquired tax loss carry-forwards of Transpera and ScanScout, which are subject to limitation on future utilization under Section 382 of the Internal Revenue Code of 1986. Section 382 imposes limitations on the availability of a company’s net operating losses after a more than 50 percentage point ownership change occurs. It is estimated that the effect of Section 382 will generally limit the amount of the net operating loss carry-forwards of Transpera and ScanScout that are available to offset future taxable income to approximately $160 and $2,220, respectively, annually. The overall determination of the annual loss limitation is subject to interpretation, and, therefore, the annual loss limitation could be subject to change.
	Included in the U.S. federal and state net operating loss carry-forwards, but not included in the table above are approximately $2,708 of net operating losses from excess tax deductions attributable to equity compensation. The tax benefit of the excess tax deduction attributable to stock-based compensation expense will be recorded to additional paid-in-capital when it reduces US federal income taxes payable.
	The Company did not record any amounts related to uncertain tax positions or tax contingencies at December 31, 2013 and 2012.  As of December 31, 2013 and 2012, the primary tax jurisdictions in which the Company is subject to tax were the U.S. federal and state jurisdictions (primarily the State and City of New York), Germany, Singapore and United Kingdom. Since the Company is in a net operating loss position, the Company is generally subject to US federal and state income tax examinations by tax authorities for all years for which a net operating loss carry-forward is available. The Company’s open tax years extend back to 2005. In the event that the Company concludes that it is subject to interest or penalties arising from uncertain tax positions, the Company will record interest and penalties as a component of income tax expense. No amounts of interest or penalties were recognized in the Consolidated Statements of Operations for the years ended December 31, 2013, 2012 and 2011.

Accounts_Payable_and_Accrued_E

Accounts Payable and Accrued Expenses	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Expenses	'
Accounts Payable and Accrued Expenses	'
	9.  Accounts Payable and Accrued Expenses
	Accounts payable and accrued expenses consisted of:
		December 31,
		2013		2012
	Trade accounts payable	$	24,121	$	15,191
	Accrued compensation, benefits and payroll taxes(1)	5,612		3,627
	Accrued cost of sales	1,267		1,058
	Other payables and accrued expenses	1,312		1,199
	Total accounts payable and accrued expenses	$	32,312	$	21,075
	(1)         At December 31, 2013, accrued compensation, benefits and payroll taxes includes $1,614 of stock-based long-term incentive compensation expense related to the Company’s long-term sales incentive compensation plan.  Payments earned under the plan for the 2013 plan year will be made in stock-based awards to participants that remain employed with the Company through June 30, 2014.  If any participant in the Company’s long-term incentive compensation plan is not employed on June 30, 2014, such participant will forfeit any rights to receive payments under the plan.

Credit_Facility_and_Accrued_In

Credit Facility and Accrued Interest Expense	12 Months Ended
	Dec. 31, 2013
Credit Facility and Accrued Interest Expense	'
Credit Facility and Accrued Interest Expense	'
	10.  Credit Facility and Accrued Interest Expense
	The Company had an existing loan and security agreement with Silicon Valley Bank (“SVB”), which provided for a $7,000 revolving working capital credit facility (“credit facility”).
	In February 2011, the credit facility was amended to, among other things, revise the interest rate to be equal to SVB’s prime rate plus 1.0% and provide for a fee of 0.20% for any unused portion of the revolving credit facility. Such fee is payable quarterly but no fee is charged for a particular quarter if the average principal amount of borrowings during such quarter is more than $10,000.
	On December 31, 2011, the Company expanded the borrowing capacity under the credit facility to the lesser of $25,000 and a borrowing base equal to 80% of eligible accounts receivable.  Furthermore, on such date the credit facility was amended to, among other things, revise the interest rate to SVB’s prime rate plus 0.5% and provide for a termination date of December 30, 2014.
	On July 30, 2013, the Company repaid $6,033, in principal borrowings and accrued interest expense.  As of December 31, 2013, the Company did not have any borrowings outstanding under the credit facility.  As of December 31, 2012, the Company had $6,000 aggregate principal amount of borrowings outstanding under the credit facility.
	The credit facility includes customary conditions to borrowing, covenants and events of default.  The credit facility also contains a financial covenant requiring that the ratio of current assets to current liabilities (excluding deferred revenue) be at least 1.25 to 1.  The Company was in compliance with all covenants under the credit facility as of each December 31, 2013 and 2012.
	As collateral for its obligations under the credit facility, the Company granted a first priority security interest to SVB in all assets of the Company other than intellectual property.  The Company has agreed not to pledge its intellectual property as collateral without SVB’s prior written consent.

Warrants_to_Purchase_Preferred

Warrants to Purchase Preferred Stock and Common Stock	12 Months Ended
	Dec. 31, 2013
Warrants to Purchase Preferred Stock and Common Stock	'
Warrants to Purchase Preferred Stock and Common Stock	'
	11.  Warrants to Purchase Preferred Stock and Common Stock
	In connection with the Company’s entry into, and subsequent amendments of, its credit facility in 2010, 2008 and 2007, warrants to purchase preferred stock were issued to SVB.  In addition, in connection with the acquisition of ScanScout in 2010, the Company exchanged ScanScout’s pre-acquisition preferred stock warrants into warrants to purchase a new series of preferred stock of the Company that was created as part of the acquisition.
	The warrants are exercisable at any time prior to expiration.  Freestanding warrants and other similar instruments on shares that are redeemable (either put-able or mandatorily redeemable) are accounted for as liabilities, regardless of the timing of the redemption feature or price, even though the underlying shares may be classified as equity.
	The following table summarizes the Company’s outstanding warrants to purchase preferred stock as of December 31, 2012:
								Fair Value
								as of
		Grant	Expiration		Exercise		Warrants	December 31,
		Date	Date		Price		Outstanding	2012
	Series A	June 7, 2007	June 7, 2017		$	1.27	35,520	$	299
	Series B-1	December 8, 2008	December 7, 2018		$	4.86	33,930	246
	Series C	February 8, 2010	February 8, 2020		$	3.79	31,659	245
	Series 1	December 8, 2010	June 30, 2017		$	2.46	31,130	256
	Series 3	December 8, 2010	February 6, 2015		$	5.75	8,694	57
	Totals						140,933	$	1,103
	Mark-to-market (income) expense related to the fair value measurement of the warrants were $(313), $(24) and $279 for the years ended December 31, 2013, 2012 and 2011, respectively.
	On July 2, 2013, in connection with the closing of the Company’s IPO, these warrants to purchase preferred stock were converted into warrants to purchase 142,534 shares of common stock (refer to note 2), which includes an anti-dilution adjustment to the conversion ratio of the Series B-1 warrants to purchase preferred stock.  This conversion resulted in the warrants being reclassified to additional paid-in capital (refer to note 2).
	On July 25, 2013, SVB exercised, in full, the following warrants to acquire common stock pursuant to a cashless net exercise: (i) warrants to acquire 17,607 shares of common stock, net of 14,052 shares of common stock tendered to the Company, at an exercise price of $3.79 per share, with an expiration date of February 8, 2020, (ii) warrants to acquire 16,210 shares of common stock, net of 19,321 shares of common stock tendered to the Company, at an exercise price of $4.64 per share, with an expiration date of December 7, 2018 and (iii) warrants to acquire 30,250 shares of common stock, net of 5,270 shares of common stock tendered to the Company, at an exercise price of $1.27 per share, with an expiration date of June 7, 2017.  The number of shares tendered to the Company to satisfy the exercise price for the warrants was based on the closing price of the Company’s common stock on July 24, 2013.  In aggregate, the Company issued 64,067 shares of common stock to SVB in connection with these exercises.
	The following table summarizes the Company’s outstanding warrants to purchase common stock as of December 31, 2013:
	Grant	Expiration	Exercise			Warrants
	Date	Date	Price			Outstanding
	December 8, 2010	June 30, 2017	$	2.46		31,130
	December 8, 2010	February 6, 2015	$	5.75		8,694
						39,824

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies	'
Commitments and Contingencies	'
	12.  Commitments and Contingencies
	Operating Commitments
	The Company leases office space under non-cancellable operating lease agreements that expire at various dates.  In addition, the Company utilizes co-location services for its servers and other computer hardware.  These services are multi-year, non-cancellable agreements that are similar in form to a lease on office space.  The Company also contracted for other marketing services under various non-cancellable agreements that expire at various dates through 2015.
	As of December 31, 2013, future minimum payment commitments required under the Company’s non-cancellable office space, co-location agreements and marketing services for the next five years and thereafter are as follows:
	2014	$	1,777
	2015	1,332
	2016	1,225
	2017	1,108
	2018	972
	2019 and thereafter	2,281
		$	8,695
	Total rent expenses for the years ended December 31, 2013, 2012 and 2011 amounted to $1,479, $1,397 and $1,308, respectively.
	Letters of Credit
	At December 31, 2013 and 2012, the Company had outstanding letters of credit of $600 and $1,221, respectively, related to two office spaces in New York, New York and Boston, Massachusetts. Refer to note 2 for further discussion on letters of credit outstanding.
	Legal Contingencies
	The Company is occasionally involved with various claims and litigation during the normal course of business.  Reserves are established in connection with such matters when a loss is probable and the amount of such loss can be reasonably estimated.  As of December 31, 2013 and 2012, no material reserves were recorded.  No reserves are established for losses which are only reasonably possible.  The determination of probability and the estimation of the actual amount of any such loss are inherently unpredictable, and it is therefore possible that the eventual outcome of such claims and litigation could exceed the estimated reserves, if any.  Based upon the Company’s experience, current information and applicable law, it generally does not believe it is reasonably probable that any proceedings or possible related claims will have a material effect on its financial statements.
	In November 2013, a putative class action lawsuit was filed in the United States District Court for the Southern District of New York against the Company, its directors and certain of its executive officers. The lawsuit alleges certain misrepresentations by the Company in connection with its IPO concerning its business and prospects.  The lawsuit seeks unspecified damages.  On February 7, 2014, the Court entered an order appointing lead plaintiff and lead counsel.  On March 3, 2014, the Court entered an order requiring that the lead plaintiff file an amended complaint on or before April 1, 2014.  The Company intends to vigorously defend against these claims and to seek dismissal of the amended complaint.  Due to the early stage of these proceedings, the Company cannot predict the likely outcome of the lawsuit, and an adverse result could have a material effect on its financial statements.  Accordingly, there were no reserves recorded during the year ended December 31, 2013.

Preferred_Stock_Common_Stock_a

Preferred Stock, Common Stock and Stockholders' Equity (Deficit)	12 Months Ended
	Dec. 31, 2013
Preferred Stock, Common Stock and Stockholders' Equity (Deficit)	'
Preferred Stock, Common Stock and Stockholders' Equity (Deficit)	'
	13.  Preferred Stock, Common Stock and Stockholders’ Equity (Deficit)
	Reverse Stock Split
	On June 13, 2013, the Company’s board of directors and stockholders approved an amendment and restatement of the Company’s amended and restated certificate of incorporation effecting a 1-for-1.5 reverse stock split of the Company’s issued and outstanding shares of common stock, preferred stock and the renaming of the Series I common stock to common stock.  The par value of the common stock was not adjusted as a result of the reverse stock split.  The original issue prices for all series of preferred stock were proportionately adjusted to reflect the reverse stock split.  All authorized, issued and outstanding shares of common stock, preferred stock and per share amounts presented in the unaudited interim consolidated financial statements have been retroactively adjusted to reflect this reverse stock split and the renaming of the “Series I common stock” to “common stock” for all periods presented.
	Amended and Restated Certificate of Incorporation
	On July 2, 2013, the Company’s board of directors and stockholders approved an amendment and restatement of the Company’s amended and restated certification of incorporation to, among other things, (i) increase the total number of shares of the Company’s common stock which the Company is authorized to issue to 250,000,000 shares, (ii) eliminate all references to the various series of preferred stock that were previously authorized (including certain protective measures held by the various series of preferred stock), except for the reference to 10,000,000 shares of undesignated preferred stock that may be issued, and with terms to be set, by the Company’s board of directors, which rights could be senior to those of the Company’s common stock, and (iii) eliminate all references to the series II common stock.
	Preferred Stock
	As of December 31, 2013, there were no outstanding shares of preferred stock, refer to note 2.
	As of December 31, 2012, the Company had several classes of $0.0001 par value preferred stock.
	Preferred stock consists of the following as of December 31, 2012:
	Series	Issued		Authorized	Issued and	Original		Liquidation		Carrying
					Outstanding	Issue		Preference		Value
						Price				as of
										December 31,
										2012
	Series A	September 2006		6,861,975	6,826,451	$	1.2669	$	8,648	$	8,402
	Series B	December 2007		3,500,732	3,500,729	$	3.1422	$	11,000	10,949
	Series B-1	May 2008		548,032	514,102	$	4.8629	$	2,500	2,479
	Series C	February and		5,308,216	5,276,554	$	3.7904	$	20,000	19,932
	Series D	April 2010		5,453,975	5,453,970	$	7.3341	$	40,000	39,931
	Series E	December 2010		238,000	236,108	$	8.0051	$	1,890	1,890
	Series 1	December 2010		979,333	947,711	$	2.4575	$	2,329	5,217
	Series 2	December 2010		1,822,000	1,821,455	$	4.1387	$	7,538	12,404
	Series 3	December 2010		937,333	928,054	$	5.7507	$	5,337	7,517
	Series 4	December 2010		3,093,333	3,092,932	$	2.7548	$	8,520	17,722
	Series F	September 2011		4,000,000	3,965,126	$	9.3314	$	37,000	36,023
				32,742,929	32,563,192					$	162,466
	Dividends
	The holders of preferred stock, which are no longer outstanding as of December 31, 2013, were entitled to receive, when and if declared by the Board of Directors out of funds legally available, dividends at the following annual rates:
	Series	Dividend Rate
	Series A	$	0.1014
	Series B	$	0.2514
	Series B-1	$	0.3891
	Series C	$	0.3033
	Series D	$	0.5868
	Series E	$	0.64035
	Series 1	$	0.19665
	Series 2	$	0.33105
	Series 3	$	0.46005
	Series 4	$	0.22035
	Series F	$	0.74655
	The terms of the preferred stock, which are no longer outstanding as of December 31, 2013, provided that no dividends or other distributions would be made with respect to common stock until all declared dividends on the preferred stock had been paid.  No dividends have been declared or paid by the Company through the date of this report.
	Conversion
	All shares of preferred stock, which are no longer outstanding as of December 31, 2013, automatically converted into common stock upon the closing of the Company’s IPO on July 2, 2013 (refer to note 2).  Except for the Series B-1 and Series F preferred stock, all preferred stock converted on a one for one basis.  The Series B-1 preferred stock converted into common stock on a 1:1.04719 basis and the Series F preferred stock converted into common stock in accordance with the Series F preferred stock ratchet provision described below under the heading “Series F Preferred Stock Ratchet Provision.”
	Liquidation Preferences
	The preferred stock, which is no longer outstanding as of December 31, 2013, entitled its holders to a liquidation preferences over common stockholders based on the series of preferred stock held.  In the event of liquidation, dissolution, or winding up of the Company, each holder of preferred stock was entitled to be paid out of available assets on a pro-rata basis based on the liquidation preference of each series plus all declared but unpaid dividends.  After the preferential amounts had been distributed by the Company, the holders of preferred stock would then participate with the common stockholders in the distribution of remaining available assets.
	Voting
	The preferred stock, which is no longer outstanding as of December 31, 2013, entitled its holders to a number of votes equal to the number of shares of common stock into which the shares of convertible preferred stock so held could be converted.
	Series F Preferred Stock Ratchet Provision
	The terms of the Series F preferred stock, which are no longer outstanding as of December 31, 2013, provided that the ratio at which each share of such series automatically converted into shares of common stock would increase, from a 1:1 basis, if a qualified IPO price was below $13.997 per share, which represents the original issue price of $9.3314 (the “conversion price”) adjusted for other anti-dilution provisions pursuant to the terms of the Series F preferred stock.  The Company therefore concluded that such conversion ratio and conversion price are contingently adjustable based on a future event and such effects will not be recognized in earnings until such contingency has been resolved, in this case July 2, 2013.
	Based on the Company’s IPO price of $10.00 per share, the conversion ratio automatically increased to a 1:1.3997 basis, with the conversion price automatically adjusting and decreasing to $6.6667 (the “adjusted conversion price”).  As a result, on July 2, 2013 upon the closing of the Company’s IPO, the outstanding shares of Series F preferred stock automatically converted into an aggregate total of 5,549,989 shares of common stock, which included 1,584,863 additional shares of common stock related to the ratchet provision described above.
	As the fair value of the common stock to be received upon conversion (the IPO price of $10.00 per share) of the Series F preferred stock was greater than the adjusted conversion price, the conversion of the Series F preferred stock resulted in a beneficial conversion feature, analogous to a preferred stock dividend.  The beneficial conversion feature was calculated as the difference between the number of shares of common stock each holder of such series would receive upon the automatic conversion and the number of shares contingently issuable just prior to the automatic conversion based on the initial conversion price multiplied by the IPO price of $10.00 per share, which represents the fair value of the common stock on the date of conversion.  On July 2, 2013, the Company recorded a one-time $15,849 non-cash preferred stock deemed dividend related to the issuance of additional common shares resulting from the ratchet provision.  Such non-cash preferred stock deemed dividend results in an increase to net loss to arrive at net loss attributable to common stockholders and, consequently, results in an adjustment to the Company’s computation of net loss attributable to common stockholders per share.
	Common Stock
	As of December 31, 2013, the authorized capital stock of the Company consists of 250,000,000 shares of common stock, with 49,998,274 shares of common stock outstanding as of such date.
	As of December 31, 2012, the Company had two classes of $0.0001 par value common stock as follows:
		Authorized		Outstanding
		as of		as of
	Series	December 31, 2012		December 31, 2012
	Common stock	50,000,000		6,674,905
	Series II	2,333,333		1,047,357
	Total common stock	52,333,333		7,722,262
	The Company’s two classes of common stock were identical in all significant respects.  Each share was entitled to one vote and both classes of shares were subordinate to the preferred stock in the payment of dividends and liquidation preferences.  The Series II common stock automatically converted into common stock upon the closing of the Company’s IPO on July 2, 2013 (refer to note 2).  Following the Company’s IPO, the Company has one class of common stock.

