Dealertrack 10-K 21 Feb 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	Feb. 01, 2014	Jun. 28, 2013
Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Entity Registrant Name	'Dealertrack Technologies, Inc	'	'
Entity Central Index Key	'0001333513	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Common Stock, Shares Outstanding	'	44,158,149	'
Entity Voluntary Filers	'No	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$1,522

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$122,373	$143,811
Marketable securities	10,589	34,031
Customer funds and customer funds receivable	25,901	16,076
Accounts receivable, net of allowances of $6,924 and $4,558 as of December 31, 2013 and December 31, 2012, respectively	48,212	43,679
Deferred tax assets, net	6,331	4,412
Prepaid expenses and other current assets	21,533	19,142
Total current assets	234,939	261,151
Marketable securities - long-term	'	4,428
Property and equipment, net	31,866	27,407
Software and website developments costs, net	62,513	46,182
Investments	119,318	122,808
Intangible assets, net	135,554	117,599
Goodwill	317,248	270,646
Deferred tax assets, net	40,421	43,611
Other assets - long-term	14,616	16,684
Total assets	956,475	910,516
Current liabilities	'	'
Accounts payable	15,013	18,834
Accrued compensation and benefits	20,645	15,148
Accrued liabilities - other	21,284	16,870
Customer funds payable	25,901	16,076
Deferred revenue	9,958	7,959
Deferred tax liabilities	4,278	3,031
Due to acquirees	2,000	11,124
Total current liabilities	99,079	89,042
Deferred tax liabilities	73,193	77,368
Deferred revenue	6,482	5,525
Due to acquirees	2,000	'
Senior convertible notes, net	170,317	162,279
Other liabilities	4,180	4,985
Total long-term liabilities	256,172	250,157
Total liabilities	355,251	339,199
Commitments and contingencies (Note 17)	'	'
Stockholders' equity	'	'
Preferred stock, $0.01 par value; 10,000,000 shares authorized and no shares issued and outstanding	'	'
Common stock, $0.01 par value: 175,000,000 shares authorized; 47,154,300 shares issued and 43,995,893 shares outstanding as of December 31, 2013; and 45,998,679 shares issued and 42,870,061 shares outstanding as of December 31, 2012	472	460
Treasury stock, at cost; 3,158,407 shares and 3,128,618 shares as of December 31, 2013 and December 31, 2012, respectively	-53,408	-52,398
Additional paid-in capital	571,550	541,948
Accumulated other comprehensive income	3,036	7,627
Retained earnings	79,574	73,680
Total stockholders' equity	601,224	571,317
Total liabilities and stockholders' equity	$956,475	$910,516

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Consolidated Balance Sheets [Abstract]	'	'
Accounts receivable, allowances for doubtful accounts	$6,924	$4,558
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	175,000,000	175,000,000
Common stock, shares issued	47,154,300	45,998,679
Common stock, shares outstanding	43,995,893	42,870,061
Treasury stock, shares	3,158,407	3,128,618

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue:	'	'	'
Net revenue	$481,534	$388,872	$353,294
Operating expenses:	'	'	'
Cost of revenue	277,580	220,695	197,152
Product development	15,201	11,732	13,012
Selling, general and administrative	177,699	142,518	128,892
Total operating expenses	470,480	374,945	339,056
Income from operations	11,054	13,927	14,238
Interest income	510	745	331
Interest expense	-13,262	-10,801	-927
Other income (expense), net	614	-5,528	1,769
Earnings from equity method investment, net	5,651	1,167	'
Gain on disposal of subsidiaries and sale of other assets	'	33,193	47,321
Income before benefit from (provision for) income taxes, net	4,567	32,703	62,732
Benefit from (provision for) income taxes, net	1,327	-12,249	2,403
Net income	$5,894	$20,454	$65,135
Basic net income per share	$0.14	$0.48	$1.58
Diluted net income per share	$0.13	$0.46	$1.53
Weighted average common stock outstanding (basic)	43,616	42,508	41,270
Weighted average common stock outstanding (diluted)	45,325	43,999	42,527

Consolidated_Statements_Of_Com

Consolidated Statements Of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements Of Comprehensive Income [Abstract]	'	'	'
Net income	$5,894	$20,454	$65,135
Other comprehensive income (loss), net of tax	'	'	'
Foreign currency translation adjustments	-4,443	1,269	-1,324
Net change in unrealized losses on securities	-148	-5	-171
Other comprehensive income (loss), net of tax	-4,591	1,264	-1,495
Total comprehensive income	$1,303	$21,718	$63,640

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	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011
				VINtek [Member]	Chrome Data Solutions [Member]	ClickMotive LP [Member]	eCarList [Member]	TrueCar [Member]
Operating Activities:	'	'	'	'	'	'	'	'
Net income	$5,894	$20,454	$65,135	'	'	'	'	'
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'	'	'	'	'	'
Depreciation and amortization	62,527	51,678	50,688	'	'	'	'	'
Deferred tax (benefit) provision	-11,339	751	-3,370	'	'	'	'	'
Stock-based compensation expense	14,391	13,592	11,612	'	'	'	'	'
Provision for doubtful accounts and sales credits	10,012	7,306	7,008	'	'	'	'	'
Earnings from equity method investment, net	-5,651	-1,167	'	'	'	'	'	'
Deferred compensation	184	150	200	'	'	'	'	'
Stock-based compensation windfall tax benefit	-6,140	-6,716	'	'	'	'	'	'
Gain on disposal of subsidiaries and sale of other assets	'	-33,193	-47,321	'	'	'	'	'
Realized gain on sale of securities	-362	-4	-409	'	'	'	'	'
Amortization of debt issuance costs and debt discount	9,482	7,566	333	'	'	'	'	'
Change in contingent consideration	-500	-900	-2,000	'	'	'	'	'
Change in fair value of warrant	'	6,310	-1,000	'	'	'	'	'
Amortization of deferred interest	1,045	927	31	'	'	'	'	'
Changes in operating assets and liabilities, net of effects of acquisitions:	'	'	'	'	'	'	'	'
Accounts receivable	-10,882	-13,321	-17,157	'	'	'	'	'
Prepaid expenses and other current assets	2,686	10,985	-3,983	'	'	'	'	'
Other assets - long-term	10,314	6,202	922	'	'	'	'	'
Accounts payable and accrued expenses	-1,274	1,075	-609	'	'	'	'	'
Deferred rent	171	397	30	'	'	'	'	'
Deferred revenue	1,889	-188	2,850	'	'	'	'	'
Other liabilities - long-term	-62	-1,181	1,966	'	'	'	'	'
Net cash provided by operating activities	82,385	70,723	64,926	'	'	'	'	'
Investing Activities:	'	'	'	'	'	'	'	'
Capital expenditures	-14,289	-9,951	-9,555	'	'	'	'	'
Capitalized software and website development costs	-34,116	-22,762	-20,086	'	'	'	'	'
Proceeds from sale of Chrome-branded asset	'	5,500	'	'	'	'	'	'
Purchases of marketable securities	-26,952	-70,175	'	'	'	'	'	'
Proceeds from sales and maturities of marketable securities	54,170	30,856	2,935	'	'	'	'	'
Cash contributed for equity method investment	'	-1,750	'	'	'	'	'	'
Return of equity method investment	714	'	'	'	'	'	'	'
Payment for cost method investment	'	'	-7,500	'	'	'	'	'
Payment for acquisition of businesses, net of acquired cash	-85,382	-129,882	-151,962	'	'	'	'	'
Net cash used in investing activities	-105,855	-198,164	-186,168	'	'	'	'	'
Financing Activities:	'	'	'	'	'	'	'	'
Principal payments on capital lease obligations and financing arrangements	-125	-538	-472	'	'	'	'	'
Proceeds from stock purchase plan and exercise of stock options	10,044	8,650	10,770	'	'	'	'	'
Purchases of treasury stock	-1,010	-831	-484	'	'	'	'	'
Stock-based compensation windfall tax benefit	6,140	6,716	'	'	'	'	'	'
Payment of a note payable	-11,439	'	'	'	'	'	'	'
Proceeds from issuance of senior convertible notes	'	200,000	'	'	'	'	'	'
Payments for debt issuance costs	'	-7,723	-1,908	'	'	'	'	'
Payments for convertible note hedges	'	-43,940	'	'	'	'	'	'
Proceeds from issuance of warrants	'	29,740	'	'	'	'	'	'
Net cash provided by financing activities	3,610	192,074	7,906	'	'	'	'	'
Net (decrease) increase in cash and cash equivalents	-19,860	64,633	-113,336	'	'	'	'	'
Effect of exchange rate changes on cash and cash equivalents	-1,578	469	-518	'	'	'	'	'
Cash and cash equivalents, beginning of period	143,811	78,709	192,563	'	'	'	'	'
Cash and cash equivalents, end of period	122,373	143,811	78,709	'	'	'	'	'
Cash paid for:	'	'	'	'	'	'	'	'
Income taxes	5,029	3,275	6,100	'	'	'	'	'
Interest	4,222	2,072	279	'	'	'	'	'
Non-cash investing and financing activities:	'	'	'	'	'	'	'	'
Accrued capitalized hardware, software and fixed assets	3,412	7,316	2,456	'	'	'	'	'
Assets acquired under capital leases and financing arrangements	223	774	39	'	'	'	'	'
Non-cash consideration issued	'	'	'	$4,000	$42,301	$250	$12,956	$86,100

Consolidated_Statements_Of_Sto

Consolidated Statements Of Stockholders' Equity (USD $)	Common Stock [Member]	Common Stock In Treasury [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income [Member]	Retained Earnings (Accumulated Deficit) [Member]	Total
In Thousands, except Share data
Balance at Dec. 31, 2010	$437	($51,083)	$463,614	$7,858	($11,909)	$408,917
Balance, shares at Dec. 31, 2010	43,748,237	3,075,195	'	'	'	'
Exercise of stock options, value	9	'	10,092	'	'	10,101
Exercise of stock options, shares	860,513	'	'	'	'	'
Directors deferred compensation stock units, value	0	'	200	'	'	200
Directors deferred compensation stock units, shares	9,384	'	'	'	'	'
Directors' deferred restricted stock unit vest, value	0	'	0	'	'	'
Directors' deferred restricted stock unit vest, shares	34,440	'	'	'	'	'
Issuances of common stock under ESPP, value	0	'	669	'	'	669
Issuances of common stock under ESPP, shares	33,127	'	'	'	'	'
Vesting of restricted stock units, value	3	'	-3	'	'	'
Vesting of restricted stock units, shares	272,189	'	'	'	'	'
Stock-based compensation expense	'	'	11,712	'	'	11,712
Treasury stock, value	'	-484	'	'	'	-484
Treasury stock, shares	'	23,998	'	'	'	'
Foreign currency translation adjustment	'	'	'	-1,324	'	-1,324
Net change in unrealized (losses) gains on securities	'	'	'	-171	'	-171
Net income	'	'	'	'	65,135	65,135
Balance at Dec. 31, 2011	450	-51,567	486,284	6,363	53,226	494,756
Balance, shares at Dec. 31, 2011	44,957,890	3,099,193	'	'	'	'
Exercise of stock options, value	7	'	7,822	'	'	7,829
Exercise of stock options, shares	655,223	'	'	'	'	'
Expired stock options	'	'	-43	'	'	-43
Directors deferred compensation stock units, value	0	'	150	'	'	150
Directors deferred compensation stock units, shares	5,138	'	'	'	'	'
Directors' deferred restricted stock unit vest, value	0	'	0	'	'	'
Directors' deferred restricted stock unit vest, shares	24,556	'	'	'	'	'
Issuances of common stock under ESPP, value	0	'	821	'	'	821
Issuances of common stock under ESPP, shares	29,661	'	'	'	'	'
Tax benefit from the exercise of share based awards	'	'	5,116	'	'	5,116
Vesting of restricted stock units, value	3	'	-3	'	'	'
Vesting of restricted stock units, shares	326,211	'	'	'	'	'
Stock-based compensation expense	'	'	13,592	'	'	13,592
Treasury stock, value	'	-831	'	'	'	-831
Treasury stock, shares	'	29,425	'	'	'	'
Foreign currency translation adjustment	'	'	'	1,269	'	1,269
Net change in unrealized (losses) gains on securities	'	'	'	-5	'	-5
Equity component of senior convertible notes, net of issuance costs	'	'	42,409	'	'	42,409
Convertible note hedges	'	'	-43,940	'	'	-43,940
Issuance of warrants	'	'	29,740	'	'	29,740
Net income	'	'	'	'	20,454	20,454
Balance at Dec. 31, 2012	460	-52,398	541,948	7,627	73,680	571,317
Balance, shares at Dec. 31, 2012	45,998,679	3,128,618	'	'	'	42,870,061
Exercise of stock options, value	6	'	9,155	'	'	9,161
Exercise of stock options, shares	623,852	'	'	'	'	624,000
Expired stock options	'	'	-19	'	'	-19
Directors deferred compensation stock units, value	0	'	184	'	'	184
Directors deferred compensation stock units, shares	4,800	'	'	'	'	'
Directors' deferred restricted stock unit vest, value	0	'	0	'	'	0
Directors' deferred restricted stock unit vest, shares	18,328	'	'	'	'	'
Issuances of common stock under ESPP, value	0	'	883	'	'	883
Issuances of common stock under ESPP, shares	24,759	'	'	'	'	'
Tax benefit from the exercise of share based awards	'	'	5,013	'	'	5,013
Vesting of restricted stock units, value	5	'	-5	'	'	'
Vesting of restricted stock units, shares	483,882	'	'	'	'	'
Stock-based compensation expense	'	'	14,391	'	'	14,391
Treasury stock, value	'	-1,010	'	'	'	-1,010
Treasury stock, shares	'	29,789	'	'	'	'
Foreign currency translation adjustment	'	'	'	-4,443	'	-4,443
Net change in unrealized (losses) gains on securities	'	'	'	-148	'	-148
Net income	'	'	'	'	5,894	5,894
Balance at Dec. 31, 2013	$472	($53,408)	$571,550	$3,036	$79,574	$601,224
Balance, shares at Dec. 31, 2013	47,154,300	3,158,407	'	'	'	43,995,893

Business_Description_And_Basis

Business Description And Basis Of Presentation	12 Months Ended
	Dec. 31, 2013
Business Description And Basis Of Presentation [Abstract]	'
Business Description And Basis Of Presentation	'
	1. Business Description and Basis of Presentation
	Business Description
	Dealertrack’s web-based software solutions and services enhance efficiency and profitability for all major segments of the automotive retail industry, including dealers, lenders, OEMs, third-party retailers, aftermarket providers and other service providers. Dealertrack operates the largest online credit application networks in the United States and Canada. We believe Dealertrack delivers the industry’s most comprehensive solution set for automotive retailers, including:
		·	Dealer Management solutions, which provide independent and franchised dealers with a powerful dealer management system (DMS) featuring easy-to-use tools and real-time data access to enhance their efficiency;
		·	Sales and F&I solutions, which allow dealers to streamline the in-store and online sales and financing processes as they structure deals from a single integrated platform;
		·	Inventory solutions, which deliver vehicle inventory management and transportation offerings to help dealers accelerate used-vehicle turn rates and assisting with the facilitation of vehicle delivery;
		·	Interactive solutions, which deliver digital marketing and website offerings to assist dealers in achieving higher lead conversion rates by helping optimize the maximum amount of shoppers to their websites;
		·	Registration & Titling solutions, which include online motor vehicle registration and cross-state vehicle registration services; and
		·	Collateral Management solutions, which include electronic lien and titling applications and service, title and collateral administration, as well as our digital contracting processing service.
	References in this Annual Report on Form 10-K to “Dealertrack,” the “Company,” “our” or “we” are to Dealertrack Technologies, Inc., a Delaware corporation, and/or its subsidiaries.
	Basis of Presentation
	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP).
	The accompanying consolidated financial statements include the accounts of Dealertrack Technologies, Inc. and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Summary Of Significant Accounting Policies	'
	2. Summary of Significant Accounting Policies
	Use of Estimates
	The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and the disclosure of contingent amounts in our consolidated financial statements and the accompanying notes. Actual results could differ from those estimates.
	On an on-going basis, we evaluate our estimates, including those related to revenue recognition, allowance for doubtful accounts, the fair value of financial assets, acquired intangible assets, goodwill, contingent consideration, and other assets and liabilities; the useful lives of intangible assets, property and equipment, capitalized software and website development costs; assumptions used to calculate stock-based compensation including volatility, expected life and forfeiture rate; and income taxes (including recoverability of deferred taxes), among others. We base our estimates on historical experience and on other various 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.
	Revenue Recognition
	We recognize revenue when the following fundamental criteria are met: (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or the services have been rendered, (iii) the fee is fixed or determinable, and (iv) collection of the resulting receivable is reasonably assured.
	Our revenue is presented net of a provision for sales credits, which is estimated based on historical results, and established in the period in which services are provided.
	Transaction Services Revenue
	Lender Transaction Services Revenue
	Lender transaction services revenue consists of transaction revenue earned from our lender customers for (1) each electronic receipt of credit application or contract data that dealers submit to them through the Dealertrack credit application network; (2) for each financing contract executed via our electronic contracting and digital contract processing solution; (3) for collateral management transactions; and (4) for any data services performed.
	Credit Application Transaction Revenue
	Our web-based credit application network facilitates the online credit application process by enabling dealers to transmit a consumer’s credit application information to one or more lenders. Credit application revenue consists of revenue earned on a per transaction basis and set-up fees charged to lenders for establishing connections. Transaction revenue is earned upon the electronic receipt of the credit application data and set-up fees are recognized ratably over the expected customer relationship period of four years.
	Electronic and Digital Contracting Transaction Revenue
	Our eContracting product allows dealers to obtain electronic signatures and provide contract information electronically to lender customers that participate in the solution. Our digital contract processing service receives paper-based contracts from dealers, digitizes the contract and submits them in electronic format to the respective lenders. Electronic and digital contracting revenue is recognized on a per transaction basis after services have been rendered.
	Collateral Management Services Transaction Revenue
	Our collateral management solution provides vehicle title and administration services for our customers, which are comprised mainly of lenders. The solution facilitates communication between our customers and the state department of motor vehicles by providing a solution for our customers to monitor title perfection and expedite the processing of liens with the state department of motor vehicles. We offer both paper-based and electronic-based title services depending on state requirements. Customer contracts for title services are principally comprised of two elements: (1) title perfection confirmation and (2) title administration.
	For paper-based titles, title perfection confirmation occurs upon the receipt of title and lien documentation supporting title perfection from the department of motor vehicles. For electronic-based titles, title perfection confirmation is achieved upon electronic acknowledgement that department of motor vehicles’ records reflect the customer as the lien holder.
	For paper-based titles, title administration services require us to physically hold, store and manually release the title. For electronic-based titles, title administration services require data storage. The release of the electronic title can be accomplished by the lien holder and does not require manual action by us.
	Deliverables for paper and electronic title management arrangements are separated into more than one unit of accounting when (i) the delivered element(s) have value to the customer on a stand-alone basis, (ii) delivery of the undelivered element(s) is probable and substantially in our control, and (iii) relative selling price is determined.
	Based on the above criteria, paper and electronic-based collateral management service revenue are separated into two units of accounting. We recognize a portion of the paper-based transaction fee upon receipt of title and lien documentation supporting title perfection from the department of motor vehicles. For electronic-based titles, we recognize a portion of the fee upon electronic acknowledgement that the department of motor vehicles’ records reflect the customer as the lien holder. For paper-based title services, amounts allocated to each unit of accounting are based upon vendor-specific objective evidence. For electronic-based title services, amounts allocated to each unit of accounting are based upon estimated selling price, which is based upon an adjustment to the selling price of our individual paper-based title services, when sold separately. The adjustment to the selling price is due to the lower selling price of electronic-based services compared to paper-based services.
	For customers in which we bill the entire transaction fee in advance, the title administration portion of the fee for both paper and electronic-based titles is deferred and recognized over the title administration period, which is estimated at approximately three years. This estimate is based upon a historical analysis of the average time period between the date of financing and the date of pay-off.
	Collateral management services revenue also includes revenue earned from converting a new customer’s title portfolio to our collateral management solution, which may include other ancillary services. Amounts earned from converting a new customer’s portfolio are recognized over the customer’s estimated portfolio loan life which varies depending on the customer. Amounts earned from other ancillary services are recognized on a per transaction basis after services have been rendered.
	Data Services Transaction Revenue
	Data service solutions are designed to help lenders analyze investment risk through detailed study of return rates and historic market trends. Whether a lender portfolio consists of leases, loans, or both, our data service products will analyze lenders automotive investments for maximum return. Data services revenue is recognized on a per record basis after services have been rendered.
	Dealer and Other Service Provider Transaction Services Revenue
	Registration Transaction Revenue
	Our registration and titling services solution provides various web-based and service-bureau based automotive vehicle registration services to customers. Registration and titling services revenue is recognized on a per transaction basis after services have been rendered.
	Aftermarket Transaction Revenue
	The Dealertrack Aftermarket Network streamlines and integrates the entire aftermarket sales and submission process. Aftermarket solution providers connected to the Dealertrack Aftermarket Network enable their dealers to have free access to real-time information needed to make aftermarket sales decisions. Aftermarket services revenue is recognized on a per transaction basis after services have been rendered.
	Credit Bureau Transaction Revenue
	Our credit bureau service provides our dealer customers the ability to access credit reports from several reporting agencies or resellers online. We offer these credit reports on both a reseller and agency basis. We recognize credit bureau revenue on a per transaction basis after services have been rendered. Credit bureau revenue is recognized from all but one credit bureau provider on a net basis due to the fact that we are not considered the primary obligor, and recognized on a gross basis from one provider as we have risk of loss and are considered the primary obligor in the transaction.
	Other Transaction Revenue
	Other transaction revenue includes revenue from appraisal solutions that provide dealers the ability to complete real-time vehicle appraisals as well as revenue from compliance solutions. This transaction revenue is recognized on a per transaction basis after services have been rendered.
	Subscription Services Revenue
	Subscription services revenue consists of revenue earned from primarily our dealers and other customers (typically on a monthly basis) for use of our subscription products and services. Our subscription services enable dealer customers to manage their dealership data and operations, compare various financing and leasing options and programs, sell insurance and other aftermarket products, analyze, merchandise, advertise, and transport their inventory and execute financing contracts electronically. Revenue is recognized from such contracts ratably over the contract period. Set-up fees, if applicable, are recognized ratably over the expected dealer customer relationship period, which is generally 36 to 60 months. For contracts that contain two or more subscription products and services, we recognize revenue in accordance with the above policy using relative selling price when the delivered products have stand-alone value.
	We record revenue for search engine optimization (SEO) and search engine marketing (SEM) based on the assessment of multiple factors, including whether we are the primary obligor to the arrangement and whether we maintain latitude in establishing price. In instances in which we are the primary obligor with discretion regarding price, we record the total amounts received from customers within subscription services revenue, and online search provider payments as cost of revenue. In instances in which we are paid by customers to recommend allocation of their budgeted spend, we record subscription services revenue for the net amounts paid to us by our customers. In this latter instance, our customers budgeted spend and amounts paid to the online search providers do not impact our consolidated results of operations.
	Other Revenue
	Other revenue consists of revenue primarily earned through forms programming, data conversion, hardware and equipment sales from our Dealer Management solution, shipping commissions earned from our digital contract business, and consulting and analytical revenue earned from ALG in periods prior to its disposal in 2011. Training fees are also included in other revenue. Other revenue is recognized when the service is rendered.
	Shipping Costs
	Shipping charges billed to customers are included in net revenue and the related shipping costs are included in cost of revenue.
	Cash and Cash Equivalents
	Cash and cash equivalents consist of cash and highly liquid investments purchased with original maturity of three months or less.
	Marketable Securities
	Marketable securities consist of U.S. treasury and agency securities, corporate bonds, municipal bonds and a tax-advantaged preferred security. All of our marketable securities are classified as available-for-sale securities and are recorded at fair value. Unrealized gains and losses, net of the related tax effect, are reported as a separate component of accumulated other comprehensive income until realized. Realized gains and losses are included as a component of other income, net, in the consolidated statement of operations and are calculated based on the specific identification method.
	Customer Funds
	Under contractual arrangements, our registration and titling services solution collects funds from our customers and remits such amounts to the various state departments of motor vehicle registries (registries). Customer funds receivable primarily represents transactions processed by our customers for which we have not collected our fees or the fees payable to the various registries. In addition, payments made to the various registries in advance of receipt from the customer, are recorded as customer funds receivable. Customer funds payable primarily includes transactions processed by our customers for which we have not remitted the fees to the various registries. Customer funds are maintained in separate bank accounts and are segregated from our operating cash.
	Translation of Non-U.S. Currencies
	We have maintained business operations in Canada since January 1, 2004. The translation of assets and liabilities denominated in foreign currency into U.S. dollars is made at the prevailing rate of exchange at the balance sheet date. Revenue, costs and expenses are translated at the average exchange rates during the period. Translation adjustments are reflected in accumulated other comprehensive income on our consolidated balance sheets, while gains and losses resulting from foreign currency transactions are included in our consolidated statements of operations. Amounts resulting from foreign currency transactions included in our statement of operations were not material for the years ended December 31, 2013,  2012 and 2011.
	Allowance for Doubtful Accounts
	We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. The amount of the allowance account is based on historical experience and our analysis of the accounts receivable balances outstanding. While credit losses have historically been within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same credit loss rates that we have in the past. If the financial condition of our customers were to deteriorate, resulting in their inability to make payments, additional allowances may be required which would result in an additional expense in the period that this determination was made.
	Property, Equipment and Depreciation
	Property and equipment are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposal, is charged or credited to income. Depreciation expense for the year ended December 31, 2013 included $0.2 million of accelerated depreciation of certain property and equipment due to the discontinuation of their use.
	Software and Website Development Costs and Amortization
	We capitalize costs of materials, consultants, payroll and payroll-related costs incurred by team members involved in developing internal use computer software. Costs incurred during the preliminary project and post-implementation stages are charged to expense. Software and website development costs are amortized on a straight-line basis over estimated useful lives. Capitalized costs are generally amortized over two years while our platform updates are amortized over five years and costs related to our SAP ERP implementation and salesforce.com implementation are amortized over seven years. We perform periodic reviews to ensure that unamortized software and website costs remain recoverable from future revenue. Capitalized software and website development costs, net, were $62.5 million and $46.2 million as of December 31, 2013 and 2012, respectively. Amortization expense totaled $19.1 million, $13.9 million and $12.3 million for the years ended December 31, 2013,  2012 and 2011, respectively. Amortization expense for the year ended December 31, 2012 included $1.0 million of accelerated depreciation of certain technology assets due to the discontinuation of those projects.
	Goodwill
	We record as goodwill the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired. Goodwill is tested annually for impairment as well as whenever events or circumstances change that would make it more likely than not that an impairment may have occurred. Goodwill is tested for impairment using a two-step approach. The first step tests for potential goodwill impairment by comparing the fair value of our one reporting unit to its carrying value. If the fair value of the reporting unit is less than its carrying value, the second step is to calculate and record an impairment loss to the extent that the implied fair value of the goodwill of the reporting unit is less than the carrying value of goodwill.
	Goodwill is required to be assessed at the operating segment or lower level. We determined that the components of our one operating segment have similar economic characteristics, nature of products, distribution, shared resources and type of customer such that the components should be aggregated into a single reporting unit for purposes of performing the impairment test for goodwill. We perform our annual impairment analysis as of the first day of the fourth quarter. The evaluation of impairment involves comparing the current estimated fair value of our reporting unit to the carrying value, including goodwill. We estimate the fair value of our reporting unit by primarily using a market capitalization approach, and also looking at the outlook for the business. The results of our most recent annual assessments performed on October 1, 2013 and 2012 did not indicate any impairment of our goodwill. In each year, the fair value of our reporting unit was significantly in excess of the carrying value, which includes goodwill. As of October 1, 2013, our market capitalization was approximately $1.9 billion compared to our book value, including goodwill, of approximately $602 million.
	Intangibles and Long-lived Assets
	We evaluate our long-lived assets, including property and equipment and finite-lived intangible assets for potential impairment on an individual asset basis or at the lowest level asset grouping for which cash flows can be separately identified. Intangible asset impairments are assessed whenever changes in circumstances could indicate that the carrying amounts of those productive assets exceed their projected undiscounted cash flows. When it is determined that impairment exists, the related asset group is written down to its estimated fair value. The determination of future cash flows and the estimated fair value of long-lived assets, involve significant estimates on the part of management. In order to estimate the fair value of a long-lived asset, we may engage a third party to assist with the valuation.
	Our process for assessing potential triggering events may include, but is not limited to, analysis of the following:
		·		any sustained decline in our stock price below book value;
		·		results of our goodwill impairment test;
		·		sales and operating trends affecting products and groupings;
	·		the impact on current and future operating results related to industry statistics including fluctuation of lending relationships between financing sources and automobile dealers, actual and projected annual vehicle sales, and the number of dealers within our network;
	·		the impact of acquisitions on the use of pre-existing long-lived assets;
	·		any losses of key acquired customer relationships; and
	·		changes to or obsolescence of acquired technology, data, and trademarks.
We also evaluate the remaining useful life of our long-lived assets on a periodic basis to determine whether events or circumstances warrant a revision to the remaining estimated amortization period.
Equity Method Accounting
We apply the equity method of accounting to investments in entities in which we own more than 20% of the equity of the entity and exercise significant influence.
Senior Convertible Notes
In accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 470-20, Debt with Conversion and Other Options, we separately account for the liability and equity components of our senior convertible notes. The estimated fair value of the liability component is computed based on an assessment of the fair value of a similar debt instrument that does not include a conversion feature. The equity component, which is recognized as a debt discount and recorded in additional paid-in capital, represents the difference between the gross proceeds from the issuance of the notes and the estimated fair value of the liability component at the date of issuance. The debt discount is amortized over the expected life of a similar liability without the equity component. The effective interest rate used to amortize the debt discount was based on our estimated non-convertible borrowing rate of a similar liability without an equity component as of the date the notes were issued.
Income Taxes
We account for income taxes in accordance with the provisions of FASB ASC Topic 740, Accounting for Income Taxes (ASC Topic 740), which requires deferred tax assets and liabilities to be recognized for the future tax consequences attributable to differences between the consolidated financial statement carrying amounts of assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be reversed. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized.
Uncertain tax positions are recorded in our consolidated balance sheet in accrued liabilities – other. Interest and penalties, if any, related to tax positions taken in our tax returns are recorded in interest expense and general and administrative expenses, respectively, in our consolidated statement of operations.
Advertising Expenses
We expense the cost of advertising and promoting our services as incurred. Such costs are included in selling, general and administrative expenses in the consolidated statements of operations and totaled $0.6 million, $0.5 million and $0.8 million for the years ended December 31, 2013,  2012 and 2011, respectively.
Concentration of Credit Risk
Our assets that are exposed to concentrations of credit risk consist primarily of cash, cash equivalents, short-term and long-term marketable securities and receivables from clients. We place our cash, cash equivalents, short-term and long-term marketable securities with financial institutions. We regularly evaluate the creditworthiness of the issuers in which we invest. Our trade receivables are spread over many customers. We maintain an allowance for uncollectible accounts receivable based on expected collectability and perform ongoing credit evaluations of customers’ financial condition.
Our revenue is generated from customers in the automotive retail industry. As of December 31, 2013 and 2012, no customer accounted for more than 10% of our accounts receivable. For the three years ended December 31, 2013, no customer accounted for more than 10% of our revenue.
Net Income Per Share
Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding, assuming dilution, during the period. The diluted earnings per share calculation assumes (i) all stock options which are in the money are exercised at the beginning of the period, (ii) if applicable, unvested awards that are considered to be contingently issuable shares because they contain either a performance or market condition will be included in diluted earnings per share if dilutive and if their conditions have (a) been satisfied at the reporting date or (b) would have been satisfied if the reporting date was the end of the contingency period, and (iii) if applicable, potential common shares which may be issued to satisfy the conversion spread value of our senior convertible notes.
The number of shares included in the denominator of diluted earnings per share relating to our senior convertible notes is calculated by dividing the conversion spread value by the average share price of our common stock during the period. The conversion spread value is the value that would be delivered to investors based on the terms of the notes, at the assumed conversion date.
The following table sets forth the computation of basic and diluted net income per share for the years ended December 31, 2013,  2012 and 2011 (in thousands, except per share amounts):
		December 31,
		2013				2012				2011
Numerator:
Net income		$	5,894			$	20,454			$	65,135
Denominator:
Weighted average common stock outstanding (basic)			43,616				42,508				41,270
Common equivalent shares from options to purchase common stock and restricted common stock units			1,709				1,491				1,257
Potential common shares related to convertible senior notes			—				—				—
Weighted average common stock outstanding (diluted)			45,325				43,999				42,527
Basic net income per share		$	0.14			$	0.48			$	1.58
Diluted net income per share		$	0.13			$	0.46			$	1.53
The following is a summary of the weighted average securities outstanding during the respective periods that have been excluded from the diluted net income per share calculation because the effect would have been antidilutive (in thousands):
		December 31,
		2013				2012				2011
Stock options			155				653				1,303
Restricted stock units			11				262				73
Performance stock units			8				—				79
Senior convertible notes			—				—				—
Total antidilutive awards			174				915				1,455
In regards to our senior convertible notes, it is our intent to settle the par value of the notes in cash, and we expect to have the liquidity to do so. As a result, there would be no potential impact to diluted earnings per share unless the average share price of our common stock for the respective periods exceeds the conversion price of $37.37, with additional dilution if the average share price exceeds the warrant strike price of $46.18.
For the years ended December 31, 2013 and 2012, the average share price of our common stock did not exceed the conversion price of $37.37; therefore, there was no impact to diluted earnings per share.  The average share price of our common stock did exceed the conversion price of $37.37 for the third and fourth quarter of 2013, in which the impact was 288 thousand and 546 thousand diluted shares, respectively.
For the years ended December 31, 2013 and 2012, the average share price of our common stock did not exceed the warrant strike price of $46.18; therefore, there was no additional impact to our diluted earnings per share calculations.
Stock-Based Compensation Expense and Assumptions
Stock-Based Compensation Expense
Stock-based compensation is measured at the grant date based on the fair value of the award, and recognized as an expense over the requisite service period, net of an estimated forfeiture rate. We currently have three types of stock-based compensation awards: stock options, restricted stock units and performance stock units. There are no longer any restricted common stock awards outstanding.
The following summarizes stock-based compensation expense recognized for the three years ended December 31, 2013,  2012 and 2011 (in thousands):
		Year Ended December 31,
		2013			2012			2011
Stock options		$	4,020		$	4,608		$	4,941
Restricted stock units			8,223			7,101			5,293
Performance stock units			2,148			1,883			1,057
Restricted common stock			—			—			321
Total stock-based compensation expense		$	14,391		$	13,592		$	11,612
The expense recorded to performance stock units includes expense related to the Revenue Performance Awards, the Adjusted Net Income (ANI) Performance Awards and the Total Shareholder Return (TSR) Performance Awards for the years ended December 31, 2013, 2012 and 2011 is as follows (in thousands):
		December 31,
		2013				2012				2011
TSR Performance Awards			1,013				1,051				605
Revenue Performance Awards			395				—				—
ANI Performance Awards			740				832				452
Total			2,148				1,883				1,057
The income tax benefit related to stock-based compensation expense for the years ended December 31, 2013,  2012 and 2011, was $5.2 million, $5.0 million, and $4.2 million, respectively.
A summary of the unamortized stock-based compensation expense and associated weighted average remaining amortization periods for stock options, restricted stock units and performance stock units is presented below:
						Unamortized				Weighted
						Stock-Based				Average
						Compensation				Amortization
						Expense				Period
						(in thousands)				(in years)
Stock options							7,155				2.40
Restricted stock units							15,936				2.29
Performance stock units							2,573				0.96
Stock-Based Compensation Assumptions and Vesting Requirements
Determining the appropriate fair value model and calculating the fair value of stock-based payment awards require the input of highly subjective assumptions, including the expected life, expected stock price volatility, and the number of awards that will be forfeited prior to the completion of the vesting requirements. We use Black-Scholes-Merton and binomial lattice-based valuation pricing models to value our stock-based awards.
Expected Life
Beginning in 2013, the expected life of any issued stock-based awards is based upon our historical exercise patterns and the period of time that the awards are expected to be outstanding. Previously, due to our limited public company history, the expected life was determined based upon the experience of similar entities whose shares are publicly-traded. The expected life for stock-based awards granted prior to December 31, 2007 was determined based on the “simplified” method, due to our limited public company history.
Expected Stock Price Volatility
The expected volatility of any stock-based awards we issue is based on our historical volatility. Previously, due to our limited public company history, the expected volatility for stock-based awards was determined using a time-weighted average of our historical volatility and the expected volatility of similar entities whose common shares are publicly-traded.
Risk-Free Interest Rate and Dividend Yield
The risk-free interest rates used for all stock-based awards granted were the actual U.S. Treasury zero-coupon rates for bonds matching our expected life of an option on the date of grant.
The expected dividend yield is not applicable to our stock-based award grants as we have not paid any dividends on our common stock. We do not anticipate declaring or paying cash dividends on our common stock, and we are currently limited in doing so pursuant to our credit facility.
Option Vesting Requirements
Options granted generally vest over a period of four years (three years for directors) from the vesting commencement date.  Options granted generally expire seven years from the date of grant, except for stock options granted prior to July 11, 2007, which expire ten years from the date of grant. Options, to the extent unvested, expire on the date of termination of employment, and to the extent vested, generally expire at the end of the three-month period following termination of employment, except in the case of executive officers, who under certain conditions have a twelve-month period following termination of employment to exercise.
Restricted Stock Unit Vesting Requirements
Restricted stock units granted are generally subject to an annual cliff vest over four years (one year for directors) from the vesting commencement date, with the exception of performance stock unit awards.
Performance Stock Unit Vesting Requirements
The performance stock unit awards for 2013 are earned upon the achievement of revenue and total shareholder return targets and the grantee’s continuous employment in active service until the final vest date, which is approximately three years from the grant date.  The performance stock unit awards for 2012 and 2011 are earned upon the achievement of adjusted net income and total shareholder return targets and the grantee’s continuous employment in active service until the final vest date, which is approximately three years from the grant date.
Long Term Incentive Plan (LTIP)
The LTIP awards were earned upon the achievement of earnings before interest, taxes, depreciation and amortization (EBITDA) and market-based targets for fiscal years 2007, 2008 and 2009 and the grantee’s continuous employment in active service until the final vest date, which was approximately three years from the grant date.
Fair Value Inputs
The fair value of each share-based award grant has been estimated on the date of grant using the Black-Scholes-Merton Option Pricing Model with the following assumptions:
		December 31,
		2013				2012				2011
Expected volatility			44	%			47.3 – 49.9	%			49.5	%
Expected dividend yield			0	%			0	%			0	%
Expected life (in years)			4.60				4.18				4.10
Risk-free interest rate			0.65 – 1.31	%			0.50 – 0.62	%			0.67 – 1.63	%
Weighted-average fair value of stock options granted		$	10.86			$	10.79			$	8.36
Weighted-average fair value of restricted stock units granted		$	30.00			$	28.03			$	20.30
The fair value of TSR Performance Awards is estimated on the date of grant using a binomial lattice-based valuation pricing model. The fair value of Revenue Performance Awards and ANI Performance Awards are estimated on the date of grant using a Black-Scholes-Merton valuation pricing model. The weighted-average assumptions were as follows:
		December 31,
		2013				2012				2011
Expected dividend yield			0	%			0	%			0	%
Risk-free interest rate			0.34	%			0.39	%			1.16	%
Weighted-average fair value of TSR Performance Awards granted		$	30.42			$	28.98			$	21.27
Weighted-average fair value of Revenue Performance Awards granted		$	28.87				N/A				N/A
Weighted-average fair value of ANI Performance Awards granted		$	N/A			$	27.99			$	19.48
Application of alternative assumptions could produce significantly different estimates of the fair value of stock-based compensation and consequently, the related amounts recognized in our consolidated statements of operations.
For further information on our stock-based compensation programs, please refer to Note 14.
Recent Accounting Pronouncements
In February 2013, the FASB issued Accounting Standards Update 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. We adopted this update in the first quarter of 2013. For the amounts reclassified out of accumulated other comprehensive income (AOCI),  please refer to Note 4.
In July 2013, the FASB issued Accounting Standards Update 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The guidance is effective for interim and annual periods beginning after December 15, 2013, with early adoption permitted. This standard will be effective for us beginning with the quarter ending March 31, 2014. We do not expect the adoption to have a material impact on our consolidated financial statements.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Fair Value Measurements	'
	3. Fair Value Measurements
	Fair value is defined as the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Inputs used to measure fair value are prioritized into a three-level fair value hierarchy. This hierarchy requires entities to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair values are as follows:
		·		Level 1 – Quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.
		·		Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly.
		·		Level 3 – Unobservable inputs for the asset or liability. The fair value hierarchy gives the lowest priority to Level 3 inputs.
	We have segregated all financial assets and liabilities that are measured at fair value on a recurring basis into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value at the measurement date in the table below. There were no transfers between levels of the fair value hierarchy during the periods presented below.
	The fair value of our investments in debt securities, reported by the fund managers, are verified by management through the utilization of third party pricing services and review of trades completed around the period end date. We consider market liquidity in determining the fair value for these securities. After completing our validation procedures, we did not adjust any fair value measurements provided by the fund managers. These investments in debt securities are included in Level 2 of the fair value hierarchy below.
	Financial assets and liabilities measured at fair value on a recurring basis include the following as of December 31, 2013 and 2012 (in thousands):
	As of December 31, 2013		Quoted Prices in Active Markets		Significant Other Observable Inputs		Significant Unobservable Inputs		31-Dec-13
			(Level 1)		(Level 2)		(Level 3)
	Cash equivalents (1)		$	13,692	$	—	$	—	$	13,692
	Marketable securities (2)			—		10,589		—		10,589
	Total		$	13,692	$	10,589	$	—	$	24,281
	Contingent consideration (3)			—		—		-500		-500
	Total		$	—	$	—	$	-500	$	-500
	As of December 31, 2012		Quoted Prices in Active Markets		Significant Other Observable Inputs		Significant Unobservable Inputs		31-Dec-12
			(Level 1)		(Level 2)		(Level 3)
	Cash equivalents (1)		$	63,774	$	—	$	—	$	63,774
	Marketable securities (2)			—		38,459		—		38,459
	Total		$	63,774	$	38,459	$	—	$	102,233
	Contingent consideration (3) (4)			—		—		-1,000		-1,000
	Total		$	—	$	—	$	-1,000	$	-1,000
	A reconciliation of the beginning and ending balances of contingent consideration, a Level 3 liability, as of December 31, 2012 and 2013 is as follows (in thousands):
	Balance as of December 31, 2011		$	-900
	Change in fair value of contingent consideration – eCarList (4)			900
	Record fair value of contingent consideration – ClickMotive (3)			-250
	Change in fair value of contingent consideration – ClickMotive (3)			-750
	Balance as of December 31, 2012		$	-1,000
	Change in fair value of contingent consideration – ClickMotive (3)			500
	Balance as of December 31, 2013		$	-500
		-1		Cash equivalents consist of highly liquid investments with original maturity dates of three months or less, for which we determine fair value through quoted market prices. As of December 31, 2013 and 2012, a majority of these investments were at least AA rated.
		-2		As of December 31, 2013, Level 2 marketable securities include corporate bonds, certificates of deposit, and non-U.S. government securities. As of December 31, 2012, Level 2 marketable securities include U.S. treasury and agency securities, corporate bonds, municipal bonds and an investment in a tax-advantaged preferred security. Fair market value was determined based on the quoted market prices of the underlying securities.
		-3		In connection with our October 1, 2012 acquisition of ClickMotive, a portion of the purchase price included contingent consideration that is payable in 2014 based upon the achievement of certain revenue performance targets in 2013.
				The fair value of the revenue contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The total contingent consideration was revalued each reporting period, with the resulting gains and losses recorded in the consolidated statements of operations. The fair value of the total contingent consideration as of the acquisition date was estimated at $0.3 million. We estimated the fair value of the total contingent consideration as of December 31, 2012 to be $1.0 million.  The increase included the impact of an adjustment to the performance targets made subsequent to the close of the acquisition. We estimated the fair value of the total contingent consideration as of December 31, 2013 to be $0.5 million. We recorded income of $0.5 million in the three months ended June 30, 2013 as a result of a decrease in revenue forecasts.
		-4		A portion of the purchase price of eCarList included contingent consideration that was to be payable in the first quarter of 2013 based upon the achievement of certain revenue targets in 2012. The fair value of the contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The contingent consideration was revalued each reporting period, until settled, with the resulting gains and losses recorded in the consolidated statements of operations. The revenue targets for 2012 were not met and therefore no contingent consideration payments were made. We recorded a fair value adjustment in the amount of $0.9 million of income for the year ended December 31, 2012 as a result of the decrease in the estimated settlement of the contingent consideration from the estimated amount as of December 31, 2011.
	Senior convertible notes
	Our senior convertible notes are shown in the accompanying consolidated balance sheets at their original issuance value, net of unamortized discount, and are not marked to market. The approximate aggregate fair value of our senior convertible notes as of December 31, 2013 and 2012 was $277.5 million and $211.5 million, respectively. The fair value of the senior convertible notes was estimated on the basis of quoted market prices of similar securities, which, due to limited trading activity, are considered Level 2 in the fair value hierarchy.