Changes_in_Accumulated_Other_C

Changes in Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2013
Changes in Accumulated Other Comprehensive Income	'
Changes in Accumulated Other Comprehensive Income	'
	14.  Changes in Accumulated Other Comprehensive Income
	The following table provides the components of accumulated other comprehensive income:
					Unrealized
					Gain On
		Foreign			Short-term
		Currency			Investments
		Translation			Available
		Adjustment			For Sale			Total
	Beginning Balance at January 1, 2013	$	345		$	—		$	345
	Other comprehensive loss before reclassifications	(150		)	—			(150		)
	Amounts reclassified from accumulated other comprehensive income	—			—			—
	Ending Balance at December 31, 2013	$	195		$	—		$	195
					Unrealized
					Gain On
		Foreign			Short-term
		Currency			Investments
		Translation			Available
		Adjustment			For Sale			Total
	Beginning Balance at January 1, 2012	$	403		$	(7	)	$	396
	Other comprehensive loss before reclassifications	(58		)	—			(58		)
	Amounts reclassified from accumulated other comprehensive income	—			7			7
	Ending Balance at December 31, 2012	$	345		$	—		$	345

StockBased_Compensation_Expens

Stock-Based Compensation Expense	12 Months Ended
	Dec. 31, 2013
Stock-Based Compensation Expense	'
Stock-Based Compensation Expense	'
	15.  Stock-Based Compensation Expense
	The Company included stock-based compensation expense related to all of the Company’s stock-based awards in various operating expense categories for the years ended December 31, 2013, 2012 and 2011 as follows:
		2013			2012			2011
	Technology and development	$	549		$	422		$	507
	Sales and marketing	1,188			1,020			670
	General and administrative	1,667			1,477			1,706
	Total stock-based compensation expense	$	3,404		$	2,919		$	2,883
	Stock-Based Incentive Plans
	On June 26, 2013, the Company adopted the 2013 Equity Incentive Plan (“2013 Plan”).  The Company has stock option awards outstanding under four stock-based incentive plans as of December 31, 2012 and under five stock-based incentive plans as of December 31, 2013, including, in each case, two plans that were assumed as part of the acquisition of ScanScout.  The Company has restricted stock unit awards outstanding under its 2013 Plan.
	Plan Provisions Under the 2013 Equity Incentive Plan
	Upon the effectiveness of the Company’s IPO, the Board of Directors determined that the 2013 Plan would be the only plan under which stock-based awards will be issued by the Company on a going-forward basis.  The 2013 Plan provides for the awards of incentive stock options, non-qualified stock options, restricted stock, restricted stock units and other stock-based awards; however, only incentive and non-qualified stock option awards and restricted stock unit awards have been issued through December 31, 2013 under the 2013 Plan.  The 2013 Plan states that awards may be granted to such non-employee directors, officers, employees and consultants as the Board of Directors shall in its discretion select.  Only employees of the Company are eligible to receive grants of incentive stock option awards.  Stock option awards are generally granted at the fair market value of the Company’s common stock on the date of grant.  Stock option grants generally vest over periods up to four years, with the first 25% of the grant vesting after one year, and monthly vesting thereafter.  Stock option grants generally have a term not to exceed a total of 10 years.  Restricted stock unit awards are generally granted at the fair market value of the Company’s common stock on the date of grant.  Restricted stock unit awards granted to our non-employee directors generally vest 100% after a period of one year.  As of December 31, 2013, there were 308,769 shares of common stock that may be issued pursuant to stock-based awards available for issuance under the 2013 Plan.
	Stock Option Awards Outstanding
	The following table presents summary information of the Company’s stock option awards outstanding and exercisable under all plans as of December 31, 2013:
		Options Outstanding							Options Exercisable
				Weighted										Weighted
				Average		Weighted					Weighted			Average
				Remaining		Average					Average			Remaining
				Contractual		Exercise					Exercise			Contractual
		Options		Life		Price			Options		Price			Life
	Range of Exercise Prices	Outstanding		(Years)		Per Share			Exercisable		Per Share			(Years)
	$0.20 to $0.26	364,347		3.19		$	0.21		364,347		$	0.21		3.19
	$0.44 to $0.53	64,112		5.73		0.49			64,112		0.49			5.73
	$0.63 to $0.84	370,100		4.51		0.8			370,100		0.8			4.51
	$1.11 to $1.49	1,158,444		6.69		1.26			1,154,366		1.26			6.69
	$2.66 to $4.28	3,106,814		7.62		4.22			1,950,787		4.2			7.09
	$5.01 to $5.90	1,576,893		8.49		5.31			598,352		5.15			8.26
	$8.15 to $9.64	662,051		9.53		8.44			5,594		8.15			9.42
		7,302,761		7.44		3.96			4,507,658		2.92			6.6
	The following table presents a summary of the Company’s stock option award activity under all plans and related information, without regard for estimated forfeitures, for the year ended December 31, 2013:
				Weighted					Weighted					Weighted
				Average					Average					Average
				Exercise					Exercise					Exercise
				Price					Price					Price
		Exercisable		Per Share			Non-vested		Per Share			Outstanding		Per Share
	Stock option awards outstanding as of December 31, 2012	3,895,442		$	2.36		2,984,477		$	4.55		6,879,919		$	3.3
	Stock option awards granted	—		$	—		1,529,416		$	6.41		1,529,416		$	6.41
	Stock option awards forfeited	(103,007	)	$	4.14		(463,938	)	$	5.01		(566,945	)	$	4.73
	Stock option awards exercised	(539,629	)	$	1.7		—		$	—		(539,629	)	$	1.7
	Stock option awards vested	1,254,852		$	4.2		(1,254,852	)	$	4.2		—		$	—
	Stock option awards outstanding as of December 31, 2013	4,507,658		$	2.92		2,795,103		$	5.64		7,302,761		$	3.96
	The weighted average grant date fair value of stock option awards granted during the years ended December 31, 2013, 2012 and 2011 was $3.23, $2.34 and $2.46 per share, respectively.  As previously discussed, stock option awards are generally granted at the fair market value of the Company’s common stock on the date of grant, generally vest over periods up to four years, have a one year cliff with monthly vesting thereafter, and have terms not to exceed 10 years.  The total intrinsic value of stock option awards exercised during the years ended December 31, 2013, 2012 and 2011 was $3,525, $1,507 and $1,573, respectively.  Cash proceeds received from stock option awards exercised for the years ended December 31, 2013 and 2012 was $912 and $433, respectively.
	The total fair value of stock option awards that vested during the years ended December 31, 2013 and 2012 was $2,802 and $2,855.  There was $6,337 of total unrecognized compensation cost related to non-vested stock option awards granted under the Company’s equity incentive plans as of December 31, 2013.  This cost is expected to be recognized over a weighted-average period of 2.79 years.
	The fair value for stock option awards granted under the stock option plan was estimated at the date of grant using the Black-Scholes option pricing model and the following assumptions for grants during the years ended December 31, 2013, 2012 and 2011:
		2013		2012		2011
	Volatility	47% - 54	%	56% - 57	%	54%-56	%
	Risk-free interest rate	0.86% - 1.88	%	0.60% - 1.17	%	1.36%-2.87	%
	Expected life (in years)	5.50-6.08		5.12-6.09		6.77
	Dividend yield	0	%	0	%	0	%
	Restricted Stock Unit (RSU) Awards Outstanding
	The following table presents a summary of the Company’s restricted stock unit award activity under all plans and related information, without regard for estimated forfeitures, for the year ended December 31, 2013:
				Weighted Average
		Restricted		Grant Date
		Stock Unit		Fair Value
		Awards		Per Share
	Restricted stock unit awards outstanding as of December 31, 2012	—		$	—
	Restricted stock unit awards granted	80,119		$	9.67
	Restricted stock unit awards forfeited	(10,000	)	$	10
	Restricted stock unit awards restriction lapses	—		$	—
	Restricted stock unit awards outstanding as of December 31, 2013	70,119		$	9.63
		Restricted
		Stock Unit
		Awards
	Aggregate grant date fair value of restricted stock unit awards outstanding as of December 31, 2013	$	675
Number of restricted stock unit awards vested during the year ended December 31, 2013	—
Number of restricted stock unit awards non-vested as of December 31, 2013	70,119
There was $390 of total unrecognized compensation cost related to non-vested restricted stock unit awards.  This cost is expected to be recognized over a period of less than one year.

Net_Loss_Per_Share_Attributabl

Net Loss Per Share Attributable to Common Stockholders	12 Months Ended
	Dec. 31, 2013
Net Loss Per Share Attributable to Common Stockholders	'
Net Loss Per Share Attributable to Common Stockholders	'
	16.  Net Loss Per Share Attributable to Common Stockholders
	Basic net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period.
	Diluted net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period, adjusted to reflect potentially dilutive securities using the treasury stock method for warrants to purchase preferred stock, warrants to purchase common stock, preferred stock, stock option awards and restricted stock unit awards.  Due to the Company’s net loss attributable to common stockholders, (i) warrants to purchase preferred stock, (ii) warrants to purchase common stock, (iii) preferred stock, (iv) stock option awards, and (v) restricted stock unit awards were not included in the computation of diluted net loss per share attributable to common stockholders, as the effects would be anti-dilutive.  Accordingly, basic and diluted net loss per share attributable to common stockholders is equal for the following periods presented:
		Year Ended
		December 31,
		2013			2012			2011
	Numerator:
	Net loss	$	(13,516	)	$	(16,644	)	$	(21,025	)
	Series F preferred stock deemed dividend	(15,849		)	—			—
	Net loss attributable to common stockholders	$	(29,365	)	$	(16,644	)	$	(21,025	)
	Denominator:
	Weighted average number of shares of common stock outstanding for basic and diluted net loss per share attributable to common stockholders	28,761,700			7,499,986			6,952,952
	Basic and diluted net loss per share attributable to common stockholders	$	(1.02	)	$	(2.22	)	$	(3.02	)
	The following securities were outstanding during the periods presented below and have been excluded from the calculation of diluted net loss per share attributable to common stockholders per share because the effect is anti-dilutive:
		Year Ended
		December 31,
		2013		2012		2011
	Warrants to purchase preferred stock	—		140,933		140,933
	Warrants to purchase common stock	39,824		—		—
	Preferred stock	—		32,563,192		32,563,192
	Stock option awards	7,302,761		6,879,919		6,727,056
	Restricted stock unit awards	70,119		—		—
	Total anti-dilutive securities	7,412,704		35,584,044		39,431,181

Supplemental_Disclosure_of_Cas

Supplemental Disclosure of Cash Flow Information	12 Months Ended
	Dec. 31, 2013
Supplemental Disclosure of Cash Flow Information	'
Supplemental Disclosure of Cash Flow Information	'
	17.  Supplemental Disclosure of Cash Flow Information
		Year Ended
		December 31,
		2013		2012		2011
	Supplemental disclosure of cash flow activities
	Cash paid for income taxes	$	308	$	249	$	310
	Cash paid for interest expense	$	127	$	234	$	323
	Supplemental disclosure of non-cash investing activities
	Common stock issued in connection with the acquisition of Transpera, Inc.	$	—	$	863	$	2,883
	Supplemental disclosure of non-cash financing activities
	Common stock issued in connection with the conversion of preferred stock	$	162,657	$	—	$	—
	Common stock issued in connection with the Series F preferred stock deemed dividend	$	15,849	$	—	$	—
	Reclassification of liability warrants to equity warrants	$	790	$	—	$	—

Segment_and_Geographic_Informa

Segment and Geographic Information	12 Months Ended
	Dec. 31, 2013
Segment and Geographic Information	'
Segment and Geographic Information	'
	18.  Segment and Geographic Information
	Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, in deciding how to allocate resources and assess performance.  The Company’s chief operating decision maker is its Chief Executive Officer (“CEO”).  The CEO reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance.  As such, the Company has concluded that its operations constitute one operating and reportable segment.
	Substantially all assets were held in the United States as of each December 31, 2013 and 2012 and substantially all revenue was generated through sales personnel in the United States for the years ended December 31, 2013, 2012 and 2011.