Marketable_Securities

Marketable Securities	12 Months Ended
	Dec. 31, 2013
Marketable Securities [Abstract]	'
Marketable Securities	'
	4. Marketable Securities
	Our investments in marketable securities are made within the guidelines of our investment policy, which has established guidelines relative to the diversification of our investments and their maturities, with the principle objective of capital preservation, maintaining liquidity, and avoiding concentrations. The following is a summary of available-for-sale securities as of December 31, 2013 and 2012 (in thousands):
	As of December 31, 2013	Aggregate		Gross		Gross		Aggregate
		Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
	Non-U.S. government securities		2,090		—		-32		2,058
	Certificates of deposit		3,011		—		-11		3,000
	Corporate debt securities		5,627		—		-96		5,531
	Total	$	10,728	$	—	$	-139	$	10,589
	As of December 31, 2012	Aggregate		Gross		Gross		Aggregate
		Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
	U.S. Treasury and agency securities	$	17,706	$	20	$	0	$	17,726
	Corporate debt securities		20,545		20		-2		20,563
	Municipal securities		170		—		0		170
	Total	$	38,421	$	40	$	-2	$	38,459
	As of December 31, 2013, all of our marketable securities had scheduled maturities of less than one year. A majority of our marketable securities were at least AA rated, and all securities were at least A rated.
	Investments in money market and similar short-term investments are recorded on our consolidated balance sheets as cash and cash equivalents.
	As of December 31, 2013 and 2012, we did not have any marketable securities that were in an unrealized loss position for greater than 12 months.
	Realized gains and losses are included as a component of other income, net, in our consolidated statement of operations. For the years ended December 31, 2013, 2012 and 2011, realized gains on available-for-sale securities of $0.4 million, $0.0 million, and $0.4 million, respectively, have been reclassified out of accumulated other comprehensive income (AOCI) to other income, net. For the years ended December 31, 2013, 2012 and 2011, realized losses on available-for-sale securities were not material.

Property_And_Equipment

Property And Equipment	12 Months Ended
	Dec. 31, 2013
Property And Equipment [Abstract]	'
Property And Equipment	'
	5. Property and Equipment
	Property and equipment are recorded at cost and consist of the following (dollars in thousands):
		Estimated
		Useful Life		December 31,
		(Years)		2013		2012
	Computer equipment		3 – 5	$	53,085	$	47,052
	Office equipment		5		4,946		5,245
	Furniture and fixtures		5		6,038		5,171
	Leasehold improvements		3 – 9		8,723		4,575
	Total property and equipment, gross				72,792		62,043
	Less: Accumulated depreciation and amortization				-40,926		-34,636
	Total property and equipment, net			$	31,866	$	27,407
	Depreciation and amortization expense for the years ended December 31, 2013,  2012 and 2011 was $11.9 million, $9.4 million and $8.7 million, respectively.

Intangible_Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2013
Intangible Assets And Goodwill [Abstract]	'
Intangible Assets	'
	6. Intangible Assets
	Intangible assets are recorded at estimated fair value and are amortized either ratably over their estimated useful lives, or based upon the underlying cash flows. The gross book value, accumulated amortization and amortization periods of the intangible assets were as follows (dollars in thousands):
		31-Dec-13				31-Dec-12
										Estimated
		Gross		Accumulated		Gross		Accumulated		Useful Life
		Book Value		Amortization		Book Value		Amortization		(Years)
	Customer relationships	$	114,193	$	-37,099	$	99,673	$	-43,229	12-Apr
	Technology		78,620		-35,793		69,620		-22,369	8-Apr
	Trade names		12,560		-4,087		9,100		-2,480	10-Mar
	Non-compete agreements		8,200		-5,671		7,540		-4,469	6-Mar
	State DMV relationships		7,790		-3,159		6,190		-1,977	8-Jun
	Total	$	221,363	$	-85,809	$	192,123	$	-74,524
	Amortization expense related to intangibles for the years ended December 31, 2013,  2012 and 2011 were $31.5 million, $28.3 million and $29.7 million.
	Amortization expense that will be charged to income for the subsequent five years and thereafter is as follows (in thousands):
	2014	$	32,056
	2015		30,969
	2016		22,394
	2017		15,936
	2018		11,401
	Thereafter		22,798
	Total	$	135,554

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2013
Intangible Assets And Goodwill [Abstract]	'
Goodwill	'
	7. Goodwill
	The changes in the carrying amount of goodwill for the years ended December 31, 2013 and 2012 is as follows (in thousands):
	Goodwill, gross, as of December 31, 2011	$	200,840
	Accumulated impairment losses as of December 31, 2011		—
	Goodwill, net, as of December 31, 2011	$	200,840
	Impact of change in Canadian dollar exchange rate		561
	Contribution of Chrome to joint venture		-7,874
	Acquisition of CentralDispatch		48,350
	Acquisition of ClickMotive		26,241
	Acquisition of Ford’s iCONNECT DMS		2,528
	Goodwill, gross, as of December 31, 2012	$	270,646
	Accumulated impairment losses as of December 31, 2012		—
	Goodwill, net, as of December 31, 2012	$	270,646
	Impact of change in Canadian dollar exchange rate		-1,850
	Acquisition of Casey & Casey		9,029
	Acquisition of Customer Focused Marketing		7,296
	Acquisition of VINtek		29,930
	Acquisition of certain assets of Nexteppe		2,197
	Goodwill, gross, as of December 31, 2013	$	317,248
	Accumulated impairment losses as of December 31, 2013		—
	Goodwill, net, as of December 31, 2013	$	317,248
	For further information on these acquisitions, see Note 9.  The result of our most recent annual assessment performed on October 1, 2013 did not indicate any impairment of goodwill.

Investments

Investments	12 Months Ended
	Dec. 31, 2013
Investments [Abstract]	'
Investments	'
	8. Investments
	Investments as of December 31, 2013 and 2012 consist of the following (in thousands):
		31-Dec-13		31-Dec-12
	Cost method investment	$	82,690	$	82,690
	Equity method investment		36,628		40,118
	Total investments	$	119,318	$	122,808
	Cost method investment
	In consideration for the sale of ALG in 2011, we received an equity interest in TrueCar with a value of $82.5 million and acquired a warrant to purchase 6.3 million additional shares of TrueCar common stock. In September 2012, we exercised our warrant in TrueCar at a value of $0.2 million based on an independent valuation approved by the board of directors of TrueCar. During the year ended December 31, 2012, the value decreased by $6.3 million, due to a decrease in the remaining expected term and estimated share price. The value of the shares received upon net exercise is now included within our cost method investment in TrueCar. For further information, see Note 19.
	TrueCar’s business simplifies and clarifies the car buying process for consumers by providing accurate market information which helps buyers make better, more informed decisions. TrueCar saves consumers time and money by providing price clarity and transparency, while delivering the benefits of higher close rates and vehicle sales to dealers. TrueCar reaches consumers via two channels – direct and indirect. The direct channel is a website that provides vehicle pricing transparency to consumers and dealers and the indirect channel is a private-label affinity buying program for major brands.
	We are not aware of factors requiring further assessment of the recoverability of the investment and we do not believe this investment was impaired as of December 31, 2013.
	In February 2014, we signed agreements to sell all of our shares in TrueCar for cash proceeds in excess of carrying value. See Note 21 for additional details.
	Equity method investment
	Commencing on January 1, 2012, we began recording in our consolidated statement of operations fifty percent (50%) of the net income of Chrome Data Solutions. Cash distributions, which are recorded as a reduction of our investment upon receipt, are based on a calculation considering results of operations and cash on hand. Distributions are expected to be received quarterly.
	Our earnings from the equity method investment are reduced by amortization expense relating to the basis difference between the book basis of the contributed assets and the fair value of the investment recorded. This basis difference, based upon a valuation of the fair value of contributed assets,  was $15.5 million and is being recorded over the lives of the underlying assets which gave rise to the basis difference, which range from 3 to 10 years. The unrecorded basis difference as of December 31, 2013 is $8.7 million, of which $2.2 million will be recorded in fiscal year 2014.
	The change in our equity method investment for the years ended December 31, 2013 and 2012 was as follows (in thousands):
		31-Dec-13		31-Dec-12
	Beginning balance	$	40,118	$	—
	Investment, January 1, 2012		—		44,050
	Share of net income		8,475		5,152
	Amortization of basis difference		-2,824		-3,985
	Payable to partner		100		—
	Cash distributions received		-9,241		-5,099
	Ending balance	$	36,628	$	40,118
	In connection with the contribution of the net assets of Chrome to Chrome Data Solutions on January 1, 2012, certain Chrome team members remained employed by Dealertrack through January 31, 2012. Their salary and related benefits were recorded in cost of revenue, product development and selling, general and administrative expenses. The reimbursement for these costs, in the amount of $0.8 million, was recorded as a reduction of selling, general and administrative expenses for the year ended December 31, 2012.
	In connection with a transitional services agreement with Chrome Data Solutions, during the years ended December 31, 2013 and 2012, we  incurred expenses of approximately $0.3  million and $0.3 million, respectively, for services received and earned income of approximately $0.2 million and $0.1 million,  respectively, for services performed. The amounts were generally recorded as selling, general and administrative expenses and revenue, respectively.
	We incur an annual data license fee payable to Chrome Data Solutions of $0.5 million, which is recorded as cost of revenue.
	The summarized audited financial information of Chrome Data Solutions is presented below (in thousands):
	Condensed Balance Sheet
		31-Dec-13		31-Dec-12
	Current assets	$	12,875	$	10,577
	Non-current assets		31,871		34,053
	Total assets	$	44,746	$	44,630
	Current liabilities	$	6,257	$	5,525
	Non-current liabilities		1,401		226
	Total liabilities	$	7,658	$	5,751
	Condensed Results of Operations
		Year Ended December 31,
		2013		2012
	Revenue	$	47,900	$	44,846
	Gross profit		33,853		30,809
	Net income		16,951		10,303