Quarterly_Results_of_Operation

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Results of Operations (Unaudited)	'
Quarterly Results of Operations (Unaudited)	'
	19.  Quarterly Results of Operations (Unaudited)
		Three Months Ended
	2013	March 31,			June 30,			September 30,			December 31,
	Revenue	$	24,765		$	35,465		$	35,267		$	36,299
	Gross profit	$	10,924		$	16,494		$	14,210		$	12,243
	Net loss attributable to common stockholders(1)	$	(5,159	)	$	(273	)	$	(18,092	)	$	(5,841	)
	Net loss per share attributable to common stockholders basic and diluted(2)	$	(0.67	)	$	(0.04	)	$	(0.37	)	$	(0.12	)
	Weighted average common shares outstanding basic and diluted(3)(4)	7,729,218			7,760,494			49,115,766			49,755,820
		Three Months Ended
	2012	March 31,			June 30,			September 30,			December 31,
	Revenue	$	17,272		$	25,206		$	30,174		$	32,538
	Gross profit	$	5,503		$	10,226		$	13,470		$	14,674
	Net loss	$	(9,127	)	$	(4,780	)	$	(1,675	)	$	(1,062	)
	Net loss per share — basic and diluted(2)	$	(1.25	)	$	(0.65	)	$	(0.22	)	$	(0.14	)
	Weighted average common shares outstanding basic and diluted(4)	7,318,320			7,389,173			7,541,832			7,683,193
	(1)              For the three months ended September 30, 2013, net loss attributable to common stockholders includes $15,849 Series F preferred stock deemed dividend related to the conversion of the Company’s Series F preferred stock on July 2, 2013.
	(2)              Basic and diluted net loss per share is computed independently for each of the quarters presented.  Therefore, the sum of all quarterly basic and diluted net loss per share information may not equal the annual basic and diluted net loss per share.
	(3)              For the three months ended September 30, 2013, basic and diluted weighted average common shares outstanding increased to approximately 49.1 million shares as a result of the Company’s IPO on July 2, 2013.
	(4)              Due to the Company’s net losses, all potentially dilutive securities are anti-dilutive and, therefore, basic and diluted weighted average common shares outstanding are equal for all periods presented.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Summary of Significant Accounting Policies	'
Basis of Presentation	'
	Basis of Presentation
	The Company’s consolidated financial statements are prepared in accordance with generally accepted accounting principles in the United States of America (“US GAAP”).
Basis of Consolidation	'
	Basis of Consolidation
	The consolidated financial statements include the accounts of Tremor Video, Inc. and its wholly-owned subsidiaries. All significant inter-company transactions and balances have been eliminated in consolidation.
	The operating results of Transpera have been included in the consolidated financial statements since the acquisition date of February 11, 2011.
	During November 2012, the Company ceased operations of Tremor Video GmbH. The consolidated operating results include Tremor Video GmbH operations through the date operations ceased.
Use of Estimates	'
	Use of Estimates
	The preparation of the consolidated financial statements in conformity with US GAAP requires management to make estimates, judgments and assumptions. The Company’s management believes that the estimates, judgments and assumptions used are reasonable based upon information available at the time they are made. These estimates, judgments and assumptions can affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company’s management evaluates estimates, including those related to fair values and useful lives of intangible assets, fair values of stock-based awards, income taxes, and contingent liabilities. Such estimates are based on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities.
Initial Public Offering	'
	Initial Public Offering
	On July 2, 2013, the Company closed its initial public offering (“IPO”) of common stock in which the Company issued and sold 7,500,000 shares of common stock.  Upon closing of the IPO, all of the Company’s outstanding mandatorily redeemable convertible preferred stock (“preferred stock”) automatically converted into 34,172,316 shares of common stock (which includes a one-time $15,849 non-cash preferred stock deemed dividend related to the issuance of 1,584,863 of additional shares of common stock in connection with the Series F preferred stock ratchet provision (refer to note 13))  and all of the Company’s outstanding Series II common stock automatically converted into 1,052,464 shares of common stock.  In addition, the outstanding warrants to purchase preferred stock automatically converted into warrants to purchase 142,534 shares of common stock, and the warrants to purchase preferred stock liability of $790, which includes a $313 adjustment for the change in fair value from January 1, 2013 through July 2, 2013, was reclassified to additional paid-in capital.
Concentrations of Credit Risk	'
	Concentrations of Credit Risk
	Financial instruments that subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable.  All of the Company’s cash and cash equivalents are held at financial institutions that management believes to be of high credit quality.  The Company’s cash and cash equivalents may exceed federally insured limits at times.  The Company has not experienced any losses on cash and cash equivalents to date.
	The Company determines collectability by performing ongoing credit evaluations and monitoring its customers’ accounts receivable balances. For new customers and their agents, which may be advertising agencies or other third parties, the Company performs a credit check with an independent credit agency and may check credit references to determine creditworthiness. The Company only recognizes revenue when collection is reasonably assured.
	For the years ended December 31, 2013, 2012 and 2011, there were no customers that accounted for more than 10% of revenue.  At December 31, 2013 and 2012, there were no customers that accounted for more than 10% of outstanding accounts receivables.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	The Company considers cash deposits and all highly liquid investments with a maturity of three months or less to be cash equivalents. The fair value of the Company’s cash and cash equivalents approximates their cost plus accrued interest because of the short-term nature of the instruments. The Company’s cash deposits are held at multiple high-credit-quality financial institutions. The Company’s cash deposits at these institutions often exceeded federally insured limits.
Short-Term Investments	'
	Short-Term Investments
	The Company accounts for short-term investments in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 320, “Investments—Debt and Equity Securities.” Management determines the appropriate classification of its investments in debt securities at the time of purchase and re-evaluates such determinations at each balance sheet date.
	The Company classifies its short-term investments in marketable securities as available-for-sale at the time of purchase and re-evaluates such classifications at each balance sheet date. All short-term investments are carried at fair value. Unrealized gains and losses associated with available-for-sale securities are recorded as a component of accumulated other comprehensive income within stockholders’ equity (deficit). Realized gains and losses, if any, are recorded in the consolidated statements of operations. If the Company intends to sell or if it is more likely than not that it will be required to sell an impaired security prior to recovery of its cost basis, then the full amount of impairment will be charged to earnings.
	At December 31, 2013 and 2012, the Company did not hold any short-term investments.
	At December 31, 2011, short-term investments represented investments in U.S. Government and agency securities, high quality corporate bonds and commercial paper with maturity dates in excess of 90 days but less than one year. All the Company’s short-term investments were held at a single high-credit-quality financial institution and exceeded federally insured limits.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	The Company utilizes fair value measurements when required. The carrying amounts of cash and cash equivalents, restricted cash, accounts receivable, other current assets, other long-term assets, accounts payable and accrued expenses, security deposits payable and outstanding balances on the Company’s credit facility and related accrued interest expense approximate fair value as of December 31, 2013 and 2012 due to the short-term nature of those instruments and for the outstanding balances on the credit facility, the interest rates the Company believes it could obtain for borrowings with similar terms. Refer to note 3 for a discussion of the determination of fair value for the reported amounts of its warrants to purchase preferred stock and contingent consideration on acquisition.
Restricted Cash	'
	Restricted Cash
	At December 31, 2013 and 2012, the Company had total restricted cash outstanding of $600 and $1,221, respectively, which were used to collateralize a standby letters of credit for office spaces in New York, New York and Boston, Massachusetts.  Pursuant to the terms of the standby letters of credit, $621 of the total restricted cash outstanding at December 31, 2012 matured during 2013 and such collateral is no longer restricted as of December 31, 2013.  The remaining total restricted cash of $600 outstanding as of December 31, 2013 matures in 2021 and solely relates to collateral for the standby letter of credit for office space in New York, New York.
Accounts Receivable, Net	'
	Accounts Receivable, Net
	The Company extends credit to customers and generally does not require any security or collateral.  Accounts receivable are recorded at the invoiced amount.  The Company carries its accounts receivable balances at net realizable value. Management evaluates the collectability of its accounts receivable balances on a periodic basis and determines whether to provide an allowance or if any accounts should be written down and charged to expense as a bad debt. The evaluation is based on a past history of collections, current credit conditions, the length of time the account is past due and a past history of write-downs. A receivable balance is considered past due if the Company has not received payments based on agreed-upon terms.
Property and Equipment, Net	'
	Property and Equipment, Net
	Property and equipment are stated at cost, less accumulated depreciation. Depreciation expense on property and equipment is calculated using the straight-line method over the following estimated useful lives:
	Furniture and fixtures	7 years
	Computer hardware	3 years
	Office equipment	3 years
	Computer software	3 years
	Leasehold improvements are amortized over the shorter of the remaining life of the lease or the life of the asset. The cost of additions, and expenditures that extend the useful lives of existing assets, are capitalized, while repairs and maintenance costs are charged to operations as incurred.
Impairment of Long-Lived Assets	'
	Impairment of Long-Lived Assets
	Property and equipment subject to amortization are reviewed for impairment in accordance with FASB ASC 360, “Accounting for the Impairment or Disposal of Long-Lived Assets,” whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to the future undiscounted cash flows expected to be generated by the assets. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. The Company has not identified any such impairment of its long-lived assets at December 31, 2013 and 2012, and therefore, for the years ended December 31, 2013 and 2012, no impairment losses have been recorded.
Goodwill and Intangible Assets, Net	'
	Goodwill and Intangible Assets, Net
	Primarily all of the Company’s goodwill and intangible assets originated with the acquisition of ScanScout, Transpera and the acquired assets of InPlay (refer to note 6). In connection with the Scanscout acquisition, the Company recorded goodwill totaling $27,998 and intangible assets totaling $31,900. In connection with the Transpera acquisition, the Company recorded goodwill totaling $971 and intangible assets totaling $2,550. In connection with the acquired assets of InPlay, the Company recorded goodwill totaling $750 and intangible assets totaling $1,200. On August 7, 2012 the Company purchased a domain name from a third party for $50, the Company determined that this intangible asset had an indefinite life. Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Goodwill is not amortized, but rather is subject to an impairment test.
	The Company assesses goodwill for impairment annually as of October 1, or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company adopted FASB Accounting Standards Update (“ASU”) 2011-08, “Testing Goodwill for Impairment,” which gives companies the option to qualitatively assess whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. If it is not more likely than not that the fair value of the reporting unit is less than its carrying value, no further assessment of that reporting unit’s goodwill is necessary.
	If it is more likely than not that the fair value of the reporting unit is less than its carrying value, then the goodwill must be tested using a two-step process based on prior accounting guidance, and if the carrying value of a reporting unit’s goodwill exceeds its implied fair value, an impairment loss equal to the excess is recorded.
	The Company has not identified any such impairment of its goodwill at December 31, 2013 and 2012, and therefore, for the years ended December 31, 2013 and 2012, no impairment losses have been recorded.
	Intangible assets that are not considered to have an indefinite useful life are amortized over their estimated useful lives on a straight-line method as follows:
	Technology	5 to 7 years
	Customer relationships	5 to 10 years
	Trademarks and trade names	5 to 7 years
	Non-competition agreements	1 year
	Intangible assets are reviewed for impairment whenever events or changes in circumstances such as, but not limited to, significant declines in revenue, earnings or cash flows or material adverse changes in the business climate indicate that the carrying amount of an asset may be impaired.  During October 2013, the Company performed an impairment test relating to customer relationships acquired in connection with the acquisition of InPlay in 2012 and, based on such test, concluded that it is impaired.  The Company recorded an impairment amount of $132 to reduce the carrying value of this intangible asset, which is included as part of amortization expense.  The Company has not identified any other impairment losses on the remaining intangible assets.
Deferred rent liability	'
	Deferred rent liability
	The Company recognizes and records rent expense related to its lease agreements, which includes scheduled rent increases, on a straight-line basis beginning on the commencement date over the life of the lease.  The Company also recognizes and records rent concessions, in the form of reduced rent payments, on a straight-line basis over the life of the lease agreement.  Differences between straight-line rent expense and actual rent payments are recorded as Deferred rent liability and presented as a current liability in the Consolidated Balance Sheets.
Revenue Recognition and Deferred Revenue	'
	Revenue Recognition and Deferred Revenue
	The Company generates revenue primarily from the delivery of in-stream video advertisements for brand advertisers and agencies through the Tremor Video Network.  The Company also generates revenue from selling licenses to advertisers, agencies and publishers.  Revenue is recognized when the related services are delivered based on the specific terms of the contract, which are commonly based on the number of impressions delivered or by the actions of the viewers.  The Company recognizes revenue when four basic criteria are met: (1) persuasive evidence exists of an arrangement with the client reflecting the terms and conditions under which the services will be provided; (2) services have been provided or delivery has occurred; (3) the fee is fixed or determinable; and (4) collection is reasonably assured.  Collectability is assessed based on a number of factors, including the creditworthiness of a client and transaction history.  Amounts billed or collected in excess of revenue recognized are included as deferred revenue.
	The Company recognizes revenue from the delivery of video ads in the period in which the video ads are delivered.  Specifically, revenue is recognized for video ad delivery through the Tremor Video Network upon (1) engagement by the consumer with a video ad for cost per engagement (“CPE”) priced ad campaigns; (2) delivery of impressions served for CPM-priced ad campaigns without demo guarantees; (3) delivery of each impression served to a target demographic for ad campaigns priced on a CPM-basis with a guaranteed demographic reach; (4) completion of a video ad by the consumer for cost per video completed (“CPVC”) priced ad campaigns; (5) positive shift in a consumer’s favorability towards a brand for cost per brand-shift (“CPS”) priced ad campaigns; (6) shift of a consumer’s intent away from a competing brand for cost per conquest (“CPQ”) priced ad campaigns; and (7) completion of a video ad by a consumer, which video ad is viewable for its duration, for cost per completed and viewable video (“CPV&C”) priced ad campaigns.
	In the normal course of business, the Company acts as an intermediary in executing transactions with third parties.  The determination of whether revenue should be reported on a gross or net basis is based on an assessment of whether the Company is acting as the principal or an agent in the Company’s transactions.  In determining whether the Company acts as the principal or an agent, the Company follows the accounting guidance for principal-agent considerations.  The determination of whether the Company is acting as a principal or an agent in a transaction involves judgment and is based on an evaluation of the terms of each arrangement.  While none of the factors individually are considered presumptive or determinative, because the Company is the primary obligor and is responsible for (1) identifying and contracting with third-party advertisers, (2) establishing the selling prices of the video ads sold, (3) performing all billing and collection activities, including retaining credit risk, and (4) bearing sole responsibility for fulfillment of the advertising even if the Company lacks a video advertising campaign to deliver to these video ad impressions, the Company acts as the principal in these arrangements and therefore reports revenue earned and costs incurred related to these transactions on a gross basis.
	The license fees for the Company’s licensed analytics solutions are based on the number of impressions being analyzed through these solutions.  The Company recognizes revenue with respect to these solutions on a cost per impression basis based on the number of impressions being analyzed in a given month.  Typically, the Company’s license terms are for one year periods.  In limited cases, the Company charges a minimum monthly fee.
	Deferred revenue arises as a result of contractual billings in excess of recognized revenue and differences between the timing of revenue recognition and receipt of cash from the Company’s clients.  As of December 31, 2013 and 2012  there were $271 and $210, respectively, of amounts either billed in excess of recognized revenue or for services for which cash payments were received in advance of the Company’s performance of the service under the arrangement and recorded as deferred revenue in the accompanying Consolidated Balance Sheets.
Cost of Revenue	'
	Cost of Revenue
	Cost of revenue primarily represents the video advertising inventory costs under the Company’s publisher contracts, third party hosting fees and third party serving fees incurred to deliver the video ads run through the Tremor Video Network.  Cost of revenue also includes costs of licenses from third party data providers utilized in the Company’s licensed analytics solution.  Substantially all of the Company’s cost of revenue is attributable to video advertising inventory costs under its publisher contracts.  Cost of revenue is recognized on a publisher-by-publisher basis at the same time that the associated advertising revenue is recognized.  Substantially all of the Company’s exclusive publisher contracts contain minimum percentage fill rates on qualified video ad requests, which effectively means that the Company must purchase this inventory even if the Company lacks a video advertising campaign to deliver to these video ad impressions.  The Company recognizes the difference between the contractually required fill rate and the number of video ads actually delivered on the publisher’s website, if any, as a cost of revenue as of the end of each applicable monthly period.  Historically, the impact of the difference between the contractually required fill rate and the number of ads delivered has not been material. Costs owed to publishers but not yet paid are recorded in the consolidated balance sheets as accounts payable and accrued expenses.
Technology and Development Expenses	'
	Technology and Development Expenses
	Technology and development costs primarily consist of salaries, incentive compensation, stock-based compensation and other personnel-related costs for development, network operations and engineering personnel. Additional expenses in this category include costs related to development, quality assurance and testing of new technology, maintenance and enhancement of the Company’s existing technology and infrastructure as well as consulting, travel and other related overhead. The Company engages third-party consulting firms for various technology and development efforts, such as documentation, quality assurance, and support. Due to the rapid development and changes in the Company’s business and underlying technology to date, the Company has expensed development costs in the same period that those costs were incurred.
Sales and Marketing Expenses	'
	Sales and Marketing Expenses
	Sales and marketing expenses primarily consist of salaries, incentive compensation, stock-based compensation and other personnel-related costs for marketing and creative employees and the advertiser focused, publisher focused and licensing solution focused sales and sales support employees. Additional expenses in this category include marketing programs, consulting, travel and other related overhead. These costs are expensed when incurred and are included in sales and marketing expenses. Advertising costs, which are comprised of print and internet advertising, were $833, $1,372 and $1,358 for the years ended December 31, 2013, 2012 and 2011, respectively.
Stock Based Compensation Expenses	'
	Stock-Based Compensation Expenses
	The Company accounts for stock-based compensation expense under FASB ASC 718, “Compensation—Stock Compensation,” which requires the measurement and recognition of stock-based compensation expense based on estimated fair values, for all share-based payment awards made to employees and FASB ASC 505-50, “Equity-Based Payments to Non-Employees,” which requires the measurement and recognition of stock-based compensation expense based on the estimated fair value of services or goods being received, for all share-based payment awards made to other service providers and non-employees.
	FASB ASC 718 requires companies to estimate the fair value of stock-based payment awards on the date of grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as an expense over the requisite service periods in the Company’s consolidated statements of operations.
	The Company recognizes compensation expenses for the value of its awards, which have graded vesting based on service conditions, using the straight-line method, over the requisite service period of each of the awards, net of estimated forfeitures.
	Calculating the fair value of the stock-based options requires the input of subjective assumptions, including the expected term of the stock-based awards and stock price volatility. The Company estimates the expected life of stock options granted based on the simplified method, which the Company believes, is representative of the actual characteristics of the awards. The Company estimates the volatility of the common stock on the date of grant based on the historic volatility of comparable companies in its industry. The Company selected the risk-free interest rate based on yields from United States Treasury zero-coupon issues with a term consistent with the expected life of the awards in effect at the time of grant. Estimated forfeitures are based on actual historical pre-vesting forfeitures. The Company has never declared or paid any cash dividends and has no plan to do so. Consequently, it used an expected dividend yield of zero.
	In the event of modification of the conditions on which stock-based compensation was granted, an additional expense is recognized for any modification that increases the total fair value of the share-based payment arrangement or is otherwise beneficial to the employee/other service provider or non-employee at the modification date.
	At December 31, 2013, accrued compensation, benefits and payroll taxes includes $1,614 of stock-based long-term incentive compensation expense related to the Company’s long-term sales incentive compensation plan.  Payments earned under the plan for the 2013 plan year will be made in stock-based awards to participants that remain employed with the Company through June 30, 2014.  If any participant in the Company’s long-term incentive compensation plan is not employed on June 30, 2014, such participant will forfeit any rights to receive payments under the plan.
Income Taxes	'
	Income Taxes
	Income taxes represents income taxes paid or payable (or received or receivable) for the current year and includes any changes in deferred taxes during the year.  Deferred tax assets and liabilities are recognized for future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.  The Company recognizes deferred tax assets and liabilities for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, as well as for operating loss and tax credit carry-forwards. The Company measures deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which the Company expects to recover or settle those temporary differences.  The Company recognizes the effect of a change in tax rates on deferred tax assets and liabilities in the results of operations in the period that includes the enactment date. Deferred income tax expense represents the change during the period in deferred tax assets and deferred tax liabilities.  The components of the deferred tax assets and liabilities are individually classified as current and non-current based on their characteristics.  The Company reduces the measurement of a deferred tax asset, if necessary, by a valuation allowance if it is more likely than not that the Company will not realize some or all of the deferred tax asset. As a result of the Company’s historical operating performance and the cumulative net losses incurred to date, the Company does not have sufficient objective evidence to support the recovery of the net deferred tax assets. Accordingly, the Company has established a valuation allowance against net deferred tax assets for financial reporting purposes because the Company believes it is more likely than not that these deferred tax assets will not be realized.
	The Company accounts for uncertain tax positions by recognizing the financial statement effects of a tax position only when, based upon technical merits, it is “more-likely-than-not” that the position will be sustained upon examination. Potential interest and penalties associated with unrecognized tax positions are recognized in income tax expense.
Net Loss Per Share Attributable to Common Stockholders	'
	Net Loss Per Share Attributable to Common Stockholders
	Basic net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period.
	Diluted net loss per share attributable to common stockholders is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period, adjusted to reflect potentially dilutive securities using the treasury stock method for warrants to purchase preferred stock, warrants to purchase common stock, preferred stock, stock option awards and restricted stock unit awards.  Due to the Company’s net loss attributable to common stockholders, (i) warrants to purchase preferred stock, (ii) warrants to purchase common stock, (iii) preferred stock, (iv) stock option awards, and (v) restricted stock unit awards were not included in the computation of diluted net loss per share attributable to common stockholders, as the effects would be anti-dilutive.  Accordingly, basic and diluted net loss per share attributable to common stockholders is equal for the periods presented.
Comprehensive Loss	'
	Comprehensive Loss
	Comprehensive loss consists of unrealized gains and losses on available-for-sale securities and currency translation adjustments. Total comprehensive loss and its components are presented in the accompanying Consolidated Statements of Comprehensive Loss.
Foreign Currency Translation Adjustments	'
	Foreign Currency Translation Adjustments
	The functional currency of the Company’s international subsidiaries is accounted for in their local currency. The Company translates the financial statements of these subsidiaries to U.S. dollars using period-end exchange rates for assets and liabilities, and average exchange rates for revenue and expenses. Translation gains and losses are recorded in accumulated other comprehensive income as a component of stockholders’ equity (deficit).  For the years ended December 31, 2013, 2012 and 2011, a cumulative translation adjustment of $(150), $(58) and $177, respectively, was recorded as a component of comprehensive loss in the consolidated financial statements. Realized and unrealized transaction gains and losses are included in the Consolidated Statements of Operations in the period in which they occur, except on inter-company balances considered to be long-term. Transaction gains and losses on inter-company balances which are considered to be long-term are recorded in accumulated other comprehensive income. Since 2012, the Company considered their inter-company balances to be long-term in nature. Net gain (loss) resulting from transactions denominated in foreign currencies was accounted for in the Company’s consolidated statements of operations and totaled $12, $28 and $(256) for the years ended December 31, 2013, 2012 and 2011.
Business Combinations	'
	Business Combinations
	In business combinations, the Company determines the acquisition purchase price as the sum of the consideration provided. The underlying principles require that the Company recognize separately from goodwill the assets acquired and the liabilities assumed, generally at their acquisition date fair values. Goodwill as of the acquisition date is measured as the excess of consideration transferred and the net of the acquisition date fair values of the assets acquired and the liabilities assumed. While the Company uses its best estimates and assumptions as a part of the purchase price allocation process to accurately value assets acquired and liabilities assumed at the acquisition date, the Company’s estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, the Company may record adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded in the consolidated statements of operations. The direct transaction costs associated with the business combination are expensed as incurred.
	When the Company issues stock-based awards to an acquired company’s selling stockholders, the Company evaluates whether the awards are contingent consideration or compensation for post-business combination services. The Company’s evaluation includes, among other things, whether the vesting of the stock-based awards is contingent on the continued employment of the selling stockholder beyond the acquisition date. If continued employment is required for vesting, the awards are treated as compensation for post-acquisition services and recognized as future compensation expense over the required service period.
Recently Issued Accounting Pronouncements	'
	Recently Issued Accounting Pronouncements
	FASB Accounting Standards Update No. 2013-02 — Comprehensive Income: Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income
	In February 2013, the FASB issued new authoritative guidance requiring new disclosures about reclassifications from accumulated other comprehensive income to net loss. This new guidance requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the financial statements where net loss is presented or in the notes thereto, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net loss but only if the amount reclassified is required under US GAAP to be reclassified to net loss in its entirety in the same reporting period.  For other amounts that are not required under US GAAP to be reclassified in their entirety to net loss, an entity is required to cross-reference to other disclosures required under US GAAP that provide additional detail about those amounts. The new guidance is effective prospectively for annual and interim periods beginning after December 15, 2012.  The Company adopted this guidance in its interim period beginning April 1, 2013. The adoption of this new guidance did not have a material impact on its consolidated financial statements and the required disclosures are provided in note 14.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Summary of Significant Accounting Policies	'
Schedule of estimated useful lives of property and equipment	'
	Furniture and fixtures	7 years
	Computer hardware	3 years
	Office equipment	3 years
	Computer software	3 years
Schedule of estimated useful lives of intangible assets that are not considered to have an indefinite useful life	'
	Technology	5 to 7 years
	Customer relationships	5 to 10 years
	Trademarks and trade names	5 to 7 years
	Non-competition agreements	1 year