Business_Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Business Combinations	'
	9. Business Combinations
	Nexteppe Business Solutions, Inc. Acquisition
	On November 1, 2013, we acquired certain assets of Nexteppe Business Solutions, Inc. (Nexteppe) for approximately $3.6 million in cash, subject to purchase price adjustments subsequent to closing.  Nexteppe expands our dealer website offerings and is now part of our Interactive solutions.
	We expensed approximately $0.3 million of professional fees associated with the acquisition in the year ended December 31, 2013.
	This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their fair values at the date of acquisition.  The purchase price was allocated $1.3 million to customer relationships (with an estimated live of 5 years) and $2.2 million to goodwill.
	The allocated value of goodwill primarily relates to the anticipated synergies resulting from combining Nexteppe with our current products and processes.  Both the acquired goodwill and intangible assets are deductible for tax purposes.
	The results of Nexteppe were included in our consolidated statement of operations from the date of acquisition. Nexteppe revenue, which is primarily subscription-based, was $0.3 million from the date of acquisition through December 31, 2013. We are unable to provide Nexteppe earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
	VINtek, Inc. Acquisition
	On October 1, 2013, we acquired all the equity interests of VINtek, Inc. (Vintek) for $49.4 million in cash and a $4.0 million promissory note to be paid 18 months after closing. The purchase price is reflective of preliminary working capital adjustments. Vintek is a provider of automotive collateral management, electronic lien and title (ELT) and consumer automotive finance processing services. The company offers a number of industry-leading services and solutions, including electronic vehicle title, tag and tax processing services, and eSignature/eContracting solutions supporting the on-line closing of automotive loans.  Vintek is now part of our Collateral Management solutions.
	We expect to make payments to current team members and certain former employees of Vintek related to continued employment that may result in compensation expense of approximately $3.3 million to be recorded in our consolidated statement of operations through December 2014.
	We expensed approximately $1.5 million of professional fees associated with the acquisition in the year ended December 31, 2013.
	This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their fair values at the date of acquisition as follows (in thousands):
	Current assets	$	5,038
	Property and equipment		429
	Intangible assets		31,520
	Goodwill		29,930
	Total assets acquired		66,917
	Total liabilities assumed		-13,548
	Net assets acquired	$	53,369
	Included in current assets was approximately $1.7 million of cash acquired. The liabilities assumed includes a $9.8 million deferred tax liability that relates to the future amortization of certain acquired intangibles.
	The allocated value of goodwill primarily relates to the acquired workforce, as well as the anticipated synergies resulting from combining Vintek with our current products and processes.  Neither the acquired goodwill nor the intangible assets are deductible for tax purposes.
	The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Customer relationships	$	25,600	12
	Technology		4,400	5
	Non-compete agreement		920	5
	Trade names		600	5
	Total acquired identifiable intangible assets	$	31,520
	The $4.0 million promissory note bears interest at a rate of 1.83%. Half of the note is payable twelve months from the acquisition date, with the remainder payable eighteen months from the acquisition date.
	The results of Vintek were included in our consolidated statement of operations from the date of acquisition. Vintek revenue, which is transaction-based, was $4.0 million from the date of acquisition through December 31, 2013. We are unable to provide Vintek earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
	Customer Focused Marketing, Inc. Acquisition
	On October 1, 2013, we acquired substantially all of the assets of Customer Focused Marketing, Inc. (CFM) for $13.2 million in cash, reflective of preliminary working capital adjustments. CFM provides customer relationship management (CRM) and marketing services to automotive dealers across the United States. Its offerings include a number of services and technology tools that help automotive dealerships better manage database marketing and customer communications, including prospects, sales, and service. In addition, CFM has a mobile platform featuring innovative capabilities for the iPad, iPhone and Android-based devices, in addition to a desktop, browser-based version of the solution.  CFM is now part of our Sales and F&I solutions.
	We expect to make payments to seller and certain former employees of CFM related to continued employment that may result in compensation expense of approximately $2.5 million to be recorded in our consolidated statement of operations through March 2015.
	We expensed approximately $0.5 million of professional fees associated with the acquisition in the year ended December 31, 2013.
	This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their fair values at the date of acquisition as follows (in thousands):
	Current assets	$	990
	Intangible assets		4,960
	Goodwill		7,296
	Total assets acquired		13,246
	Total liabilities assumed		-48
	Net assets acquired	$	13,198
	The allocated value of goodwill primarily relates to the acquired workforce, as well as the anticipated synergies resulting from combining CFM with our current products and processes.  Both the acquired goodwill and intangible assets are deductible for tax purposes.
	The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Technology	$	2,700	6
	Customer relationships		1,170	8
	Trade names		960	5
	Non-compete agreement		130	5
	Total acquired identifiable intangible assets	$	4,960
	The results of CFM were included in our consolidated statement of operations from the date of acquisition. CFM revenue, which is subscription-based, was $1.7 million from the date of acquisition through December 31, 2013. We are unable to provide CFM earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
	Casey & Casey NPS Inc. Acquisition
	On April 1, 2013, we acquired substantially all the assets of Casey & Casey NPS, Inc. (doing business as “Auto Title Express”) (Casey & Casey) for $21.3 million in cash, reflective of final working capital adjustments.
	Casey & Casey is Louisiana’s first electronic general public license tag agency and provider of electronic vehicle registration, lien and title services, among other related services, in the state. This acquisition expands our transaction business and further strengthens our relationships with dealers and lenders. Casey & Casey is now part of our Registration & Titling solutions.
	We expensed approximately $0.4 million of professional fees associated with the acquisition in the year ended December 31, 2013.
	This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their fair values at the date of acquisition as follows (in thousands):
	Current assets	$	5,633
	Property and equipment		32
Non-current assets		15
Intangible assets		11,990
Goodwill		9,029
Total assets acquired		26,699
Total liabilities assumed		-5,387
Net assets acquired	$	21,312
The allocated value of goodwill primarily relates to the acquired workforce, as well as the anticipated synergies resulting from combining Casey & Casey with our current products and processes. Both the acquired goodwill and intangible assets are deductible for tax purposes.
The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
			Weighted-
			Average
	Amount		Useful Life
	(In thousands)		(Years)
Customer relationships	$	6,000	9
Technology		1,900	4
Trade names		1,900	10
State DMV relationships		1,600	8
Non-compete agreement		590	6
Total acquired identifiable intangible assets	$	11,990
The results of Casey & Casey were included in our consolidated statement of operations from the date of acquisition. Casey & Casey revenue, which is primarily transaction-based, was $6.5 million from the date of acquisition through December 31, 2013. We are unable to provide Casey & Casey earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
iCONNECT DMS Business Acquisition
On November 1, 2012, Dealertrack Canada, Inc. acquired the assets of Ford Motor Company of Canada, Limited's (Ford) iCONNECT Direct DMS business for CAD $6.9 million (USD $6.9 million) in cash. As part of the agreement, we will assume control and own the administrative, sales, and support operations of Ford's iCONNECT Direct DMS in the Canadian provinces. In conjunction with the acquisition, we recorded a gain of $0.6 million in other income relating to previously deferred revenue and costs.
We expensed approximately $0.1 million of professional fees associated with the acquisition in the year ended December 31, 2012.
This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their estimated fair values at the date of acquisition as follows (in thousands):
Current assets	$	91
Customer relationships (10 year economic life)		4,328
Goodwill		2,528
Total assets acquired		6,947
Total liabilities assumed		—
Net assets acquired	$	6,947
The allocated value of goodwill primarily related to the anticipated synergies resulting from combining iCONNECT with our current processes. Both the acquired goodwill and intangible assets are deductible for tax purposes.
The results of iCONNECT DMS were included in our consolidated statement of operations from the date of acquisition. The incremental subscription services revenue from iCONNECT DMS was $0.1 million from the date of acquisition through December 31, 2012. We are unable to provide iCONNECT DMS earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
ClickMotive Acquisition
On October 1, 2012, Dealertrack, Inc. purchased all of the equity interests of ClickMotive LLC, a leading provider of interactive marketing solutions for the automotive retailing industry. The total consideration, which consisted of $48.7 million, net of cash acquired, and $0.3 million in contingent consideration, is reflective of final working capital adjustments.
The sellers were eligible to receive additional consideration of up to $4.5 million, a portion of which was based upon the achievement of certain revenue performance targets in 2013.  The fair value of the revenue contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The total contingent consideration was revalued each reporting period, with the resulting gains and losses recorded in the consolidated statements of operations. The fair value of the total contingent consideration as of the acquisition date was estimated at $0.3 million. We estimated the fair value of the total contingent consideration as of December 31, 2012 to be $1.0 million. The increase included the impact of an adjustment to the performance targets made subsequent to the close of the acquisition. We estimated the fair value of the total contingent consideration as of December 31, 2013 to be $0.5 million. We recorded income of $0.5 million in the three months ended June 30, 2013 as a result of a decrease in revenue forecasts.
ClickMotive provides SaaS solutions to the automotive industry by offering a comprehensive digital marketing platform that combines the power of the web, mobile, social, search and video into one online marketing platform.
We expensed approximately $1.0 million of professional fees associated with the acquisition in the year ended December 31, 2012.
Additionally, we made payments to certain former employees of ClickMotive related to continued employment through June 2013 that resulted in compensation expense of approximately $0.2 million and $0.1 million in our consolidated statement of operations in 2013 and 2012, respectively.
This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their estimated fair values at the date of acquisition as follows (in thousands):
Current assets	$	3,862
Property and equipment		810
Intangible assets		21,840
Goodwill		26,241
Total assets acquired		52,753
Total liabilities assumed		-2,897
Net assets acquired	$	49,856
The allocated value of goodwill primarily related to the acquired workforce, as well as the anticipated synergies resulting from combining ClickMotive with our current products and processes.  Both the acquired goodwill and intangible assets are deductible for tax purposes.
The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
			Weighted-
			Average
	Amount		Useful Life
	(In thousands)		(Years)
Customer relationships	$	12,500	10.0
Technology		7,600	8.0
Trade names		1,500	8.0
Non-compete agreement		240	5.0
Total acquired identifiable intangible assets	$	21,840
The results of ClickMotive were included in our consolidated statement of operations from the date of acquisition. ClickMotive revenue, which is subscription-based, was $4.4 million from the date of acquisition through December 31, 2012. We are unable to provide ClickMotive earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
1st Auto Transport Directory Acquisition
On August 1, 2012, Dealertrack, Inc. purchased all of the issued and outstanding shares of capital stock of 1st Auto Transport Directory, Inc., now known as Dealertrack CentralDispatch, Inc. for a cash purchase price of $73.8 million,  reflective of final working capital adjustments.
Dealertrack CentralDispatch delivers a comprehensive suite of vehicle transportation related solutions for auto dealers, brokers, shippers, and carriers within the U.S. and Canadian automotive retail markets. Dealertrack CentralDispatch’s offerings include CentralDispatch.com, a leading business-to-business, subscription-based network for facilitating vehicle transportation, with more than 13,000 network subscribers;  jTracker.com, a CRM and lead management tool for automotive transportation brokers; and MoveCars.com, an online advertising directories for the vehicle transportation industry. Dealertrack CentralDispatch is now part of our Inventory solution. We expect this acquisition to increase subscription services revenue from dealerships while helping dealers improve their overall efficiency and profitability.
We expensed approximately $0.9 million of professional fees associated with the acquisition for the year ended December 31, 2012, respectively.
This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their estimated fair values at the date of acquisition as follows (in thousands):
Current assets	$	224
Property and equipment		101
Intangible assets		25,340
Goodwill		48,350
Total assets acquired		74,015
Total liabilities assumed		-215
Net assets acquired	$	73,800
The allocated value of goodwill primarily related to the acquired workforce, as well as the anticipated synergies resulting from combining Dealertrack CentralDispatch with our current products and processes.  We made a 338(h)(10) election for tax purposes in connection with the transaction.  As a result, both the acquired goodwill and intangible assets are expected to be deductible for tax purposes.
The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
			Weighted-
			Average
	Amount		Useful Life
	(In thousands)		(Years)
Technology	$	14,200	7.0
Customer relationships		7,930	4.0
Trade names		2,800	7.0
Non-compete agreement		410	4.0
Total acquired identifiable intangible assets	$	25,340
The results of Dealertrack CentralDispatch were included in our consolidated statement of operations from the date of acquisition. Dealertrack CentralDispatch revenue, which is subscription-based, was $4.5 million from the date of acquisition through December 31, 2012. We are unable to provide Dealertrack CentralDispatch earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
eCarList Acquisition
On July 1, 2011,  we acquired substantially all of the assets of eCarList, LLC for a purchase price of  $36.4 million, reflective of final working capital adjustments. eCarList provides a suite of inventory management and online marketing tools for the retail automotive industry, enabling dealers to appraise, price, and merchandise vehicle inventory online in real-time. eCarList’s solutions and services, exclusive of website offerings which are included in the Interactive Solutions, are now part of Dealertrack Inventory solutions.  We expect this acquisition will expand our subscription services revenue and further strengthen our relationships with automobile dealers.
The initial purchase price of eCarList was $36.4 million, consisting of the following components (in thousands):
Cash consideration	$	23,451
Fair value of note payable		10,179
Discount on note payable		-123
Fair value of contingent consideration		2,900
Total purchase price	$	36,407
The note payable had a face value of approximately $11.4 million and a term of either two years or six years, based on certain factors related to the retention of key individuals. As a result, the note had a compensatory element that resulted in compensation expense of approximately $1.3 million in our consolidated statement of operations over the two year period from the date of acquisition. The note payable was paid on July 1, 2013.  Additionally, we made payments to certain former employees of eCarList related to continuing employment that resulted in compensation expense of approximately $2.2 million being recorded in our consolidated statement of operations over the two year period from the date of acquisition.
The sellers could earn contingent consideration of up to $10.0 million, consisting of up to $5.0 million payable in each of 2012 and 2013 based upon the achievement of certain performance targets in 2011 and 2012, respectively. The fair value of the contingent consideration was measured on a quarterly basis until the contingency was resolved. Any subsequent changes to the fair value of the contingent consideration was recorded in our consolidated statement of operations. The fair value of the contingent consideration as of the July 1, 2011 was estimated at $2.9 million. We estimated the fair value of the contingent consideration as of December 31, 2011 to be $0.9 million using similar methodology. We recorded income of $2.0 million for the three months ended December 31, 2011 as a result of the decrease in the contingent consideration liability. We recorded a fair value adjustment in the amount of $0.9 million of income for the year ended December  31, 2012 as a result of the decrease in the estimated settlement of the contingent consideration from the estimated amount as of December 31, 2011. No amounts were earned, and no amounts were paid, based upon 2011 or 2012 revenue.
We expensed approximately $1.2 million of professional fees associated with the acquisition for the year ended December 31, 2011. These fees were recorded in selling, general and administrative expenses.
This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their estimated fair values at the date of acquisition as follows (in thousands):
Current assets	$	414
Property and equipment		72
Intangible assets		13,530
Goodwill		23,427
Total assets acquired		37,443
Total liabilities assumed		-1,036
Net assets acquired	$	36,407
The allocated value of goodwill primarily related to the anticipated synergies resulting from combining eCarList with our current products and processes and the acquired workforce. Both the acquired goodwill and intangible assets are deductible for tax purposes.
The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
			Weighted-
			Average
	Amount		Useful Life
	(In thousands)		(Years)
Customer relationships	$	4,500	7.0
Technology		6,500	4.0
Non-compete agreements		730	5.0
Trade names		1,800	7.0
Total acquired identifiable intangible assets	$	13,530
The results of eCarList were included in our consolidated statement of operations from the date of acquisition. eCarList’s revenue from the date of acquisition through December  31, 2011, was $7.0 million. We are unable to provide eCarList’s earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
triVIN Holdings, Inc. Acquisition
On January 31, 2011, we acquired all of the outstanding shares of triVIN Holdings, Inc., now known as Dealertrack Processing Solutions, Inc., for a purchase price of $125.5 million, net of acquired cash, reflective of final working capital adjustments. Dealertrack Processing Solutions is a leading provider of automobile title management services to lenders and vehicle registration services to automobile dealers. We expect this acquisition will significantly expand our transaction business and further strengthen our relationship with lenders and automobile dealers. We expensed approximately $0.5 million of professional fees associated with the acquisition in the fourth quarter of 2010 and $0.3 million for the year ended December 31, 2011. These fees were recorded in selling, general and administrative expenses.
This business combination was accounted for under the acquisition method of accounting, resulting in the total purchase price being allocated to the assets acquired and liabilities assumed according to their estimated fair values at the date of acquisition as follows (in thousands):
Current assets	$	33,442
Property and equipment		825
Non-current assets		6,526
Intangible assets		83,760
Goodwill		74,217
Total assets acquired		198,770
Total liabilities assumed		-58,406
Net assets acquired	$	140,364
Included in current assets was approximately $14.9 million of cash acquired. The liabilities assumed includes a $33.5 million deferred tax liability that relates to the future amortization of certain acquired intangibles.
The allocated value of goodwill primarily related to the anticipated synergies resulting from combining Dealertrack Processing Solutions with our current products and processes and the acquired workforce. Neither the acquired goodwill nor intangible assets are deductible for tax purposes.
The amounts allocated to acquired intangible assets and their associated weighted-average useful lives, which were determined based on the period which the assets are expected to contribute directly or indirectly to our future cash flows, consist of the following:
			Weighted-
			Average
	Amount		Useful Life
	(In thousands)		(Years)
Customer relationships	$	43,900	6.4
Technology		27,500	5.0
State DMV contractual relationships		6,190	6.0
Non-compete agreements		5,180	3.0
Trade names		990	3.0
Total acquired identifiable intangible assets	$	83,760
The results of Dealertrack Processing Solutions, Inc. were included in our consolidated statement of operations from the date of acquisition. Dealertrack Processing Solutions, Inc. revenue from the date of acquisition through December 31, 2011, was $57.7 million. We are unable to provide Dealertrack Processing Solutions, Inc. earnings since the date of acquisition as we do not have stand-alone earnings reporting for that business.
Unaudited Pro Forma Summary of Operations
The accompanying unaudited pro forma summary represents our consolidated results of operations as if the contribution of the net assets of Chrome to the Chrome Data Solutions joint venture and the acquisitions of CentralDispatch and ClickMotive had been completed as of January 1, 2011, and the acquisitions of Casey & Casey, CFM and Vintek had been completed as of January 1, 2012.  The unaudited pro forma financial results for 2013 reflect the results for the year ended December 31, 2013, as well as the effects of the pro forma adjustments for the stated transactions in 2013. The unaudited pro forma financial results for 2012 reflect the results for the year ended December 31, 2012, as well as the effects of the pro forma adjustments for the stated transactions in both 2013 and 2012. Pro forma results of operations for the acquisitions of Nexteppe and Ford’s iCONNECT DMS have not been presented because they are not material to the consolidated statement of operations. The unaudited pro forma financial information includes the accounting effects of the business combinations, including adjustments to the amortization of intangible assets, professional fees associated with the transactions, and compensation expense related to amounts to be paid for continued employment. The unaudited pro forma information does not necessarily reflect the actual results that would have been achieved, nor is necessarily indicative of our future consolidated results.
				Year Ended December 31,
				2013		2012
				(in thousands, except per share data)
Net revenue				$	502,547	$	433,746
Net income					7,817		25,705
Basic net income per share					0.18		0.60
Diluted net income per share					0.17		0.58

Accrued_Liabilities_Other

Accrued Liabilities - Other	12 Months Ended
	Dec. 31, 2013
Accrued Liabilities - Other [Abstract]	'
Accrued Liabilities - Other	'
	10. Accrued Liabilities - Other
	A summary of the components of accrued liabilities – other as of December 31, 2013 and 2012 is as follows (in thousands):
		31-Dec-13		31-Dec-12
	Professional fees	$	5,295	$	2,564
	Customer deposits		2,368		2,360
	Computer and office equipment, furniture and fixtures		1,495		968
	Revenue share		1,510		1,096
	Acquisition-related compensation		647		1,667
	Sales taxes		2,087		779
	Interest payable		981		1,439
	State DMV transaction fees		695		620
	Software licenses and maintenance contracts		278		1,071
	Utilities and occupancy		589		455
	Marketing		370		351
	Other		4,969		3,500
	Total accrued liabilities – other	$	21,284	$	16,870

Senior_Convertible_Notes

Senior Convertible Notes	12 Months Ended
	Dec. 31, 2013
Senior Convertible Notes And Revolving Credit Facility [Abstract]	'
Senior Convertible Notes	'
	11. Senior Convertible Notes
	On  March 5, 2012, we issued $200.0 million aggregate principal amount of 1.50% senior convertible notes in a private placement. In connection with the offering of the notes, we entered into privately negotiated convertible note hedge transactions with initial purchasers of the notes or their respective affiliates.  The net proceeds from the offering were $178.8 million after deducting the initial purchaser’s fees and offering expenses, as well as the cost of the hedge transactions and warrant proceeds.
	The notes are senior unsecured obligations, subordinated in right of payment to existing and future secured senior indebtedness. The notes bear interest at a coupon rate of 1.50% per year, payable semi-annually in cash on March 15 and September 15 of each year, beginning on September 15, 2012. We do not have the right to redeem the notes prior to maturity. The notes will mature on March 15, 2017, unless earlier repurchased or converted.
	In the event of a fundamental change, including but not limited to delisting, liquidation, dissolution and other defined events, prior to maturity, the holders of the notes will have the ability to require us to repurchase all or any portion of their notes for cash at a repurchase price equal to 100% of the principal amount of the notes being repurchased plus any accrued and unpaid interest. If and only to the extent holders elect to convert the notes in connection with a make-whole fundamental change, there will be an increase in the conversion rate of a number of additional shares, which is based upon on the effective date of, and the price paid (or deemed paid) per share of our common stock in, such make-whole fundamental change.  If holders of our common stock receive only cash in connection with certain make-whole fundamental changes, the price paid (or deemed paid) per share will be the cash amount paid per share. Otherwise, the price paid (or deemed paid) per share will be equal to the average of the closing sale prices of our common stock on the ten consecutive trading days prior to, but excluding, the effective date of such make-whole fundamental change.
	Prior to October 15, 2016, the notes will be convertible only upon the occurrence of certain events and during certain periods, and thereafter, at any time until the second scheduled trading day immediately preceding the maturity date. Upon conversion, holders will receive, at our discretion, cash, shares of our common stock or a combination thereof. The initial conversion rate will be 26.7618 shares of our common stock (subject to customary adjustments) per $1,000 principal amount of notes, which is equivalent to an initial conversion price of approximately $37.37 per share of our common stock, which represents a conversion premium of approximately 33.50% to the closing sale price of $27.99 per share of our common stock on February 28, 2012. In addition, following certain corporate transactions that occur prior to the maturity date, in certain circumstances, we will increase the conversion rate for a holder that elects to convert its notes in connection with such a corporate transaction.
	A holder of the notes may convert the notes under the following circumstances: (i) prior to October 15, 2016, on any date during any calendar quarter beginning after June 30, 2012 (and only during such calendar quarter) if the closing sale price of our common stock was more than 130% of the then current conversion price for at least 20 trading days in the period of the 30 consecutive trading days ending on the last trading day of the previous calendar quarter; (ii) prior to October 15, 2016, if we distribute rights, options or warrants to all or substantially all holders of our common stock entitling them to purchase, for a period of 45 calendar days or less from the declaration date for such distribution, shares of our common stock at a price per share less than the average closing sale price of our common stock for the ten consecutive trading days immediately preceding, but excluding, the declaration date for such distribution; (iii) prior to October 15, 2016, if we distribute to all or substantially all holders of our common stock cash, other assets, securities or rights to purchase our securities (other than upon implementation of a rights plan) which distribution has a per share value exceeding 10% of the closing sale price of our common stock on the trading day immediately preceding the declaration date for such distribution, or if we engage in certain corporate transactions as described in the indenture for the notes; (iv) prior to October 15, 2016, during the five consecutive business-day period following any ten consecutive trading-day period in which the trading price per $1,000 principal amount of notes for each trading day during such ten trading-day period was less than 98% of the closing sale price of our common stock for each trading day during such ten trading-day period multiplied by the then current conversion rate; or (v) on or after October 15, 2016, and on or prior to the second scheduled trading day immediately preceding the maturity date, without regard to the foregoing conditions.
	In accordance with accounting guidance for debt with conversion and other options, we separately accounted for the liability and equity components of the notes. The estimated fair value of the liability component at the date of issuance was $156.1 million, and was computed based on the fair value of similar debt instruments that did not include a conversion feature. The equity component of $43.9 million was recognized as a debt discount and recorded as additional paid-in capital. The debt discount represents the difference between the $200.0 million principal amount of the notes and the $156.1 million estimated fair value of the liability component at the date of issuance. The debt discount will be amortized over the expected life of a similar liability without the equity component. We determined this expected life to be equal to the term of the notes, resulting in an amortization period for 5 years, ending March 15, 2017. The effective interest rate used to amortize the debt discount is approximately 6.75%, which was based on our estimated non-convertible borrowing rate of a similar liability without an equity component as of the date the notes were issued.
	As of December 31, 2013, the "if-converted value" of the notes exceeded the principal amount by $57.3 million.
	Issuance costs of $7.0 million related to the issuance of the notes were allocated to the liability and equity components in proportion to the allocation of the proceeds and accounted for as capitalized debt issuance costs and equity issuance costs, respectively. The amount allocated to capitalized debt issuance costs was $5.4 million. As of December 31, 2013, total capitalized debt issuance costs remaining to be amortized to interest expense were $3.7 million.
	The net carrying amount of the liability component of the notes as of December 31, 2013 and 2012 consists of the following (in thousands):
			31-Dec-13		31-Dec-12
	Principal amount	$	200,000	$	200,000
	Unamortized discount		29,683		37,721
	Net carrying value	$	170,317	$	162,279
	Total interest expense associated with the notes consisted of the following for the year ended December 31, 2013 and 2012 (in thousands):
		Year Ended December 31,
		2013		2012
	Cash interest expense (1.50% coupon rate)	$	3,000	$	2,458
	Amortization of debt issuance costs and debt discount		9,032		6,989
	Total interest expense	$	12,032	$	9,447
	In connection with the offering of the notes, we entered into privately negotiated convertible note hedge transactions with initial purchasers of the notes or their respective affiliates (the hedge counterparties). The convertible note hedge transactions will cover, subject to customary anti-dilution adjustments, the number of shares of our common stock that will initially underlie the notes and are intended to reduce the potential dilutive impact of the conversion feature of the notes. We have also entered into separate privately negotiated warrant transactions with the hedge counterparties.
	The convertible note hedge will terminate upon the earlier of the maturity date of the notes or the first day the notes are no longer outstanding. We paid $43.9 million for the convertible note hedges, which were recorded as a reduction to additional paid-in capital.
	The warrant transactions have an initial strike price of approximately $46.18 per share, and may be settled in cash or shares of our common stock, at our option. The warrant transactions will have a dilutive effect to the extent that the market price per share of our common stock exceeds the applicable strike price of the warrants. Proceeds received from the warrant transactions totaled $29.7 million and were recorded as additional paid-in capital. The warrants expire at various dates during 2017.
	The convertible note hedge and warrants are both considered indexed to our common stock and classified as equity; therefore, the convertible note hedge and warrants are not accounted for as derivative instruments.
	It is our intent to settle the par value of the notes in cash and we expect to have the liquidity to do so based upon cash on hand, net cash flows from operations, and our credit facility. As a result, there would be no potential impact to diluted earnings per share unless the average share price of our common stock for the respective periods exceeds the conversion price of $37.37, with additional dilution if the average share price exceeds the warrant strike price of $46.18.
	For the years ended December 31, 2013 and 2012, the average share price of our common stock did not exceed the conversion price of $37.37, therefore there was no impact to diluted earnings per share. The average share price of our common stock did exceed the conversion price of $37.37 for the third and fourth quarter of 2013, in which the impact was 288 thousand and 546 thousand diluted shares, respectively.
	For the years ended December 31, 2013 and 2012, the average share price did not exceed the warrant strike price of $46.18, therefore there was no additional impact to our diluted earnings per share calculations.

Revolving_Credit_Facility

Revolving Credit Facility	12 Months Ended
	Dec. 31, 2013
Senior Convertible Notes And Revolving Credit Facility [Abstract]	'
Revolving Credit Facility	'
	12. Revolving Credit Facility
	On April 20, 2011, we entered into a $125.0 million revolving credit facility (including a $25.0 million Canadian sublimit), which is available for general corporate purposes (including capital expenditures and investments), subject to certain conditions. The agreement permitted us to borrow an additional $100.0 million of funds. Our obligations under the credit facility are guaranteed by certain of our existing and future subsidiaries and secured by substantially all of the assets of the company and such subsidiaries.
	Our credit facility contains restrictive covenants that limit our ability and our existing or future subsidiaries’ abilities, among other things, to:
		•	incur additional indebtedness;
		•	pay dividends or make distributions in respect of our, or our existing or future subsidiaries’, capital stock or to make certain other restricted payments or investments;
		•	make certain investments, loans, advances, guarantees or acquisitions;
		•	enter into sale and leaseback transactions;
		•	agree to payment restrictions;
		•	incur additional liens;
		•	consolidate, merge, sell or otherwise dispose of all or substantially all of our or the applicable subsidiary’s assets;
		•	enter into transactions with our or the applicable subsidiary’s affiliates;
		•	sell assets;
		•	make capital expenditures;
		•	make optional payments in respect of and amendments to certain other types of debt;
		•	enter into swap agreements;
		•	change certain fiscal periods; and
		•	enter into new lines of business.
	In addition, our credit facility requires us and our subsidiaries to maintain compliance with specified financial ratios on a consolidated basis. Our and our subsidiaries’ ability to comply with these ratios may be affected by events beyond our control.
	Our credit facility contains the following affirmative covenants, among others: delivery of financial statements, reports, accountants’ letters, budgets, officers’ certificates and other information requested by the lenders; payment of other obligations; maintenance of existence and rights and privileges; maintenance of property and insurance; right of the lenders to inspect property and books and records; compliance with environmental laws; and covenants regarding additional collateral.
	On February 27, 2012, we entered into a first amendment to the credit agreement, which, among other things: (i) permits us to make mandatory interest and principal payments and settle conversions in respect of the senior convertible notes in cash, shares of our common stock, or a combination thereof; and (ii) permits us to enter into the hedge transactions and warrants in connection with the private offering of the notes (as described above).
	On February 29, 2012, we entered into a second amendment to the amended credit agreement, which, among other things:  (i) reduces the commitment fee payable under and the interest rate margins applicable to extensions of credit pursuant to the amended credit agreement; (ii) extends the termination date of the revolving commitments under the amended credit agreement to March 1, 2017; (iii) increases to $200.0 million (from $100.0 million) the maximum aggregate incremental term loans and revolving commitments that may be made available to us under the amended credit agreement; and (iv) revises the financial maintenance covenants in the amended credit agreement to increase the maximum leverage ratio and decrease the minimum interest coverage ratio, and to add a maximum secured leverage ratio.
	The interest rate on the amended credit facility is determined quarterly and is equal to LIBOR or Prime, as applicable, plus a margin of (a) between 150 basis points and 225 basis points in the case of Eurodollar/CDOR loans and (b) between 50 basis points and 125 basis points in the case of ABR loans. The rate, in each case, is based on a consolidated leverage ratio for us and our restricted subsidiaries (the ratio of consolidated total debt of us and our restricted subsidiaries to consolidated EBITDA of us and our restricted subsidiaries). Additionally, under the credit facility we are required to make quarterly commitment fee payments on any available unused revolving amounts at a rate between 25 basis points and 40 basis points based on our consolidated leverage ratio.
	We capitalized approximately $2.7 million of total debt issuance costs associated with the credit facility, of which $1.4 million was remaining to be amortized to interest expense as of December 31, 2013. Debt issuance costs associated with the credit facility amortized to interest expense for the years ended December 31, 2013,  2012 and 2011 were $0.4 million, $0.5 million and $0.3 million, respectively. Interest expense related to the commitment fee for the years ended December 31, 2013,  2012 and 2011 were $0.4 million, $0.5 million and $0.3 million, respectively.
	As of December 31, 2013, we had no amounts outstanding under our credit facility and were in compliance with all restrictive covenants and financial ratios.

Retirement_Plans

Retirement Plans	12 Months Ended
	Dec. 31, 2013
Retirement Plans [Abstract]	'
Retirement Plans	'
	13. Retirement Plans
	As of December 31, 2013, we maintained two retirement plans in which team members are eligible to participate.
	U.S. team members are eligible to participate in a 401(k) plan which covers substantially all team members meeting certain age requirements in accordance with section 401(k) of the Internal Revenue Code. Under the provisions of the 401(k) plan, we have the ability to make matching contributions equal to a percentage of the employee’s voluntary contribution, as well as an additional matching contribution at year end and a non-elective contribution.
	As of December 31, 2013,  2012 and 2011, we elected to make additional matching contributions covering all team members who were active participants on the last day of the plan year in the amount of $0.8 million, $0.8 million and $1.2 million, respectively, or approximately 36%,  52% and 127% of matching contributions made during the year, respectively.
	Total contributions under the plan for the years ended December 31, 2013,  2012 and 2011 were $3.1 million, $2.3 million and $2.1 million, respectively.
	Canadian team members are eligible to participate in a registered retirement savings plan (RRSP) which covers all full time team members. Under the provisions of the RRSP, we are required to match 100% of employee contributions to the plan up to 6% of eligible earnings. Our contributions under the RRSP for the years ended December 31, 2013,  2012 and 2011 were $0.6  million, $0.5 million and $0.5 million, respectively.