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Schedule of the assets and liabilities measured at fair value on a recurring basis	'
		Balance at
		December 31,
		2012			Level 1			Level 2		Level 3
	Liabilities
	Warrants to purchase preferred stock(1)	$	1,103		$	—		$	—	$	1,103
	Total warrants to purchase preferred stock	$	1,103		$	—		$	—	$	1,103
	(1)         The Company used an option pricing model to determine the fair value of the warrants to purchase preferred stock.  Significant inputs included an estimate of the fair value of the Company’s preferred stock as of December 31, 2012, the remaining contractual life of the warrant, a risk-free rate of interest, and an estimate of the Company’s stock volatility using the volatilities of guideline peer companies.  In connection with the Company’s IPO, these warrants to purchase preferred stock were adjusted to fair value through July 2, 2013 and were subsequently reclassified to additional paid-in capital (refer to note 11).
Schedule of changes in the Company's Level 3 instruments measured at fair value on a recurring basis	'
		Warrants to Purchase Preferred Stock
		2013			2012
	Beginning balance at January 1,	$	1,103		$	1,127
	Mark-to-market income before reclassifications	(313		)	(24		)
	Reclassification to additional paid-in capital	(790		)	—
	Ending balance at December 31,	$	—		$	1,103
		Contingent
		Consideration on
		Acquisition(1)
		2012
	Beginning balance at January 1,	$	817
	Mark-to-market expense before settlement	46
	Settlement of contingent consideration	(863		)
	Ending balance at December 31,	$	—
	(1)         On February 11, 2011, the Company acquired all of the outstanding equity of Transpera. The purchase price included contingent consideration consisting of up to 169,131 shares of the Company’s common stock payable on the one year anniversary of the closing of the acquisition based on certain performance criteria being achieved. In arriving at the value of the contingent consideration, the Company used a valuation model based on future expectations combined with management’s judgment. In the then-absence of a public trading market, the Company exercised judgment and considered numerous objective and subjective factors to determine the fair value of the Company’s common stock.