Stock_Option_And_Deferred_Comp

Stock Option And Deferred Compensation Plans	12 Months Ended
	Dec. 31, 2013
Stock Option And Deferred Compensation Plans [Abstract]	'
Stock Option And Deferred Compensation Plans	'
	14. Stock Option and Deferred Compensation Plans
	Fourth Amended and Restated 2005 Incentive Award Plan
	Currently, we grant stock options, performance stock units, and restricted stock units, under the 2005 Incentive Award Plan. There is an aggregate of 16,405,847 shares authorized for issuance under the 2005 Plan. As of December 31, 2013, there are 3,258,913 shares available for future issuance.
	The following summarizes stock-based compensation expense by expense category for the three years ended December 31, 2013,  2012 and 2011 (in thousands):
			December 31,
			2013				2012			2011
	Cost of revenue		$	2,828			$	2,429		$	1,791
	Product development			727				749			735
	Selling, general and administrative			10,836				10,414			9,086
	Total stock-based compensation expense		$	14,391			$	13,592		$	11,612
	Stock Options
	The following table summarizes the activity under our stock option plans as of December 31, 2013:
								Weighted Average
			Number of					Remaining		Aggregate
			Options		Weighted Average			Contractual Life		Intrinsic Value
			(in thousands)		Exercise Price			(in years)		(in thousands)
	Outstanding as of January 1, 2013		3,817		$	18.73
	Options granted		421			29.10
	Options exercised		-624			14.68
	Options forfeited		-98			25.46
	Options expired		-3			29.20
	Outstanding as of December 31, 2013		3,513		$	20.50		3.10		$	96,887
	Vested and expected to vest as of December 31, 2013		3,486		$	20.44		3.08		$	96,360
	Options exercisable as of December 31, 2013		2,653		$	18.59		2.34		$	78,245
	The exercise prices range from $2.80 to $47.98 for stock options outstanding and exercisable for the year ended December 31, 2013. The aggregate intrinsic value of options outstanding, vested and unvested expected to vest, and exercisable, represents the total pre-tax intrinsic value, based on our closing stock price.
	The intrinsic value of the stock options exercised during the years ended December 31, 2013,  2012 and 2011 was approximately $12.8 million, $11.3 million and $10.3 million, respectively.
	Restricted Stock Units, Performance Stock Units and Restricted Stock Awards
	The following table summarizes the status of the non-vested shares of restricted common stock units and performance stock units as of December 31, 2013:
			Restricted Common Stock Units					Performance Stock Units
			Number of		Weighted			Number of		Weighted
			Awards		Average Grant			Awards		Average Grant
			(in thousands)		Date Fair Value			(in thousands)		Date Fair Value
	Non-vested awards as of January 1, 2013		959		$	21.21		269		$	21.41
	Awards granted		466			30.00		72			29.62
	Awards vested		-385			18.47		-99			17.40
	Awards cancelled/expired/forfeited		-77			26.98		—			—
	Adjustment for performance achieved		—			—		28			23.19
	Non-vested awards as of December 31, 2013		963		$	26.09		270		$	25.25
	The total fair value for restricted common stock units, performance stock units, and restricted common stock awards that vested during the years ended December 31, 2013,  2012 and 2011, are as follows (in thousands):
			December 31,
			2013			2012			2011
	Restricted common stock units		$	7,104		$	9,285		$	5,470
	Performance stock units		$	1,727		$	—		$	—
	Restricted common stock awards		$	—		$	—		$	701
	Employee Stock Purchase Plan (ESPP)
	For team members eligible to participate on the first date of an offering period, the purchase price of shares of common stock under the ESPP is 95% of the fair market value of the shares on the last day of the offering period, which is the date of purchase. As of December 31, 2013, there are 1,500,000 shares of common stock reserved, 416,166 shares issued and 1,083,834 shares available for future issuance under the ESPP.
	Employees’ Deferred Compensation Plan
	The Employees’ Deferred Compensation Plan is a non-qualified retirement plan that allows a select group of our management to elect to defer certain bonuses that would otherwise be payable to the employee. Amounts deferred under the Employees’ Deferred Compensation Plan are general liabilities of ours and are represented by bookkeeping accounts maintained on behalf of the participants. Such accounts are deemed to be invested in share units that track the value of our common stock. Distributions will generally be made to a participant following the participant’s termination of employment or other separation from service, following a change of control if so elected, or over a fixed period of time elected by the participant prior to the deferral. Distributions will generally be made in the form of shares of our common stock. As of December 31, 2013,  150,000 shares of common stock are reserved, 2,177 deferred stock units were recorded under a memo account and have since been distributed and 147,823 shares of common stock are available for distribution under the Employees’ Deferred Compensation Plan.
	Directors’ Deferred Compensation Plan
	The Directors’ Deferred Compensation Plan is a non-qualified retirement plan that allows each board member to elect to defer certain fees that would otherwise be payable to the director. Amounts deferred under the Directors’ Deferred Compensation Plan are general liabilities of ours and are represented by bookkeeping accounts maintained on behalf of the participants. Such accounts are deemed to be invested in share units that track the value of our common stock. Distributions will generally be made to a participant following the participant’s termination of service, following a change of control if so elected, or over a fixed period of time elected by the participant prior to the deferral. Distributions will generally be made in the form of shares of our common stock. As of December 31, 2013,  75,000 shares of common stock are reserved, with 62,503 deferred stock units recorded under a memo account and 12,497 deferred stock units distributed under the Director’s Deferred Compensation Plan. Deferred stock units, as permitted under the plan, are now reserved out of the Stock Option Plan with 3,107 deferred stock units recorded under a memo account to date.
	Performance Stock Units (PSUs)
	PSUs are granted annually to certain executive officers of the company. The actual number of performance stock units to be delivered is subject to adjustment ranging from 0% (threshold) to 150% (maximum) based solely upon the achievement of certain performance targets and other vesting conditions. One performance stock award is the equivalent of one share of common stock.
	The following table summarizes, by performance award type, the potential threshold and maximum stock units:
		Threshold		Maximum		Threshold		Maximum		Threshold		Maximum
		ANI		ANI		Revenue		Revenue		TSR		TSR
	2010 Plan	25%		125%		-		-		0%		150%
	2011 Plan	25%		125%		-		-		0%		150%
	2012 Plan	25%		125%		-		-		0%		150%
	2013 Plan	-		-		25%		150%		25%		150%
	For 2013, each individual’s award was allocated 50% to achieving revenue targets for the year in which the award was granted (Revenue Performance Award), and 50% to the total stockholder return (TSR) of our common stock as compared to other companies in a specific NASDAQ Index in the aggregate for a three year period including the fiscal year in which the award was granted, as well as the two subsequent fiscal years (TSR Performance Award).
	For 2012 and 2011, each individual’s award was allocated 50% to achieving ANI targets for the year in which the award was granted (ANI Performance Award), and 50% to the total stockholder return (TSR) of our common stock as compared to other companies in a specific NASDAQ Index in the aggregate for a three year period including the fiscal year in which the award was granted, as well as the two subsequent fiscal years (TSR Performance Award). The TSR awards granted in 2010 and 2011 were measured against the NASDAQ Internet Index and the TSR awards granted in 2012 and 2013 were measured against the NASDAQ Software Index.
	The awards will be earned based upon our achievement of revenue, ANI and TSR targets, but will not vest unless the grantee remains continuously employed in active service through the end of February of the third year following the grant date (approximately 36 months after date of grant). The performance stock units are subject to forfeiture if the company’s performance goals are not achieved. The awards are subject to acceleration in full if an executive is terminated without cause, or resigns for good reason within twelve months of a change in control.
	We have valued the Revenue Performance Awards, the ANI Performance Awards and the TSR Performance Awards using the Black-Scholes-Merton and Monte Carlo valuation pricing models, respectively. Revenue awards are expensed starting in the month of grant, as it is deemed probable that we will achieve a portion of the Revenue targets for the respective grant. Historically, ANI awards have been expensed starting in the month of grant for each grant year, as it was deemed probable that we would achieve a portion of the ANI targets for the respective grant. TSR awards are expensed on a straight-line basis, starting at the date of grant, over the applicable service period. As long as the service condition is satisfied, the expense is not reversed, even in the event the TSR Performance Award targets are not achieved.
The following table summarizes, by performance award type, the status of PSUs for grants during the years ended December 31, 2013,  2012 and 2011:
Revenue Performance Awards
								Adjusted
								Number of
		Target				Percent of		PSUs Based on		End of
		Number		Cancelled		Goal		Goal		Measurement
Grant Date		of PSUs		PSUs		Achieved		Achievement		Period		Vest Date
3/4/13		36,948		—		118%		43,596		12/31/13		2/28/16
ANI Performance Awards
								Adjusted
								Number of
		Target				Percent of		PSUs Based on		End of
		Number		Cancelled		Goal		Goal		Measurement
Grant Date		of PSUs		PSUs		Achieved		Achievement		Period		Vest Date
2/24/11		43,290		*		125%		54,111		12/31/11		1/31/14
2/28/12		35,495		—		103%		36,556		12/31/12		1/31/15
* - In 2011, 4,630 of 2011 ANI Performance Awards were cancelled and subsequently reissued.
TSR Performance Awards
								Adjusted
								Number of
		Target				Percent of		PSUs Based on		End of
		Number		Cancelled		Goal		Goal		Measurement
Grant Date		of PSUs		PSUs		Achieved		Achievement		Period		Vest Date
2/24/11		43,290		**		150%		64,934		12/31/13		1/31/14
2/28/12		35,495		—		N/A		—		12/31/14		1/31/15
3/4/13		35,065		—		N/A		—		12/31/15		2/28/16
** - In 2011, 4,630 of 2011 TSR Performance Awards were cancelled and subsequently reissued.
The total grant date fair value of the Revenue Performance Awards granted during the year ended December 31, 2013 was $1.1 million. The total grant date fair value of the ANI Performance Awards granted during the years ended December 31, 2012 and 2011 was $1.0 million and $0.9 million, respectively. The total grant date fair value of the TSR Performance Awards granted during the years ended December 31, 2013, 2012 and 2011 was $1.1 million, $1.0 million and $1.0 million, respectively.
SOEP
On August 7, 2009, we commenced a tender offer to exchange outstanding options to purchase shares of our common stock granted prior to August 7, 2008, that had an exercise price per share greater than $22.82 (Eligible Options) for a lesser number of new options to purchase shares of our common stock with an exercise price equal to the closing price of our common stock on the date of grant, subject to certain conditions. Pursuant to the exchange offer, 571,763 Eligible Options were tendered, and we granted an aggregate of 435,247 stock options in exchange for the Eligible Options surrendered. Exchanged options granted under the SOEP vested 25% after six months from the new grant date, 25% after twelve months from the new grant date, and 1/48 each month thereafter.  The expected life was determined by means of Monte-Carlo simulations. The incremental fair value stock-based compensation expense of $54 thousand was amortized over the new vesting schedule, which ended during the year ended December 31, 2012.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Income Taxes	'
	15. Income Taxes
	The components of our income before provision for income taxes for the years ended December 31, 2013,  2012 and 2011, is as follows (in thousands):
		December 31,
		2013		2012		2011
	United States	$	-8,694	$	21,091	$	55,376
	Canada		13,261		11,612		7,356
	Total income before provision for income taxes	$	4,567	$	32,703	$	62,732
	The components of our (provision for) benefit from income taxes for the years ended December 31, 2013,  2012 and 2011, is as follows (in thousands):
		December 31,
		2013		2012		2011
	Current tax:
	Federal	$	-4,993	$	-6,859	$	1,108
	State and local		-1,155		-1,767		-454
	Canada		-3,864		-2,872		-1,621
	Total current tax		-10,012		-11,498		-967
	Deferred tax:
	Federal		8,892		-1,131		1,412
	State and local		2,069		729		2,232
	Canada		378		-349		-274
	Total deferred tax		11,339		-751		3,370
	(Provision for) benefit from income taxes, net	$	1,327	$	-12,249	$	2,403
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes using enacted tax rates in effect in the year in which the differences are expected to reverse.
	Deferred tax assets and liabilities as of December 31, 2013 and 2012 consisted of the amounts shown below (in thousands):
		December 31,
		2013		2012
	Deferred tax assets:
	Net operating loss carryforwards	$	8,877	$	10,266
	Stock-based compensation		17,525		17,416
	Acquired intangibles		8,010		13,809
	Tax credits		4,433		3,516
	Capital loss		673		887
	Deferred revenue		3,495		2,736
	Sales and receivables allowances		2,469		1,697
	Other		4,540		1,790
	Total deferred tax assets		50,022		52,117
	Deferred tax liabilities:
	Acquired Intangibles		-24,362		-28,194
	Capitalized software and website development		-10,532		-7,600
	Depreciation and amortization		-8,640		-9,993
	Investments in disposed subsidiaries		-28,595		-31,565
	Other		-5,342		-3,047
	Total deferred tax (liabilities)		-77,471		-80,399
	Deferred tax (liabilities), net		-27,449		-28,282
	Deferred tax asset valuation allowance		-3,270		-4,094
	Total deferred tax (liabilities), net	$	-30,719	$	-32,376
	Our net deferred tax liability was the result of temporary differences between book and tax accounting. Deferred tax assets are recognized subject to managements judgment that realization is more likely than not. Our ability to realize a deferred tax asset is based on our ability to generate sufficient future taxable income. The establishment of a valuation allowance requires an assessment of both positive and negative evidence on a jurisdiction-by-jurisdiction basis and reflects that likelihood of realization of the deferred tax assets.
	Valuation Allowance
	While we had been forecasting sufficient U.S. book taxable income in future periods, at December 31, 2010 we were in a three-year cumulative pretax book loss position in the United States. In connection with the acquisition of Dealertrack Processing Solutions, Inc. we expected that amortization expense associated with the acquired intangibles would also negatively impact our future U.S. income streams. Due to the negative impact from the amortization expense associated with the acquired Dealertrack Processing Solutions, Inc. intangibles we determined that the ultimate realization of deferred tax assets for U.S. federal and state income tax purposes was not considered more likely than not, primarily due to limited taxable income in the federal carry back period, anticipated insufficient future taxable income and cumulative U.S. book losses incurred in recent years. As a result of cumulative U.S. book losses incurred in recent years and uncertainty as to the extent and timing of profitability in future periods, we recorded a full valuation allowance of $28.4 million against our net U.S. deferred tax assets, excluding deferred tax liabilities related to indefinite-lived assets, during the three months ended December 31, 2010.
	As a result of establishing a full valuation allowance against our net U.S. deferred tax assets, excluding deferred tax liabilities related to indefinite-lived assets, we did not recognize any deferred tax benefits related to U.S. operations during the year ended December 31, 2010. We planned to maintain a full valuation allowance on our net U.S. deferred tax assets until sufficient positive evidence existed to support reversal of the valuation allowance.
	As a result of the acquisition of Dealertrack Processing Solutions, Inc., on January 31, 2011, we evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets, and thereby we reduced the valuation allowance by approximately $24.5 million during the three months ended March 31, 2011.
	As a result of the sale of ALG on October 1, 2011, and the establishment of deferred tax liabilities on the transaction along with the expected future reversal of deferred tax liabilities, we reevaluated the need for a full valuation allowance on our net deferred tax assets for the three months  ended December 31, 2011. We determined that the ultimate realization of deferred tax assets for U.S. federal and state income tax purposes is considered more likely than not, primarily due to taxable income in the federal carry back period, anticipated sufficient taxable income and cumulative U.S. book income earned in recent years. During the three months ended December 31, 2011, we reversed a portion of the remaining valuation allowance on our net U.S. deferred tax assets that had been established during the three months ended December 31, 2010.
	Our deferred tax assets have been reduced in accordance with FASB ASC Topic 718, Compensation – Stock Compensation. As such, foreign tax credit carryforwards of $1.3 million and $1.3 million as of December 31, 2013 and 2012, respectively, and net operating losses of $7.2 million as of December 31, 2013 and $4.7 million as December 31, 2012, which were increased due to excess tax benefits from the exercise of stock options and restricted stocks for 2012 and 2011, were not recorded as deferred tax assets. Instead, such amounts will be recorded as an addition to stockholders’ equity and will reduce current taxes payable, in the amounts of approximately $4.0 million as of December 31, 2013 and approximately $3.1 million as of December 31, 2012, if and when the carryovers and net operating losses are utilized.
	As of December 31, 2013, our remaining deferred tax valuation allowance of $3.3 million consisted of $1.2 million for foreign tax credits, $1.4 million for separate state net operating losses and $0.7 million for capital loss carry forward and other adjustments. As of December 31, 2012, our remaining deferred tax valuation allowance of $4.1 million consisted of $2.0 million for foreign tax credits, $1.3 million for separate state net operating losses and $0.8 million for capital loss carry forward and other adjustments.
	As of December 31, 2013 and 2012, we had U.S. federal net operating loss carryforwards of $25.6 million and $29.5 million, respectively,  of which $4.2 million of the current loss carryforwards are subject to limitation under Section 382 of the Internal Revenue Code. These losses are available to reduce future taxable income and expire in varying amounts beginning in 2022. We have state net operating losses which expire at various times and amounts through 2032. We maintain a portion of the valuation allowance on the state net operating losses.
	As of December 31, 2013 and 2012, we had U.S. federal foreign tax credit carryovers of $1.2 million and $2.0 million, respectively. These credits are available to offset future federal income tax subject to limitation and expire in varying amounts beginning in 2018. All Canadian net operating loss carryforwards from prior periods were fully utilized.
	Effective Tax Rate
	The analysis of the effective tax rate for the years ended December 31, 2013,  2012 and 2011, is as follows:
		December 31,
		2013		2012		2011
	Pre-tax book income	35.0	%	35.0	%	35.0	%
	State taxes	-7.5		2.5		1.5
	Foreign rate differential	-25.3		-2.6		-1.1
	Non-deductible expenses	7.3		0.5		0.2
Valuation allowance	-19		-0.5		-36.9
Deferred tax liability impact of disposals and contributions	—		3.7		0.6
Adjust tax balances for filed returns	-2.2		-0.6		-1.9
Transaction costs	9.9		—		—
General business and other tax credits	-33.9		—		-0.6
Executive compensation	7.8		0.8		0.2
State rate change	—		-1.5		—
Other	-1.2		0.2		-0.8
Total	-29.1	%	37.5	%	-3.8	%
The change in effective tax rate for 2013 from 2012 is primarily due to the benefit from general business credits, changes in earnings mix, and the decrease in valuation allowance, including the impact of approved federal filing adjustments. The change in effective tax rate for 2012 from 2011 is primarily due to the valuation allowance activity on our net deferred tax assets, the deferred tax impact of disposals, changes in earnings mix, and the impact of filed and amended tax returns. The impact of amounts included in “other” does not include any additional significant activity impacting the effective tax rate.
Foreign Taxes
We have not provided for U.S. federal income taxes and foreign withholding taxes on $31.5 million of foreign subsidiaries’ undistributed earnings as of December 31, 2013 because such earnings are intended to be indefinitely reinvested. The amount of deferred taxes on the temporary differences related to investments in foreign subsidiaries is not practicable to determine at this time. Permanently reinvested earnings will be used to support our personnel costs as well as costs of our Canadian product offerings, including future development and acquisitions. We believe our current U.S. cash balances and our credit facility provide appropriate liquidity for U.S. operations.
Other
We do not expect any significant increase or decrease in our unrecognized tax benefits within the next 12 months. We account for provisions for uncertain tax positions in accordance with FASB ASC Topic 740, which specifies the way public companies are to account for uncertainty in income taxes and prescribes the methodology for recognizing, reversing, and measuring the tax benefits of a tax position taken, or expected to be taken, in a tax return. Our adoption of FASB ASC Topic 740 did not result in any change to the level of our liability for uncertain tax positions, and there was no adjustment to our retained earnings for the cumulative effect of an accounting change.
We file a consolidated U.S. income tax return and tax returns in various state and local jurisdictions. The Internal Revenue Service has concluded a review of our consolidated federal income tax returns through December 31, 2007 and is currently reviewing our consolidated federal income tax returns for 2009, 2010 and 2011. We have agreed to various adjustments which are included in the current year provision for income taxes, and are awaiting a final report.  New York has concluded their review of our 2006 (amended) and 2007 state tax returns and is currently reviewing our 2008 and 2009 state returns. California has concluded their review of our amended returns filed for 2004, 2005 and 2006. In addition, we are appealing Pennsylvania’s assessment to our 2007, 2008 and 2009 tax return filings. Certain of our subsidiaries also file income tax returns in Canada. The Canadian Revenue Agency has completed their review of our 2009 and 2010 tax return filings with no significant adjustments. All of our other significant taxing jurisdictions are closed for years prior to 2008.
Interest and penalties, if any, related to tax positions taken in our tax returns are recorded in interest expense and general and administrative expenses, respectively, in our consolidated statement of operations. As of December 31, 2013 and 2012, accrued interest and penalties related to tax positions taken on our tax returns is approximately $0.1 million and $0.1 million, respectively.
A year-over-year reconciliation of our liability for uncertain tax positions is as follows (in thousands):
Balance as of January 1, 2011	$	1,031
Additions		244
Settlements		-482
Balance as of December 31, 2011	$	793
Balance as of January 1, 2012	$	793
Additions		226
Expired statute of limitations / settlements		-136
Balance as of December 31, 2012	$	883
Balance as of January 1, 2013	$	883
Additions		292
Expired statute of limitations / settlements		-249
Balance as of December 31, 2013	$	926
As of December 31, 2013,  approximately $0.5 million of the liability for uncertain tax positions recorded in our balance sheet would affect our effective rate upon resolution of the uncertain tax positions.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Information [Abstract]	'
Segment Information	'
	16. Segment Information
	The segment information provided in the table below is being reported consistent with our method of internal reporting. Operating segments are defined as components of an enterprise for which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker reviews information at a consolidated level, as such we have one reportable segment. For enterprise-wide disclosure, we are organized primarily on the basis of service lines.
	Revenue earned in Canada for the years ended December 31, 2013,  2012 and 2011 is approximately 9%, 10% and 9% of our revenue, respectively. Long-lived assets in Canada were $39.7 million, $44.8 million and $35.5 million as of December 31, 2013, 2012 and 2011, respectively.
	Supplemental disclosure of revenue by service type for the years ended December 31, 2013,  2012 and 2011, is as follows (in thousands):
		Year Ended December 31,
		2013		2012		2011
	Transaction services revenue	$	276,861	$	225,011	$	184,892
	Subscription services revenue		181,731		145,148		146,621
	Other		22,942		18,713		21,781
	Total net revenue	$	481,534	$	388,872	$	353,294