Prepaid_Expenses_and_Other_Cur1

Prepaid Expenses and Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Prepaid Expenses and Other Current Assets	'
Schedule of prepaid expenses and other current assets	'
		December 31,
		2013		2012
	Prepaid expenses	$	1,321	$	790
	Prepaid insurance	383		8
	Prepaid taxes	208		155
	Total prepaid expenses and other current assets	$	1,912	$	953

Property_and_Equipment_Net_Tab

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2013
Property and Equipment, Net	'
Schedule of property and equipment	'
		December 31,
		2013			2012
	Cost:
	Computer hardware	$	3,908		$	2,885
	Leasehold improvements	1,422			849
	Furniture and fixtures	1,090			765
	Computer software	482			545
	Office equipment	104			28
		7,006			5,072
	Accumulated depreciation	(3,618		)	(3,077		)
	Total property and equipment, net of accumulated depreciation	$	3,388		$	1,995

Acquisitions_Tables

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2013
Transpera, Inc.	'
Acquisitions	'
Summary of the estimated fair values of the assets acquired and liabilities assumed	'
	Total purchase price	$	3,295
	Fair value of assets acquired and liabilities assumed:
	Tangible assets acquired:
	Cash	$	12
	Accounts receivable	723
	Other current assets	73
	Total tangible assets acquired	808
	Identified intangible assets acquired	2,550
	Current liabilities assumed	(1,034		)
	Total assets acquired in excess of liabilities assumed	2,324
	Goodwill	986
	Adjustment to Transpera goodwill	(15		)
	Total purchase price	$	3,295
InPlay	'
Acquisitions	'
Summary of the estimated fair values of the assets acquired and liabilities assumed	'
	Technology	$	900
	Customer relationships	200
	Trademarks and trade names	100
	Goodwill	750
	Total acquired assets	$	1,950

Goodwill_and_Intangible_Assets1

Goodwill and Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets, Net	'
Schedule of changes in the carrying amount of goodwill	'
	Balance as of January 1, 2012	$	28,984
	Adjustment of Transpera goodwill	(15		)
	Goodwill — InPlay	750
	Balance as of December 31, 2012 and 2013	$	29,719
Schedule of information regarding the Company's acquisition-related intangible assets, net	'
	As of December 31, 2013:
		Gross Carrying			Accumulated			Net Carrying
		Amount			Amortization			Amount
	Technology	$	24,500		$	(10,865	)	$	13,635
	Customer relationships(1)	8,900			(3,109		)	5,791
	Trademarks and trade names	1,650			(739		)	911
	Non-competition agreements	600			(600		)	—
	Domain name(2)	50			—			50
	Total acquisition-related intangible assets, net	$	35,700		$	(15,313	)	$	20,387
	As of December 31, 2012:
		Gross Carrying			Accumulated			Net Carrying
		Amount			Amortization			Amount
	Technology	$	24,500		$	(7,239	)	$	17,261
	Customer relationships	8,900			(1,988		)	6,912
	Trademarks and trade names	1,650			(488		)	1,162
	Non-competition agreements	600			(600		)	—
	Domain name(2)	50			—			50
	Total acquisition-related intangible assets, net	$	35,700		$	(10,315	)	$	25,385
	(1)         During October 2013, the Company performed an impairment test relating to customer relationships acquired in connection with the acquisition of InPlay in 2012 and, based on such test, concluded that it is impaired.  The Company recorded an impairment amount of $132 to reduce the carrying value of this intangible asset, which is included as part of amortization expense.  Other than the impairment loss above, there were no other impairment losses identified.
	(2)         This intangible asset is considered to have an indefinite useful life.
Schedule of estimated future amortization expenses of the acquisition-related intangible assets that are considered to have a definite life	'
	2014	$	4,836
	2015	4,836
	2016	4,420
	2017	3,956
	2018	780
	2019 and thereafter	1,509
		$	20,337

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes	'
Schedule of components of the Company's (loss) income before income taxes	'
		Year Ended
			December 31,
			2013			2012			2011
	Loss before income taxes:
	Domestic		$	(14,408	)	$	(13,871	)	$	(18,446	)
	Foreign		1,098			(2,493		)	(2,356		)
	Total loss before income taxes		$	(13,310	)	$	(16,364	)	$	(20,802	)
Schedule of Company's income tax expense, which consists of minimum US state and local taxes	'
			Year Ended
			December 31,
			2013			2012			2011
	Current:
	US Federal		$	—		$	—		$	—
	US State and local		199			280			223
	Foreign		7			—			—
	Total current income tax expense		206			280			223
	Deferred:
	US Federal		—			—			—
	US State and local		—			—			—
	Foreign		—			—			—
	Total deferred income tax expense		—			—			—
	Total income tax expense		$	206		$	280		$	223
Schedule of reconciliation between the U.S. federal statutory income tax rate to the effective tax rate, by applying such rates to loss before income taxes	'
			2013		2012		2011
	U.S. federal statutory income tax rate		(34.00	)%	(34.00	)%	(34.00	)%
	State income tax rate, net of federal tax benefit		6.69		1.11		0.71
	Change in income tax rates		(8.33	)	(4.49	)	(0.26	)
	Other		(0.45	)	(1.40	)	(5.88	)
	Stock-based compensation expense		3.85		2.99		2.32
	Change in deferred tax asset valuation		33.79		37.5		38.18
	Effective tax rate		1.55	%	1.71	%	1.07	%
Summary of significant components of the Company's deferred tax assets and liabilities	'
			December 31,
			2013			2012
	Deferred tax assets:
	Net operating losses and tax credits		$	37,023		$	36,168
	Capitalization of research and development and start-up costs		1,203			1,191
	Stock-based compensation expense		1,136			1,228
	Accrued expenses		737			—
	Depreciation and amortization expense		394			220
	Allowance for doubtful accounts		388			425
	Deferred rent		307			253
	Other		176			193
	Total deferred tax assets before valuation allowance		41,364			39,678
	Valuation allowance		(33,213		)	(29,671		)
	Total deferred tax assets, net of valuation allowance		8,151			10,007
	Deferred tax liabilities:
	Intangible assets		(8,126		)	(9,983		)
	Depreciation and amortization expense		(18		)	(17		)
	Other		(7		)	(7		)
	Total deferred tax liabilities		(8,151		)	(10,007		)
	Total deferred tax assets, net		$	—		$	—

Accounts_Payable_and_Accrued_E1

Accounts Payable and Accrued Expenses (Tables)	12 Months Ended
	Dec. 31, 2013
Accounts Payable and Accrued Expenses	'
Schedule of accounts payable and accrued expenses	'
		December 31,
		2013		2012
	Trade accounts payable	$	24,121	$	15,191
	Accrued compensation, benefits and payroll taxes(1)	5,612		3,627
	Accrued cost of sales	1,267		1,058
	Other payables and accrued expenses	1,312		1,199
	Total accounts payable and accrued expenses	$	32,312	$	21,075
	(1)         At December 31, 2013, accrued compensation, benefits and payroll taxes includes $1,614 of stock-based long-term incentive compensation expense related to the Company’s long-term sales incentive compensation plan.  Payments earned under the plan for the 2013 plan year will be made in stock-based awards to participants that remain employed with the Company through June 30, 2014.  If any participant in the Company’s long-term incentive compensation plan is not employed on June 30, 2014, such participant will forfeit any rights to receive payments under the plan.

Warrants_to_Purchase_Preferred1

Warrants to Purchase Preferred Stock and Common Stock (Tables)	12 Months Ended
	Dec. 31, 2013
Preferred stock	'
Warrants to Purchase Preferred Stock and Common Stock	'
Summary of the Company's outstanding warrants to purchase stock	'
								Fair Value
								as of
		Grant	Expiration		Exercise		Warrants	December 31,
		Date	Date		Price		Outstanding	2012
	Series A	June 7, 2007	June 7, 2017		$	1.27	35,520	$	299
	Series B-1	December 8, 2008	December 7, 2018		$	4.86	33,930	246
	Series C	February 8, 2010	February 8, 2020		$	3.79	31,659	245
	Series 1	December 8, 2010	June 30, 2017		$	2.46	31,130	256
	Series 3	December 8, 2010	February 6, 2015		$	5.75	8,694	57
	Totals						140,933	$	1,103
Common stock	'
Warrants to Purchase Preferred Stock and Common Stock	'
Summary of the Company's outstanding warrants to purchase stock	'
	The following table summarizes the Company’s outstanding warrants to purchase common stock as of December 31, 2013:
	Grant	Expiration	Exercise			Warrants
	Date	Date	Price			Outstanding
	December 8, 2010	June 30, 2017	$	2.46		31,130
	December 8, 2010	February 6, 2015	$	5.75		8,694
						39,824

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies	'
Schedule of future minimum payment commitments required under non-cancellable office space, co-location agreements and marketing services	'
	2014	$	1,777
	2015	1,332
	2016	1,225
	2017	1,108
	2018	972
	2019 and thereafter	2,281
		$	8,695

Preferred_Stock_Common_Stock_a1

Preferred Stock, Common Stock and Stockholders' Equity (Deficit) (Tables)	12 Months Ended
	Dec. 31, 2013
Preferred Stock, Common Stock and Stockholders' Equity (Deficit)	'
Schedule of preferred stock	'
	Series	Issued		Authorized	Issued and	Original		Liquidation		Carrying
					Outstanding	Issue		Preference		Value
						Price				as of
										December 31,
										2012
	Series A	September 2006		6,861,975	6,826,451	$	1.2669	$	8,648	$	8,402
	Series B	December 2007		3,500,732	3,500,729	$	3.1422	$	11,000	10,949
	Series B-1	May 2008		548,032	514,102	$	4.8629	$	2,500	2,479
	Series C	February and		5,308,216	5,276,554	$	3.7904	$	20,000	19,932
	Series D	April 2010		5,453,975	5,453,970	$	7.3341	$	40,000	39,931
	Series E	December 2010		238,000	236,108	$	8.0051	$	1,890	1,890
	Series 1	December 2010		979,333	947,711	$	2.4575	$	2,329	5,217
	Series 2	December 2010		1,822,000	1,821,455	$	4.1387	$	7,538	12,404
	Series 3	December 2010		937,333	928,054	$	5.7507	$	5,337	7,517
	Series 4	December 2010		3,093,333	3,092,932	$	2.7548	$	8,520	17,722
	Series F	September 2011		4,000,000	3,965,126	$	9.3314	$	37,000	36,023
				32,742,929	32,563,192					$	162,466
Schedule of dividends at annual rates	'
	Series	Dividend Rate
	Series A	$	0.1014
	Series B	$	0.2514
	Series B-1	$	0.3891
	Series C	$	0.3033
	Series D	$	0.5868
	Series E	$	0.64035
	Series 1	$	0.19665
	Series 2	$	0.33105
	Series 3	$	0.46005
	Series 4	$	0.22035
	Series F	$	0.74655
Schedule of the common stock	'
		Authorized		Outstanding
		as of		as of
	Series	December 31, 2012		December 31, 2012
	Common stock	50,000,000		6,674,905
	Series II	2,333,333		1,047,357
	Total common stock	52,333,333		7,722,262

Changes_in_Accumulated_Other_C1

Changes in Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2013
Changes in Accumulated Other Comprehensive Income	'
Schedule of components of accumulated other comprehensive income	'
					Unrealized
					Gain On
		Foreign			Short-term
		Currency			Investments
		Translation			Available
		Adjustment			For Sale			Total
	Beginning Balance at January 1, 2013	$	345		$	—		$	345
	Other comprehensive loss before reclassifications	(150		)	—			(150		)
	Amounts reclassified from accumulated other comprehensive income	—			—			—
	Ending Balance at December 31, 2013	$	195		$	—		$	195
					Unrealized
					Gain On
		Foreign			Short-term
		Currency			Investments
		Translation			Available
		Adjustment			For Sale			Total
	Beginning Balance at January 1, 2012	$	403		$	(7	)	$	396
	Other comprehensive loss before reclassifications	(58		)	—			(58		)
	Amounts reclassified from accumulated other comprehensive income	—			7			7
	Ending Balance at December 31, 2012	$	345		$	—		$	345

StockBased_Compensation_Expens1

Stock-Based Compensation Expense (Tables)	12 Months Ended
	Dec. 31, 2013
Stock-Based Compensation Expense	'
Schedule of the stock-based compensation expense	'
		2013			2012			2011
	Technology and development	$	549		$	422		$	507
	Sales and marketing	1,188			1,020			670
	General and administrative	1,667			1,477			1,706
	Total stock-based compensation expense	$	3,404		$	2,919		$	2,883
Summary of information of the Company's stock option awards outstanding and exercisable under all plans	'
	The following table presents summary information of the Company’s stock option awards outstanding and exercisable under all plans as of December 31, 2013:
		Options Outstanding							Options Exercisable
				Weighted										Weighted
				Average		Weighted					Weighted			Average
				Remaining		Average					Average			Remaining
				Contractual		Exercise					Exercise			Contractual
		Options		Life		Price			Options		Price			Life
	Range of Exercise Prices	Outstanding		(Years)		Per Share			Exercisable		Per Share			(Years)
	$0.20 to $0.26	364,347		3.19		$	0.21		364,347		$	0.21		3.19
	$0.44 to $0.53	64,112		5.73		0.49			64,112		0.49			5.73
	$0.63 to $0.84	370,100		4.51		0.8			370,100		0.8			4.51
	$1.11 to $1.49	1,158,444		6.69		1.26			1,154,366		1.26			6.69
	$2.66 to $4.28	3,106,814		7.62		4.22			1,950,787		4.2			7.09
	$5.01 to $5.90	1,576,893		8.49		5.31			598,352		5.15			8.26
	$8.15 to $9.64	662,051		9.53		8.44			5,594		8.15			9.42
		7,302,761		7.44		3.96			4,507,658		2.92			6.6
Summary of the Company's stock option award activity under all plans and related information, without regard for estimated forfeitures	'
				Weighted					Weighted					Weighted
				Average					Average					Average
				Exercise					Exercise					Exercise
				Price					Price					Price
		Exercisable		Per Share			Non-vested		Per Share			Outstanding		Per Share
	Stock option awards outstanding as of December 31, 2012	3,895,442		$	2.36		2,984,477		$	4.55		6,879,919		$	3.3
	Stock option awards granted	—		$	—		1,529,416		$	6.41		1,529,416		$	6.41
	Stock option awards forfeited	(103,007	)	$	4.14		(463,938	)	$	5.01		(566,945	)	$	4.73
	Stock option awards exercised	(539,629	)	$	1.7		—		$	—		(539,629	)	$	1.7
	Stock option awards vested	1,254,852		$	4.2		(1,254,852	)	$	4.2		—		$	—
	Stock option awards outstanding as of December 31, 2013	4,507,658		$	2.92		2,795,103		$	5.64		7,302,761		$	3.96
Schedule of assumptions used to estimate at the date of grant fair value for stock option awards granted under the stock option plan grant using the Black-Scholes option pricing model	'
		2013		2012		2011
	Volatility	47% - 54	%	56% - 57	%	54%-56	%
	Risk-free interest rate	0.86% - 1.88	%	0.60% - 1.17	%	1.36%-2.87	%
	Expected life (in years)	5.50-6.08		5.12-6.09		6.77
	Dividend yield	0	%	0	%	0	%
Summary of the Company's restricted stock unit award activity	'
				Weighted Average
		Restricted		Grant Date
		Stock Unit		Fair Value
		Awards		Per Share
	Restricted stock unit awards outstanding as of December 31, 2012	—		$	—
	Restricted stock unit awards granted	80,119		$	9.67
	Restricted stock unit awards forfeited	(10,000	)	$	10
	Restricted stock unit awards restriction lapses	—		$	—
	Restricted stock unit awards outstanding as of December 31, 2013	70,119		$	9.63
		Restricted
		Stock Unit
		Awards
	Aggregate grant date fair value of restricted stock unit awards outstanding as of December 31, 2013	$	675
	Number of restricted stock unit awards vested during the year ended December 31, 2013	—
	Number of restricted stock unit awards non-vested as of December 31, 2013	70,119

Net_Loss_Per_Share_Attributabl1

Net Loss Per Share Attributable to Common Stockholders (Tables)	12 Months Ended
	Dec. 31, 2013
Net Loss Per Share Attributable to Common Stockholders	'
Schedule of basic and diluted net loss per share attributable to common stockholders	'
		Year Ended
		December 31,
		2013			2012			2011
	Numerator:
	Net loss	$	(13,516	)	$	(16,644	)	$	(21,025	)
	Series F preferred stock deemed dividend	(15,849		)	—			—
	Net loss attributable to common stockholders	$	(29,365	)	$	(16,644	)	$	(21,025	)
	Denominator:
	Weighted average number of shares of common stock outstanding for basic and diluted net loss per share attributable to common stockholders	28,761,700			7,499,986			6,952,952
	Basic and diluted net loss per share attributable to common stockholders	$	(1.02	)	$	(2.22	)	$	(3.02	)
Schedule of securities excluded from the calculation of diluted net loss per share attributable to common stockholders	'
		Year Ended
		December 31,
		2013		2012		2011
	Warrants to purchase preferred stock	—		140,933		140,933
	Warrants to purchase common stock	39,824		—		—
	Preferred stock	—		32,563,192		32,563,192
	Stock option awards	7,302,761		6,879,919		6,727,056
	Restricted stock unit awards	70,119		—		—
	Total anti-dilutive securities	7,412,704		35,584,044		39,431,181

Supplemental_Disclosure_of_Cas1

Supplemental Disclosure of Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2013
Supplemental Disclosure of Cash Flow Information	'
Schedule of supplemental cash flow information	'
		Year Ended
		December 31,
		2013		2012		2011
	Supplemental disclosure of cash flow activities
	Cash paid for income taxes	$	308	$	249	$	310
	Cash paid for interest expense	$	127	$	234	$	323
	Supplemental disclosure of non-cash investing activities
	Common stock issued in connection with the acquisition of Transpera, Inc.	$	—	$	863	$	2,883
	Supplemental disclosure of non-cash financing activities
	Common stock issued in connection with the conversion of preferred stock	$	162,657	$	—	$	—
	Common stock issued in connection with the Series F preferred stock deemed dividend	$	15,849	$	—	$	—
	Reclassification of liability warrants to equity warrants	$	790	$	—	$	—

Quarterly_Results_of_Operation1

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Results of Operations (Unaudited)	'
Schedule of quarterly financial information	'
		Three Months Ended
	2013	March 31,			June 30,			September 30,			December 31,
	Revenue	$	24,765		$	35,465		$	35,267		$	36,299
	Gross profit	$	10,924		$	16,494		$	14,210		$	12,243
	Net loss attributable to common stockholders(1)	$	(5,159	)	$	(273	)	$	(18,092	)	$	(5,841	)
	Net loss per share attributable to common stockholders basic and diluted(2)	$	(0.67	)	$	(0.04	)	$	(0.37	)	$	(0.12	)
	Weighted average common shares outstanding basic and diluted(3)(4)	7,729,218			7,760,494			49,115,766			49,755,820
		Three Months Ended
	2012	March 31,			June 30,			September 30,			December 31,
	Revenue	$	17,272		$	25,206		$	30,174		$	32,538
	Gross profit	$	5,503		$	10,226		$	13,470		$	14,674
	Net loss	$	(9,127	)	$	(4,780	)	$	(1,675	)	$	(1,062	)
	Net loss per share — basic and diluted(2)	$	(1.25	)	$	(0.65	)	$	(0.22	)	$	(0.14	)
	Weighted average common shares outstanding basic and diluted(4)	7,318,320			7,389,173			7,541,832			7,683,193
	(1)              For the three months ended September 30, 2013, net loss attributable to common stockholders includes $15,849 Series F preferred stock deemed dividend related to the conversion of the Company’s Series F preferred stock on July 2, 2013.
	(2)              Basic and diluted net loss per share is computed independently for each of the quarters presented.  Therefore, the sum of all quarterly basic and diluted net loss per share information may not equal the annual basic and diluted net loss per share.
	(3)              For the three months ended September 30, 2013, basic and diluted weighted average common shares outstanding increased to approximately 49.1 million shares as a result of the Company’s IPO on July 2, 2013.
	(4)              Due to the Company’s net losses, all potentially dilutive securities are anti-dilutive and, therefore, basic and diluted weighted average common shares outstanding are equal for all periods presented.

Summary_of_Significant_Account3

Summary of Significant Accounting Policies (Details) (USD $)	0 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jul. 02, 2013	Dec. 31, 2013
Summary of Significant Accounting Policies	'	'
Common stock sold and issued in IPO (in shares)	7,500,000	'
Initial Public Offering	'	'
Number of warrants to purchase common stock, issued on conversion of warrants to purchase mandatorily redeemable convertible preferred stock (in shares)	142,534	'
Warrants for purchase of mandatorily redeemable convertible preferred stock liability reclassified to additional paid-in capital	'	$790
IPO - conversion of mandatorily redeemable convertible preferred stock	'	'
Initial Public Offering	'	'
Warrants for purchase of mandatorily redeemable convertible preferred stock liability reclassified to additional paid-in capital	790	'
Warrants for purchase of mandatorily redeemable convertible preferred stock liability reclassified to additional paid-in capital, portion due to change in fair value	313	'
IPO - conversion of mandatorily redeemable convertible preferred stock, Series F	'	'
Initial Public Offering	'	'
Common stock issued in connection with the one-time non-cash preferred stock deemed dividend	15,849	'
Common Stock | IPO - conversion of mandatorily redeemable convertible preferred stock	'	'
Initial Public Offering	'	'
Common stock issued against convertible stock (in shares)	34,172,316	'
Common Stock | IPO - conversion of mandatorily redeemable convertible preferred stock, Series F	'	'
Initial Public Offering	'	'
Common stock issued against convertible stock (in shares)	5,549,989	'
Shares of common stock issued on conversion related to the ratchet provision	1,584,863	'
Common Stock | IPO - conversion of Series II common stock	'	'
Initial Public Offering	'	'
Common stock issued against convertible stock (in shares)	1,052,464	'

Summary_of_Significant_Account4

Summary of Significant Accounting Policies (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Restricted Cash and Investments [Abstract]	'	'
Total restricted cash outstanding	$600	$1,221
Total restricted cash outstanding matured	621	'
Impairment of Long-Lived Assets	'	'
Impairment of long-lived assets	$0	$0
Furniture and fixtures	'	'
Property and Equipment, Net	'	'
Estimated useful lives	'7 years	'
Computer hardware	'	'
Property and Equipment, Net	'	'
Estimated useful lives	'3 years	'
Office equipment	'	'
Property and Equipment, Net	'	'
Estimated useful lives	'3 years	'
Computer software	'	'
Property and Equipment, Net	'	'
Estimated useful lives	'3 years	'

Summary_of_Significant_Account5

Summary of Significant Accounting Policies (Details 3) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

0 Months Ended

1 Months Ended

In Thousands, unless otherwise specified

Aug. 07, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 08, 2010

Feb. 11, 2011

Feb. 11, 2011

Jan. 17, 2012

Jan. 17, 2012

Jan. 17, 2012

Oct. 31, 2013

Jan. 17, 2012

Jan. 17, 2012

Maximum

Technology

Technology

Customer relationships

Customer relationships

Trademarks and trade names

Trademarks and trade names

Non-competition agreements

ScanScout

Transpera, Inc.

Transpera, Inc.

InPlay

InPlay

InPlay

InPlay

InPlay

InPlay

Minimum

Maximum

Minimum

Maximum

Minimum

Maximum

Maximum

Maximum

Technology

Customer relationships

Customer relationships

Trademarks and trade names

Goodwill and Intangible Assets, Net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

'

$29,719

$29,719

$28,984

'

'

'

'

'

'

'

'

$27,998

$971

'

$750

'

'

'

'

'

Intangible assets

'

'

'

'

'

'

'

'

'

'

'

'

31,900

2,550

'

1,200

'

900

'

200

100

Intangible asset with an indefinite life acquired

50

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill impairment loss

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Useful life of indefinite intangible assets

'

'

'

'

'

'5 years

'7 years

'5 years

'10 years

'5 years

'7 years

'1 year

'

'

'

'

'

'

'

'

'

Impairment amount recorded to reduce the carrying value of intangible asset

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

132

'

'

Revenue Recognition and Deferred Revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Term of license

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred revenue

'

271

210

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sales and Marketing Expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Advertising costs

'

833

1,372

1,358

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock Based Compensation Expenses

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Expected dividend yield (as a percent)

'

0.00%

0.00%

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock-based long-term incentive compensation expense

'

1,614

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Foreign Currency Translation Adjustments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cumulative translation adjustment

'

-150

-58

177

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net gain (loss) resulting from transactions denominated in foreign currencies

'

$12

$28

($256)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business Combinations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair value measurement period

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'1 year

'

'1 year

'

'

'

'

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Measurements	'
Warrants to purchase preferred stock	$1,103
Recurring | Total	'
Fair Value Measurements	'
Warrants to purchase preferred stock	1,103
Recurring | Level 3	'
Fair Value Measurements	'
Warrants to purchase preferred stock	$1,103

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)	0 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Feb. 11, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012
	Transpera, Inc.	Recurring	Recurring	Recurring
		Warrants to Purchase Preferred Stock	Warrants to Purchase Preferred Stock	Contingent Consideration on Acquisition
Changes in the company's Level 3 instruments measured at fair value	'	'	'	'
Balance at the beginning of the period	'	$1,103	$1,127	$817
Mark-to-market income before reclassifications	'	-313	-24	'
Mark-to-market expense before settlement	'	'	'	46
Reclassification to additional paid-in capital	'	-790	'	'
Settlement of contingent consideration	'	'	'	-863
Balance at the end of the period	'	'	$1,103	'
Shares issuable upon satisfaction of the performance criteria	169,131	'	'	'
Period in which shares are payable as contingent consideration	'1 year	'	'	'

Prepaid_Expenses_and_Other_Cur2

Prepaid Expenses and Other Current Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Prepaid Expenses and Other Current Assets	'	'
Prepaid expenses	$1,321	$790
Prepaid insurance	383	8
Prepaid taxes	208	155
Total prepaid expenses and other current assets	$1,912	$953

Property_and_Equipment_Net_Det

Property and Equipment, Net (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property and Equipment, Net	'	'	'
Cost	$7,006	$5,072	'
Accumulated depreciation	-3,618	-3,077	'
Total property and equipment, net of accumulated depreciation	3,388	1,995	'
Depreciation of property and equipment	1,312	1,104	956
Reduction to cost and accumulated depreciation of fully depreciated equipment and leasehold improvements no longer in use	771	443	'
Computer hardware	'	'	'
Property and Equipment, Net	'	'	'
Cost	3,908	2,885	'
Leasehold improvements	'	'	'
Property and Equipment, Net	'	'	'
Cost	1,422	849	'
Furniture and fixtures	'	'	'
Property and Equipment, Net	'	'	'
Cost	1,090	765	'
Computer software	'	'	'
Property and Equipment, Net	'	'	'
Cost	482	545	'
Office equipment	'	'	'
Property and Equipment, Net	'	'	'
Cost	$104	$28	'

Acquisitions_Details

Acquisitions (Details) (USD $)

12 Months Ended

12 Months Ended

0 Months Ended

In Thousands, except Share data, unless otherwise specified

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

Feb. 11, 2012

Feb. 11, 2011

Feb. 11, 2011

Jan. 17, 2012

Jan. 17, 2012

Jan. 17, 2012

Jan. 17, 2012

Jan. 17, 2012

Maximum

Transpera, Inc.

Transpera, Inc.

Transpera, Inc.

InPlay

InPlay

InPlay

InPlay

InPlay

Maximum

Maximum

Technology

Customer relationships

Trademarks and trade names

Acquisitions

'

'

'

'

'

'

'

'

'

'

'

'

Shares issuable upon satisfaction of the performance criteria

'

'

'

'

'

'

169,131

'

'

'

'

'

Period in which shares are payable as contingent consideration

'

'

'

'

'

'1 year

'

'

'

'

'

'

Fair value of contingent consideration

'

'

'

'

'

$723

'

'

'

'

'

'

Shares issued upon satisfaction of the performance criteria

'

'

'

'

169,131

'

'

'

'

'

'

'

Value of shares issued upon satisfaction of the performance criteria

'

'

'

'

863

'

'

'

'

'

'

'

Fair value measurement period

'

'

'

'1 year

'

'

'1 year

'

'1 year

'

'

'

Total purchase price

'

'

'

'

'

3,295

'

1,950

'

'

'

'

Tangible assets acquired:

'

'

'

'

'

'

'

'

'

'

'

'

Cash

'

'

'

'

'

12

'

'

'

'

'

'

Accounts receivable

'

'

'

'

'

723

'

'

'

'

'

'

Other current assets

'

'

'

'

'

73

'

'

'

'

'

'

Total tangible assets acquired

'

'

'

'

'

808

'

'

'

'

'

'

Identified intangible assets acquired

'

'

'

'

'

2,550

'

1,200

'

900

200

100

Current liabilities assumed

'

'

'

'

'

-1,034

'

'

'

'

'

'

Total assets acquired in excess of liabilities assumed

'

'

'

'

'

2,324

'

'

'

'

'

'

Goodwill

29,719

29,719

28,984

'

'

971

'

750

'

'

'

'

Goodwill

'

'

'

'

'

986

'

'

'

'

'

'

Adjustment of Transpera goodwill

-15

'

'

'

'

-15

'

'

'

'

'

'

Total purchase price

'

'

'

'

'

3,295

'

1,950

'

'

'

'

Value of common stock issued on the acquisition date to satisfy certain pre-acquisition liabilities

'

'

'

'

'

$300

'

'

'

'

'

'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets, Net (Details) (USD $)

12 Months Ended

1 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jan. 17, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Oct. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

InPlay

Domain name

Domain name

Technology

Technology

Customer relationships

Customer relationships

Customer relationships

Trademarks and trade names

Trademarks and trade names

Non-competition agreements

Non-competition agreements

InPlay

Changes in the carrying amount of goodwill

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of beginning of the period

$29,719

$28,984

'

$750

'

'

'

'

'

'

'

'

'

'

'

Adjustment of Transpera goodwill

'

-15

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill - InPlay

'

750

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance as of end of the period

29,719

29,719

28,984

750

'

'

'

'

'

'

'

'

'

'

'

Changes in the carrying amount of goodwill

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition-related intangible assets, net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Carrying Amount

35,700

35,700

'

'

50

50

24,500

24,500

8,900

8,900

'

1,650

1,650

600

600

Accumulated Amortization

-15,313

-10,315

'

'

'

'

-10,865

-7,239

-3,109

-1,988

'

-739

-488

-600

-600

Net Carrying Amount

20,387

25,385

'

'

50

50

13,635

17,261

5,791

6,912

'

911

1,162

'

'

Impairment recorded

'

'

'

'

'

'

'

'

'

'

132

'

'

'

'

Amortization expense

$4,998

$4,888

$5,132

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets, Net (Details 2) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Estimated future amortization expenses of the acquisition-related intangible assets that are considered to have a definite life	'
2014	$4,836
2015	4,836
2016	4,420
2017	3,956
2018	780
2019 and thereafter	1,509
Total	$20,337

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Loss before income taxes:	'	'	'
Domestic	($14,408)	($13,871)	($18,446)
Foreign	1,098	-2,493	-2,356
Loss before income taxes	-13,310	-16,364	-20,802
Current:	'	'	'
US State and local	199	280	223
Foreign	7	'	'
Total current income tax expense	206	280	223
Total income tax expense	206	280	223
Reconciliation between the U.S. federal statutory income tax rate to the effective tax rate, by applying such rates to loss before income taxes	'	'	'
U.S. federal statutory income tax rate (as a percent)	-34.00%	-34.00%	-34.00%
State income tax rate, net of federal tax benefit (as a percent)	6.69%	1.11%	0.71%
Change in income tax rates (as a percent)	-8.33%	-4.49%	-0.26%
Other (as a percent)	-0.45%	-1.40%	-5.88%
Stock-based compensation expense (as a percent)	3.85%	2.99%	2.32%
Change in deferred tax asset valuation (as a percent)	33.79%	37.50%	38.18%
Effective tax rate (as a percent)	1.55%	1.71%	1.07%
Deferred tax assets:	'	'	'
Net operating losses and tax credits	37,023	36,168	'
Capitalization of research and development and start-up costs	1,203	1,191	'
Stock-based compensation expense	1,136	1,228	'
Accrued expenses	737	'	'
Depreciation and amortization expense	394	220	'
Allowance for doubtful accounts	388	425	'
Deferred rent	307	253	'
Other	176	193	'
Total deferred tax assets before valuation allowance	41,364	39,678	'
Valuation allowance	-33,213	-29,671	'
Total deferred tax assets, net of valuation allowance	8,151	10,007	'
Deferred tax liabilities:	'	'	'
Intangible assets	-8,126	-9,983	'
Depreciation and amortization expense	-18	-17	'
Other	-7	-7	'
Total deferred tax liabilities	-8,151	-10,007	'
Increase in net valuation allowance	$3,542	'	'

Income_Taxes_Details_2

Income Taxes (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net operating loss carry-forwards	'	'	'
Interest expense recognized for uncertain tax positions	$0	$0	$0
Penalties recognized for uncertain tax positions	0	0	0
US federal and state	'	'	'
Net operating loss carry-forwards	'	'	'
Net operating loss carry-forwards	84,681	'	'
Net operating losses from excess tax deductions attributable to equity compensation	2,708	'	'
Foreign | German	'	'	'
Net operating loss carry-forwards	'	'	'
Net operating loss carry-forwards	6,787	'	'
Foreign | United Kingdom	'	'	'
Net operating loss carry-forwards	'	'	'
Net operating loss carry-forwards	4,082	'	'
US federal | Transpera	'	'	'
Net operating loss carry-forwards	'	'	'
Net operating loss carry-forwards available to offset future taxable income annually under Section 382	160	'	'
US federal | ScanScout	'	'	'
Net operating loss carry-forwards	'	'	'
Net operating loss carry-forwards available to offset future taxable income annually under Section 382	$2,220	'	'

Accounts_Payable_and_Accrued_E2

Accounts Payable and Accrued Expenses (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounts Payable and Accrued Expenses	'	'
Trade accounts payable	$24,121	$15,191
Accrued compensation, benefits and payroll taxes	5,612	3,627
Accrued cost of sales	1,267	1,058
Other payables and accrued expenses	1,312	1,199
Total accounts payable and accrued expenses	32,312	21,075
Stock-based long-term incentive compensation expense	$1,614	'

Credit_Facility_and_Accrued_In1

Credit Facility and Accrued Interest Expense (Details) (USD $)	12 Months Ended	0 Months Ended	1 Months Ended				12 Months Ended		1 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Jul. 30, 2013	Feb. 28, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Feb. 28, 2011	Feb. 28, 2011	Dec. 31, 2011
		Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility	Revolving working capital credit facility
							Minimum	Minimum	Prime rate	Prime rate
Credit facility and accrued interest expense	'	'	'	'	'	'	'	'	'	'
Maximum borrowing capacity	'	'	'	$7,000	'	$25,000	'	'	'	'
Ratio of current assets to current liabilities (excluding deferred revenue)	'	'	'	'	'	'	1.25	'	'	'
Fee for unused portion (as a percent)	'	'	0.20%	'	'	'	'	'	'	'
Amount of fee charged if average principal amount of borrowing per quarter is maintained above a specified amount	'	'	0	'	'	'	'	'	'	'
Average principal amount of borrowings per quarter for which no fee charged	'	'	'	'	'	'	'	10,000	'	'
Borrowing base as a percentage of eligible accounts receivable	'	'	'	'	'	80.00%	'	'	'	'
Repayments of principal borrowings and accrued interest expense	6,000	6,033	'	'	'	'	'	'	'	'
Amount outstanding	'	'	'	'	$6,000	'	'	'	'	'
Variable base rate	'	'	'	'	'	'	'	'	'prime rate	'prime rate
Interest rate (as a percent)	'	'	'	'	'	'	'	'	1.00%	0.50%

Warrants_to_Purchase_Preferred2

Warrants to Purchase Preferred Stock and Common Stock (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

Jul. 02, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Jul. 25, 2013

Jul. 25, 2013

Jul. 25, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Jul. 25, 2013

Dec. 31, 2013

Jul. 25, 2013

Jul. 25, 2013

Jul. 25, 2013

Dec. 31, 2013

Dec. 31, 2013

Warrants expiring June 7, 2017

Warrants expiring December 7, 2018

Warrants expiring February 8, 2020

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Preferred stock

Common stock

Common stock

Common stock

Common stock

Common stock

Common stock

Common stock

Series A

Series A

Series B-1

Series B-1

Series C

Series C

Series 1

Series 1

Series 3

Series 3

Warrants expiring June 7, 2017

Warrants expiring December 7, 2018

Warrants expiring February 8, 2020

Warrants expiring June 30, 2017

Warrants expiring February 6, 2015

Warrants to purchase preferred stock and common stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise Price (in dollars per share)

'

'

'

'

$1.27

$4.64

$3.79

'

'

$1.27

'

$4.86

'

$3.79

'

$2.46

'

$5.75

'

'

'

'

'

'

$2.46

$5.75

Warrants Outstanding (in shares)

'

'

'

'

'

'

'

140,933

'

35,520

'

33,930

'

31,659

'

31,130

'

8,694

'

'

39,824

'

'

'

31,130

8,694

Fair Value

'

'

'

'

'

'

'

'

$1,103

'

$299

'

$246

'

$245

'

$256

'

$57

'

'

'

'

'

'

'

Mark-to-market (income) expenses related to the fair value measurement of the warrants

'

($313)

($24)

$279

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of warrants to purchase common stock, issued on conversion of warrants to purchase mandatorily redeemable convertible preferred stock (in shares)

142,534

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares of common stock issued on exercise of warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30,250

16,210

17,607

'

'

Number of shares of common stock tendered to the Company

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,270

19,321

14,052

'

'

Common stock issued on exercise of warrants

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

64,067

64,067

[1],[2],[3]

'

'

'

'

'

[1]

All share amounts have been restated to reflect a 1-for-1.5 reverse stock split, refer to note 13.

[2]

Common stock included two series of common stock, refer to note 13.

[3]

All share amounts have been restated to reflect the renaming of the Company?s ?Series I common stock? to ?common stock?, refer to note 13.

Commitments_and_Contingencies_1

Commitments and Contingencies (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	item
Future minimum payment commitments required under non-cancellable office space, co-location agreements and marketing services	'	'	'
2014	$1,777	'	'
2015	1,332	'	'
2016	1,225	'	'
2017	1,108	'	'
2018	972	'	'
2019 and thereafter	2,281	'	'
Total	8,695	'	'
Rent expense	1,479	1,397	1,308
Letters of Credit	'	'	'
Outstanding letters of credit	600	1,221	'
Number of office spaces in New York, New York and Boston, Massachusetts	2	'	'
Legal Contingencies	'	'	'
Reserves established for losses which are reasonably possible	0	0	'
Reserves recorded	$0	'	'

Preferred_Stock_Common_Stock_a2

Preferred Stock, Common Stock and Stockholders' Equity (Deficit) (Details)	0 Months Ended	12 Months Ended
	Jun. 13, 2013	Dec. 31, 2013	Jul. 02, 2013	Dec. 31, 2012
Preferred Stock, Common Stock and Stockholders' Equity (Deficit)	'	'	'	'
Reverse stock split ratio	0.67	0.67	'	'
Common Stock	'	'	'	'
Common stock, shares authorized	'	250,000,000	250,000,000	52,333,333
Shares of preferred stock that may be issued	'	32,742,929	10,000,000	32,742,929

Preferred_Stock_Common_Stock_a3

Preferred Stock, Common Stock and Stockholders' Equity (Deficit) (Details 2) (USD $)	0 Months Ended	6 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Jul. 02, 2013	Jul. 02, 2013	Dec. 31, 2013	Dec. 31, 2012
	item	item		item
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Mandatorily redeemable convertible preferred stock, par value (in dollars per share)	'	'	'	$0.00
Authorized (in shares)	10,000,000	10,000,000	32,742,929	32,742,929
Issued (in shares)	'	'	32,563,192	32,563,192
Outstanding (in shares)	'	'	32,563,192	32,563,192
Carrying Value	'	'	'	$162,466
Common stock dividends declared or paid	'	'	0	'
Number of classes of common stock	2	1	'	2
Common stock, par value (in dollars per share)	'	'	$0.00	$0.00
Common stock, shares authorized	250,000,000	250,000,000	250,000,000	52,333,333
Common stock, shares outstanding	'	'	49,998,274	7,722,262
IPO - conversion of mandatorily redeemable convertible preferred stock, Series F	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Common stock issued in connection with the Series F preferred stock deemed dividend	15,849	'	'	'
Common stock | IPO - conversion of mandatorily redeemable convertible preferred stock, Series F	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
IPO price (in dollars per share)	10	$10	'	'
Common stock issued on automatic conversion of preferred stock (in shares)	5,549,989	'	'	'
Conversion of Stock, Shares Converted	1,584,863	'	'	'
Common stock	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Common stock, shares authorized	'	'	'	50,000,000
Common stock, shares outstanding	'	'	'	6,674,905
Number of votes entitled per share	'	'	1	'
Series II common stock	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Common stock, shares authorized	'	'	2,333,333	2,333,333
Common stock, shares outstanding	'	'	1,047,357	1,047,357
Number of votes entitled per share	'	1	1	'
Series A	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	6,861,975	6,861,975
Issued (in shares)	'	'	6,826,451	6,826,451
Outstanding (in shares)	'	'	6,826,451	6,826,451
Original Issue Price (in dollars per share)	'	'	$1.27	$1.27
Liquidation Preference	'	'	8,648	8,648
Carrying Value	'	'	'	8,402
Dividend Rate (in dollars per share)	'	'	$0.10	'
Series B	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	3,500,732	3,500,732
Issued (in shares)	'	'	3,500,729	3,500,729
Outstanding (in shares)	'	'	3,500,729	3,500,729
Original Issue Price (in dollars per share)	'	'	$3.14	$3.14
Liquidation Preference	'	'	11,000	11,000
Carrying Value	'	'	'	10,949
Dividend Rate (in dollars per share)	'	'	$0.25	'
Series B-1	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	548,032	548,032
Issued (in shares)	'	'	514,102	514,102
Outstanding (in shares)	'	'	514,102	514,102
Original Issue Price (in dollars per share)	'	'	$4.86	$4.86
Liquidation Preference	'	'	2,500	2,500
Carrying Value	'	'	'	2,479
Dividend Rate (in dollars per share)	'	'	$0.39	'
Series B-1 | Common stock | IPO - conversion of mandatorily redeemable convertible preferred stock, Series F	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Conversion ratio	'	'	1.04719	'
Series C	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	5,308,216	5,308,216
Issued (in shares)	'	'	5,276,554	5,276,554
Outstanding (in shares)	'	'	5,276,554	5,276,554
Original Issue Price (in dollars per share)	'	'	$3.79	$3.79
Liquidation Preference	'	'	20,000	20,000
Carrying Value	'	'	'	19,932
Dividend Rate (in dollars per share)	'	'	$0.30	'
Series D	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	5,453,975	5,453,975
Issued (in shares)	'	'	5,453,970	5,453,970
Outstanding (in shares)	'	'	5,453,970	5,453,970
Original Issue Price (in dollars per share)	'	'	$7.33	$7.33
Liquidation Preference	'	'	40,000	40,000
Carrying Value	'	'	'	39,931
Dividend Rate (in dollars per share)	'	'	$0.59	'
Series E	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	238,000	238,000
Issued (in shares)	'	'	236,108	236,108
Outstanding (in shares)	'	'	236,108	236,108
Original Issue Price (in dollars per share)	'	'	$8.01	$8.01
Liquidation Preference	'	'	1,890	1,890
Carrying Value	'	'	'	1,890
Dividend Rate (in dollars per share)	'	'	$0.64	'
Series 1	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	979,333	979,333
Issued (in shares)	'	'	947,711	947,711
Outstanding (in shares)	'	'	947,711	947,711
Original Issue Price (in dollars per share)	'	'	$2.46	$2.46
Liquidation Preference	'	'	2,329	2,329
Carrying Value	'	'	'	5,217
Dividend Rate (in dollars per share)	'	'	$0.20	'
Series 2	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	1,822,000	1,822,000
Issued (in shares)	'	'	1,821,455	1,821,455
Outstanding (in shares)	'	'	1,821,455	1,821,455
Original Issue Price (in dollars per share)	'	'	$4.14	$4.14
Liquidation Preference	'	'	7,538	7,538
Carrying Value	'	'	'	12,404
Dividend Rate (in dollars per share)	'	'	$0.33	'
Series 3	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	937,333	937,333
Issued (in shares)	'	'	928,054	928,054
Outstanding (in shares)	'	'	928,054	928,054
Original Issue Price (in dollars per share)	'	'	$5.75	$5.75
Liquidation Preference	'	'	5,337	5,337
Carrying Value	'	'	'	7,517
Dividend Rate (in dollars per share)	'	'	$0.46	'
Series 4	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	3,093,333	3,093,333
Issued (in shares)	'	'	3,092,932	3,092,932
Outstanding (in shares)	'	'	3,092,932	3,092,932
Original Issue Price (in dollars per share)	'	'	$2.75	$2.75
Liquidation Preference	'	'	8,520	8,520
Carrying Value	'	'	'	17,722
Dividend Rate (in dollars per share)	'	'	$0.22	'
Series F	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Authorized (in shares)	'	'	4,000,000	4,000,000
Issued (in shares)	'	'	3,965,126	3,965,126
Outstanding (in shares)	'	'	3,965,126	3,965,126
Original Issue Price (in dollars per share)	'	'	$9.33	$9.33
Liquidation Preference	'	'	37,000	37,000
Carrying Value	'	'	'	$36,023
Dividend Rate (in dollars per share)	'	'	$0.75	'
Conversion ratio	1.3997	1.3997	'	'
Adjusted conversion price	6.6667	$6.67	'	'
Initial conversion ratio	'	'	1	'
Maximum initial public offering (IPO) price for the ratchet provision (in dollars per share)	'	'	$14.00	'
Preferred stock excluding Series B-1 | IPO - conversion of mandatorily redeemable convertible preferred stock, Series F	'	'	'	'
Mandatorily Redeemable Convertible Preferred Stock	'	'	'	'
Conversion ratio	'	'	1	'

Changes_in_Accumulated_Other_C2

Changes in Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Changes in accumulated other comprehensive Income	'	'
Balance at the beginning of the period	$345	$396
Other comprehensive loss before reclassifications	-150	-58
Amounts reclassified from accumulated other comprehensive income	'	7
Balance at the end of the period	195	345
Foreign Currency Translation Adjustment	'	'
Changes in accumulated other comprehensive Income	'	'
Balance at the beginning of the period	345	403
Other comprehensive loss before reclassifications	-150	-58
Balance at the end of the period	195	345
Unrealized Gain On Short-term Investments Available For Sale	'	'
Changes in accumulated other comprehensive Income	'	'
Balance at the beginning of the period	'	-7
Amounts reclassified from accumulated other comprehensive income	'	$7

StockBased_Compensation_Expens2

Stock-Based Compensation Expense (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-Based Compensation Expense	'	'	'
Stock-based compensation expense	$3,404	$2,919	$2,883
Technology and development	'	'	'
Stock-Based Compensation Expense	'	'	'
Stock-based compensation expense	549	422	507
Sales and marketing	'	'	'
Stock-Based Compensation Expense	'	'	'
Stock-based compensation expense	1,188	1,020	670
General and administrative	'	'	'
Stock-Based Compensation Expense	'	'	'
Stock-based compensation expense	$1,667	$1,477	$1,706

StockBased_Compensation_Expens3

Stock-Based Compensation Expense (Details 2)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
	item	item	Maximum	2013 Plan	2013 Plan	2013 Plan
					RSU	Maximum
Stock-Based Incentive Plans	'	'	'	'	'	'
Number of stock-based incentive plans	5	4	'	'	'	'
Number of stock-based incentive plans assumed as part of acquisition	2	2	'	'	'	'
Vesting period	'	'	'4 years	'	'1 year	'4 years
Vesting percentage after one year	'	'	'	25.00%	100.00%	'
Period after which the first 25% of the grant vesting	'	'	'	'1 year	'	'
Expiration period	'	'	'10 years	'	'	'10 years
Number of shares of common stock available for issuance	'	'	'	308,769	'	'

StockBased_Compensation_Expens4

Stock-Based Compensation Expense (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013
Options Outstanding	'
Options Outstanding (in shares)	7,302,761
Weighted Average Remaining Contractual Life	'7 years 5 months 8 days
Weighted Average Exercise Price Per Share (in dollars per share)	$3.96
Options Exercisable	'
Options Exercisable (in shares)	4,507,658
Weighted Average Exercise Price Per Share (in dollars per share)	$2.92
Weighted Average Remaining Contractual Life	'6 years 7 months 6 days
$0.20 to $0.26	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$0.20
Range of Exercise Prices, high end of range (in dollars per share)	$0.26
Options Outstanding	'
Options Outstanding (in shares)	364,347
Weighted Average Remaining Contractual Life	'3 years 2 months 8 days
Weighted Average Exercise Price Per Share (in dollars per share)	$0.21
Options Exercisable	'
Options Exercisable (in shares)	364,347
Weighted Average Exercise Price Per Share (in dollars per share)	$0.21
Weighted Average Remaining Contractual Life	'3 years 2 months 8 days
$0.44 to $0.53	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$0.44
Range of Exercise Prices, high end of range (in dollars per share)	$0.53
Options Outstanding	'
Options Outstanding (in shares)	64,112
Weighted Average Remaining Contractual Life	'5 years 8 months 23 days
Weighted Average Exercise Price Per Share (in dollars per share)	$0.49
Options Exercisable	'
Options Exercisable (in shares)	64,112
Weighted Average Exercise Price Per Share (in dollars per share)	$0.49
Weighted Average Remaining Contractual Life	'5 years 8 months 23 days
$0.63 to $0.84	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$0.63
Range of Exercise Prices, high end of range (in dollars per share)	$0.84
Options Outstanding	'
Options Outstanding (in shares)	370,100
Weighted Average Remaining Contractual Life	'4 years 6 months 4 days
Weighted Average Exercise Price Per Share (in dollars per share)	$0.80
Options Exercisable	'
Options Exercisable (in shares)	370,100
Weighted Average Exercise Price Per Share (in dollars per share)	$0.80
Weighted Average Remaining Contractual Life	'4 years 6 months 4 days
$1.11 to $1.49	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$1.11
Range of Exercise Prices, high end of range (in dollars per share)	$1.49
Options Outstanding	'
Options Outstanding (in shares)	1,158,444
Weighted Average Remaining Contractual Life	'6 years 8 months 8 days
Weighted Average Exercise Price Per Share (in dollars per share)	$1.26
Options Exercisable	'
Options Exercisable (in shares)	1,154,366
Weighted Average Exercise Price Per Share (in dollars per share)	$1.26
Weighted Average Remaining Contractual Life	'6 years 8 months 8 days
$2.66 to $4.28	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$2.66
Range of Exercise Prices, high end of range (in dollars per share)	$4.28
Options Outstanding	'
Options Outstanding (in shares)	3,106,814
Weighted Average Remaining Contractual Life	'7 years 7 months 13 days
Weighted Average Exercise Price Per Share (in dollars per share)	$4.22
Options Exercisable	'
Options Exercisable (in shares)	1,950,787
Weighted Average Exercise Price Per Share (in dollars per share)	$4.20
Weighted Average Remaining Contractual Life	'7 years 1 month 2 days
$5.01 to $5.90	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$5.01
Range of Exercise Prices, high end of range (in dollars per share)	$5.90
Options Outstanding	'
Options Outstanding (in shares)	1,576,893
Weighted Average Remaining Contractual Life	'8 years 5 months 26 days
Weighted Average Exercise Price Per Share (in dollars per share)	$5.31
Options Exercisable	'
Options Exercisable (in shares)	598,352
Weighted Average Exercise Price Per Share (in dollars per share)	$5.15
Weighted Average Remaining Contractual Life	'8 years 3 months 4 days
$8.15 to $9.64	'
Stock option awards outstanding and exercisable under all plans	'
Range of Exercise Prices, low end of range (in dollars per share)	$8.15
Range of Exercise Prices, high end of range (in dollars per share)	$9.64
Options Outstanding	'
Options Outstanding (in shares)	662,051
Weighted Average Remaining Contractual Life	'9 years 6 months 11 days
Weighted Average Exercise Price Per Share (in dollars per share)	$8.44
Options Exercisable	'
Options Exercisable (in shares)	5,594
Weighted Average Exercise Price Per Share (in dollars per share)	$8.15
Weighted Average Remaining Contractual Life	'9 years 5 months 1 day

StockBased_Compensation_Expens5

Stock-Based Compensation Expense (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013
Exercisable	'
Stock option awards outstanding at the beginning of the period (in shares)	3,895,442
Stock option awards forfeited (in shares)	-103,007
Stock option awards exercised (in shares)	-539,629
Stock option awards vested (in shares)	1,254,852
Stock option awards outstanding at the end of the period (in shares)	4,507,658
Weighted average exercise price	'
Stock option awards outstanding at the beginning of the period (in dollars per share)	$2.36
Stock option awards forfeited (in dollars per share)	$4.14
Stock option awards exercised (in dollars per share)	$1.70
Stock option awards vested (in dollars per share)	$4.20
Stock option awards outstanding at the end of the period (in dollars per share)	$2.92
Non-vested	'
Stock option awards outstanding at the beginning of the period (in shares)	2,984,477
Stock option awards granted (in shares)	1,529,416
Stock option awards forfeited (in shares)	-463,938
Stock option awards vested (in shares)	-1,254,852
Stock option awards outstanding at the end of the period (in shares)	2,795,103
Weighted average exercise price	'
Stock option awards outstanding at the beginning of the period (in dollars per share)	$4.55
Stock option awards granted (in dollars per share)	$6.41
Stock option awards forfeited (in dollars per share)	$5.01
Stock option awards vested (in dollars per share)	$4.20
Stock option awards outstanding at the end of the period (in dollars per share)	$5.64
Outstanding	'
Stock option awards outstanding at the beginning of the period (in shares)	6,879,919
Stock option awards granted (in shares)	1,529,416
Stock option awards forfeited (in shares)	-566,945
Stock option awards exercised (in shares)	-539,629
Stock option awards outstanding at the end of the period (in shares)	7,302,761
Weighted average exercise price	'
Stock option awards outstanding at the beginning of the period (in dollars per share)	$3.30
Stock option awards granted (in dollars per share)	$6.41
Stock option awards forfeited (in dollars per share)	$4.73
Stock option awards exercised (in dollars per share)	$1.70
Stock option awards outstanding at the end of the period (in dollars per share)	$3.96

StockBased_Compensation_Expens6

Stock-Based Compensation Expense (Details 5) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-Based Incentive Plans	'	'	'
Weighted average grant date fair values of option awards granted (in dollars per share)	$3.23	$2.34	$2.46
Cliff period	'1 year	'	'
Total intrinsic values of options exercised	$3,525	$1,507	$1,573
Cash received from options exercised	912	433	'
Total fair value of shares vested	2,802	2,855	'
Unrecognized compensation cost related to non-vested share based compensation arrangements	$6,337	'	'
Weighted-average period over which unrecognized compensation cost is expected to be recognized	'2 years 9 months 14 days	'	'
Maximum	'	'	'
Stock-Based Incentive Plans	'	'	'
Vesting period	'4 years	'	'
Expiration period	'10 years	'	'

StockBased_Compensation_Expens7

Stock-Based Compensation Expense (Details 6)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Assumptions used to compute the fair value of all options and share awards granted	'	'	'
Volatility, minimum (as a percent)	47.00%	56.00%	54.00%
Volatility, maximum (as a percent)	54.00%	57.00%	56.00%
Risk-free interest rate, minimum (as a percent)	0.86%	0.60%	1.36%
Risk-free interest rate, maximum (as a percent)	1.88%	1.17%	2.87%
Expected life	'	'	'6 years 9 months 7 days
Dividend yield (as a percent)	0.00%	0.00%	0.00%
Minimum	'	'	'
Assumptions used to compute the fair value of all options and share awards granted	'	'	'
Expected life	'5 years 6 months	'5 years 1 month 13 days	'
Maximum	'	'	'
Assumptions used to compute the fair value of all options and share awards granted	'	'	'
Expected life	'6 years 29 days	'6 years 1 month 2 days	'

StockBased_Compensation_Expens8

Stock-Based Compensation Expense (Details 7) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013
Weighted Average Grant Date Fair Value Per Share	'
Weighted-average period over which unrecognized compensation cost is expected to be recognized	'2 years 9 months 14 days
RSU	'
Restricted Stock Unit Awards	'
Restricted stock unit awards granted (In shares)	80,119
Restricted stock unit awards forfeited (in shares)	-10,000
Restricted stock unit awards outstanding at the end of the period	70,119
Weighted Average Grant Date Fair Value Per Share	'
Restricted stock unit awards granted (in dollars per share)	9.67
Restricted stock unit awards forfeited (in dollars per share)	10
Restricted stock unit awards at the end of the period (in dollars per share)	9.63
Aggregate grant date fair value of restricted stock unit awards outstanding	675
Unrecognized compensation cost	390
Weighted-average period over which unrecognized compensation cost is expected to be recognized	'1 year

Net_Loss_Per_Share_Attributabl2

Net Loss Per Share Attributable to Common Stockholders (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator:	'	'	'	'	'	'	'	'	'	'	'
Net loss	'	'	'	'	($1,062)	($1,675)	($4,780)	($9,127)	($13,516)	($16,644)	($21,025)
Series F preferred stock deemed dividend	'	-15,849	'	'	'	'	'	'	-15,849	'	'
Net loss attributable to common stockholders	($5,841)	($18,092)	($273)	($5,159)	'	'	'	'	($29,365)	($16,644)	($21,025)
Denominator:	'	'	'	'	'	'	'	'	'	'	'
Weighted average number of shares of common stock outstanding for basic and diluted net loss per share attributable to common stockholders (in dollars)	49,755,820	49,115,766	7,760,494	7,729,218	7,683,193	7,541,832	7,389,173	7,318,320	28,761,700	7,499,986	6,952,952
Basic and diluted net loss per share attributable to common stockholders (in dollars per share)	($0.12)	($0.37)	($0.04)	($0.67)	($0.14)	($0.22)	($0.65)	($1.25)	($1.02)	($2.22)	($3.02)
Securities excluded from the calculation of weighted average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive securities excluded in the computation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	7,412,704	35,584,044	39,431,181
Warrants to purchase preferred stock	'	'	'	'	'	'	'	'	'	'	'
Securities excluded from the calculation of weighted average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive securities excluded in the computation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	'	140,933	140,933
Warrants to purchase common stock	'	'	'	'	'	'	'	'	'	'	'
Securities excluded from the calculation of weighted average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive securities excluded in the computation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	39,824	'	'
Preferred stock	'	'	'	'	'	'	'	'	'	'	'
Securities excluded from the calculation of weighted average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive securities excluded in the computation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	'	32,563,192	32,563,192
Stock option awards	'	'	'	'	'	'	'	'	'	'	'
Securities excluded from the calculation of weighted average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive securities excluded in the computation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	7,302,761	6,879,919	6,727,056
Restricted stock unit awards	'	'	'	'	'	'	'	'	'	'	'
Securities excluded from the calculation of weighted average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Anti-dilutive securities excluded in the computation of diluted earnings per share (in shares)	'	'	'	'	'	'	'	'	70,119	'	'

Supplemental_Disclosure_of_Cas2

Supplemental Disclosure of Cash Flow Information (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental disclosure of cash flows activities	'	'	'	'
Cash paid for income taxes	'	$308	$249	$310
Cash paid for interest expense	'	127	234	323
Supplemental disclosure of non-cash investing activities	'	'	'	'
Common stock issued in connection with the acquisition of Transpera, Inc.	'	'	863	2,883
Supplemental disclosure of non-cash financing activities	'	'	'	'
Common stock issued in connection with the conversion of preferred stock	'	162,657	'	'
Common stock issued in connection with the Series F preferred stock deemed dividend	15,849	15,849	'	'
Reclassification of liability warrants to equity warrants	'	$790	'	'

Segment_and_Geographic_Informa1

Segment and Geographic Information (Details)	12 Months Ended
	Dec. 31, 2013
	item
Segment and Geographic Information	'
Number of operating segments	1
Number of reportable segments	1

Quarterly_Results_of_Operation2

Quarterly Results of Operations (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Quarterly Results of Operations (Unaudited)	'	'	'	'	'	'	'	'	'	'	'
Revenue	$36,299	$35,267	$35,465	$24,765	$32,538	$30,174	$25,206	$17,272	$131,796	$105,190	$90,301
Gross profit	12,243	14,210	16,494	10,924	14,674	13,470	10,226	5,503	53,871	43,873	31,799
Net loss	'	'	'	'	-1,062	-1,675	-4,780	-9,127	-13,516	-16,644	-21,025
Net loss attributable to common stockholders	-5,841	-18,092	-273	-5,159	'	'	'	'	-29,365	-16,644	-21,025
Net loss per share attributable to common stockholders basic and diluted	($0.12)	($0.37)	($0.04)	($0.67)	($0.14)	($0.22)	($0.65)	($1.25)	($1.02)	($2.22)	($3.02)
Weighted average common shares outstanding basic and diluted	49,755,820	49,115,766	7,760,494	7,729,218	7,683,193	7,541,832	7,389,173	7,318,320	28,761,700	7,499,986	6,952,952
Series F preferred stock deemed dividend	'	$15,849	'	'	'	'	'	'	$15,849	'	'