Commitments_And_Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Commitments And Contingencies	'
	17. Commitments and Contingencies
	Operating Leases
	We lease our office space and certain office equipment under cancelable and non-cancelable operating leases, which expire on various dates through May 2023. In general, leases relating to real estate include rent escalation clauses relating to increases in operating costs. Some leases also include renewal options of up to 5 years.
	Operating lease expense for the years ended December 31, 2013,  2012 and 2011, was $7.9 million, $7.4 million and $7.3 million, respectively.
	Future minimum rental payments under the non-cancelable operating leases are as follows (in thousands):
	Years Ending December 31,
	2014	$	10,863
	2015		9,327
	2016		7,952
	2017		6,299
	2018		5,943
	Thereafter		11,943
	Total	$	52,327
	We are in the process of negotiating a lease to move our corporate headquarters in Lake Success, New York, to a nearby property due to our expansion and growth.  We are expecting to buy-out our existing lease for approximately $4 million.  The annual rental payments for the headquarters included above are approximately  $2.8 million per year through 2018.
	Capital Leases
	The following is an analysis of the leased property under capital leases by major property class as of December 31, 2013 and 2012 (in thousands):
		December 31,
		2013		2012
	Computer and office equipment	$	407	$	351
	Furniture and fixtures		—		107
			407		458
	Less: Accumulated depreciation		-83		-179
	Total capital leases, net	$	324	$	279
	Future minimum rental payments under the capital leases are as follows (in thousands):
	Years Ending December 31,
	2014	$	100
	2015		98
	2016		74
	2017		32
	2018		—
	Total minimum lease payments		304
	Less: Amount representing taxes, included in total minimum lease payments		-24
	Net minimum lease payments		280
	Less: Amount representing interest		—
	Present value of net minimum lease payments	$	280
	Service Credits
	Under the terms of the purchase agreement with the seller of the AAX business, the parent company of the seller was granted the right to service credits of $2.5 million, which were to be applied against fees that were charged in connection with their purchase of certain future products or services of Dealertrack. These service credits were to expire on December 31, 2015. The service credits were recorded as a reduction in revenue as they were utilized. For the years ended December 31, 2013, 2012 and 2011, we recorded contra revenue related to the service credits of $0.6 million, $0.8 million and $0.9 million, respectively. As of December 31, 2013,  none of the service credits remain.
	Contingencies
	We are a party to a variety of agreements pursuant to which we may be obligated to indemnify the other party with respect to breach of contract, infringement and other matters. Typically, these obligations arise in the context of agreements entered into by us, under which we customarily agree to hold the other party harmless against losses arising from breaches of representations, warranties and/or covenants. In these circumstances, payment by us is generally conditioned on the other party making a claim pursuant to the procedures specified in the particular agreement, which procedures typically allow us to challenge the other party’s claims. Further, our obligations under these agreements may be limited to indemnification of third-party claims only and limited in terms of time and/or amount. In some instances, we may have recourse against third parties for certain payments made by us.
	It is not possible to predict the maximum potential amount of future payments under these or similar agreements due to the conditional nature of our obligations and the unique facts and circumstances involved in each particular agreement. To date, we have not been required to make any material payments. We believe that if we were to incur a loss in any of these matters, it is not probable that such loss would have a material effect on our business or financial condition.
	Refer to Note 9 for additional contingencies resulting from our completed business combinations.
	Refer to Note 20 in regards to certain commitment and contingencies related to our definitive agreement to acquire Dealer.com.
	Retail Sales Tax
	On an ongoing basis, various tax jurisdictions in the United States and Canada conduct reviews or audits regarding the sales taxability of our products. Historically, we have been able to respond to their inquiries without significant additional sales tax liability imposed. However, in the event we are unsuccessful in responding to future inquiries, additional sales tax liabilities may be incurred. If we are obligated to charge sales tax for certain products, we believe our contractual arrangements with our customers obligate them to pay all sales taxes that are levied or imposed by any taxing authority.
	We currently have $0.9 million of pending assessments in one state. In June 2013, an administrative hearing was held on this matter and a decision upholding the original assessment was issued in August 2013. This decision is not considered a final ruling. In September 2013, we filed a complaint with the state tax court requesting that the decision be vacated.  As of December 31, 2013, we have not accrued any amounts related to this assessment as we believe that our position on this matter is correct. We have estimated that potential additional assessments of $0.7 million may exist for periods subsequent to the assessment period based upon a calculation consistent with the pending assessment. We are not able to estimate an amount for penalties due, if any.
	Employment Agreements
	Pursuant to employment or severance agreements with certain team members, we have a commitment to pay severance of approximately $6.3 million as of December 31, 2013, in the event of termination without cause, as defined in the agreements, as well as certain potential gross-up payments to the extent any such severance payment would constitute an excess parachute payment under the Internal Revenue Code. Additionally, in the event of termination without cause due to a change in control, we would also have a commitment to pay additional severance of approximately $2.4 million as of December 31, 2013.
	Legal Proceedings
	From time to time, we are a party to litigation matters arising in connection with the ordinary course of business, none of which is expected to have a material adverse effect on our financial position, results of operations or cash flows. There are no litigation matters exclusive of those arising in connection with the ordinary course of our business.

Agreements_Impacting_ContraRev

Agreements Impacting Contra-Revenue	12 Months Ended
	Dec. 31, 2013
Agreements Impacting Contra-Revenue [Abstract]	'
Agreements Impacting Contra-Revenue	'
	18. Agreements Impacting Contra-Revenue
	In February 2010, Dealertrack entered into a strategic relationship with Ally Financial (Ally). Under the terms of the agreement, Ally became  a financing option on the Dealertrack credit application processing network and Dealertrack agreed to make a one-time payment to Ally of $15.0 million, which was paid in May 2010. Ally continues to accept credit applications through a competitive system, of which it owns a portion. The one-time $15.0 million payment is recorded as a reduction in transaction services revenue over the period of expected benefit of approximately five years. For the years ended December 31, 2013,  2012 and 2011, we recorded contra-revenue related to revenue earned from the Ally strategic relationship of $3.1 million, $3.1 million and $3.2 million, respectively.
	In February 2013, we announced an exclusive, long-term partnership agreement with American Honda Finance Corporation (AHFC). As part of this agreement, Dealertrack and AHFC will design and develop a solution with a strategic focus on streamlining the vehicle sales and finance process while improving the overall customer buying experience. The workflow solution is expected to rollout in multiple phases with the first phase to launch in 2014. As part of the agreement, Dealertrack has agreed to reimburse AHFC up to $11.0 million of qualified expenses on an as incurred basis, in connection with development, implementation, and integration of the solution over the first three years of the agreement. These payments will be recorded as deferred costs and will be recognized as a reduction of revenue (contra-revenue) over the term of the agreement commencing with the launch.  As of December 31, 2013, $0.3 million of qualified expenses were paid.  An additional $5.0 million of qualified expenses were paid in January 2014.
	As of December 31, 2013,  $8.6 million of the payments to Ally, Honda and other customers remain to be amortized as contra-revenue, of which, $4.9 million are recorded in prepaid expenses and other current assets and $3.7 million are recorded in other long-term assets. As of December 31, 2012,  $12.6 million of payments remained to be amortized as contra-revenue, of which, $4.4 million was classified in prepaid expenses and other current assets and $8.2 million in other long-term assets.

Contribution_To_Chrome_Data_So

Contribution To Chrome Data Solutions And Disposal Of ALG	12 Months Ended
	Dec. 31, 2013
Contribution To Chrome Data Solutions And Disposal Of ALG [Abstract]	'
Disposal Of ALG	'
	19.  Contribution to Chrome Data Solutions and Disposal of ALG
	Contribution to Chrome Data Solutions
	On January 1, 2012, we completed the series of transactions provided for in the Omnibus Agreement dated December 20, 2011 by and among Chrome Systems, Inc., our wholly-owned subsidiary (Chrome), Autodata Solutions, Inc. (Autodata) and Autodata Solutions Company, subsidiaries of Internet Brands Inc., and AutoChrome Company (the Omnibus Agreement). The Omnibus Agreement provided for the formation of a 50%/50% joint venture named “Chrome Data Solutions” through the organization of (i) a Delaware limited liability company, (ii) a Delaware limited partnership that is a subsidiary of such limited liability company and (iii) a Nova Scotia unlimited liability company (collectively, the Joint Venture), pursuant to which the parties would collaboratively develop, market and sell automotive content products and services. Pursuant to the Omnibus Agreement, the Joint Venture was formed by the following steps, among others:  (a) Chrome contributed substantially all of its assets and liabilities to the Joint Venture; (b) Autodata contributed substantially all of the assets and liabilities of its content division (other than assets to be exclusively licensed to the Joint Venture, as described in the following clause (c)) to the Joint Venture; (c) Autodata exclusively licensed certain of its intellectual property to the Joint Venture; (d) Dealertrack received a perpetual, irrevocable license to use certain Joint Venture intellectual property and data in its products and services; and (e) the parties entered into agreements to form and govern the Joint Venture and provide for certain other matters concerning the Joint Venture. The board of the Joint Venture consists of two members from each contributing party, one of which serves as the chair on a rotating basis. As a result of the ownership level and governance, we have significant influence over the operations of the entity, and therefore we account for the investment under the equity method of accounting.
	As a result of the contribution, we recognized a pre-tax gain of approximately $27.7 million, calculated as follows (in thousands):
	Cash	$	1,750
	Property and equipment		3,947
	Goodwill		7,874
	Intangible assets		2,017
	Other assets and liabilities, net		769
	Carrying value of contributed net assets of Chrome		16,357
	Total consideration received (50% of the fair value of shares received)		44,050
	Pre-tax gain	$	27,693
	For further information on our equity method investment in Chrome Data Solutions, see Note 8.
	Disposal of ALG
	On October 1, 2011, we sold our wholly-owned subsidiary, ALG, to TrueCar in a transaction structured as a tax-free reorganization. In consideration for the sale of ALG, we were to receive a 15.0% equity interest in TrueCar and a warrant to increase our ownership interest to up to 19.9%. The warrant was subsequently exercised during 2012. In a separate series of transactions, TrueCar completed a new equity financing raise with other investors. To maintain our 15.0% ownership upon the closing of the transaction on October 1, 2011, we made an additional investment in TrueCar in the amount of $7.5 million through cash remaining on the balance sheet of ALG on the date of sale.
	The investment in TrueCar was recorded in the amount of $88.0 million, consisting of $82.5 million representing the fair value of the shares received for ALG (including the additional $7.5 million cash investment) and $5.5 million representing the fair value of the warrant received. The investment is accounted for as a cost method investment and the warrant was marked to market through its exercise date. For further information on this investment,  see Note 8.
	We also recorded an intangible asset in the amount of $5.6 million, representing the fair value of a perpetual, royalty-free license received from TrueCar for the future use of certain ALG intellectual property and data in our products and services. The data license is being treated as additional consideration received and is being amortized on a straight-line basis, which reflects its economic benefit, over its estimated useful life of five years.
	As a result of the sale, we recognized a pre-tax gain of approximately $47.3 million, calculated as follows (in thousands):
	Fair value of the shares received	$	75,000
	Additional cash investment		7,500
	Fair value of the warrant received		5,500
	Fair value of the data license		5,600
	Consideration received		93,600
	Cash		7,500
	Property and equipment		1,753
	Goodwill		33,127
	Intangible assets		2,531
	Other assets and liabilities, net		1,368
	Less: Carrying value of net assets		46,279
	Pre-tax gain	$	47,321
	We also entered into additional commercial arrangements with TrueCar for its use of certain Dealertrack and Chrome intellectual property and data in its products and services.
	In connection with the sale of ALG to TrueCar, we agreed that if we sell our TrueCar shares (including TrueCar shares purchased through the warrant) within three years after the closing for gross cash proceeds of more than $125.0 million, we will pay to TrueCar the excess over that amount up to a maximum of $7.0 million, subject to certain other limitations. In February 2014, we signed agreements to sell all of shares in TrueCar. The sale of our shares in TrueCar, Inc. did not give rise to any obligations to pay TrueCar any portion of the consideration received from the sale.
	Revenue from the ALG business amounted to approximately $7.6 million through the disposal date of October 1, 2011, and approximately $8.6 million for the year ended December 31, 2010.
	We expensed approximately $2.4 million of professional fees associated with the transaction in the year ended December 31, 2011.

Acquisition_of_Dealercom

Acquisition of Dealer.com	12 Months Ended
	Dec. 31, 2013
Acquisition of Dealer.com [Abstract]	'
Acquisition of Dealer.com	'
	20. Acquisition of Dealer.com
	In December 2013, we announced a definitive agreement to acquire Dealer Dot Com, Inc. (Dealer.com), a leading provider of marketing and operations software and services for the automotive industry. Established in 1998, Dealer.com is a pioneer in bringing automotive dealerships online. The company has grown to 830 employees across its Burlington, Vermont, headquarters and Manhattan Beach, California, office, and serves approximately 7,000 U.S. dealers with its integrated suite of products.
	Under the terms of the agreement, we will acquire all the equity of Dealer.com for approximately 8.7 million shares of our common stock and approximately $620 million in cash, subject to customary post-closing adjustments. We expect to finance the cash portion of the purchase price through cash on hand and with fully committed debt financing. The acquisition, which is no longer subject to regulatory approval, is expected to close in the first quarter of 2014.
	Upon termination of the definitive agreement, under specified circumstances involving a failure by the debt financing sources to fund the debt financing, we will be required to pay a termination fee equal to $25.0 million.
	We expect to finance the cash portion of the merger consideration through a combination of new senior secured facilities and cash on hand and have received a commitment letter from JPMorgan Chase Bank, N.A., Bank of America, N.A., Barclays Bank PLC, and Wells Fargo Bank, National Association to provide up $825 million in senior secured debt financing, including up to $575 million under a senior first priority term loan facility and up to $200 million under a senior first priority secured revolving credit facility. The commitment letter is subject to customary conditions to consummation.  We have agreed to pay the financing banks certain fees in connection with the commitment letter and have agreed to indemnify the financing banks against certain liabilities.
	We expensed approximately $2.4 million of professional fees associated with the acquisition in the three and twelve months ended December 31, 2013.  Exclusive of financing banks fees, we expect additional professional fees of $6.0 million to be incurred.

Subsequent_Events

Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	21. Subsequent Events
	In February 2014, we signed agreements to sell all of our shares in TrueCar. We expect to receive proceeds of $92.5 million from the sale of the shares, which have a carrying value of $82.7 million. We expect this to result in an estimated pre-tax gain of $9.8 million. We expect to pay approximately $22 million of cash taxes on the sale on a taxable gain of $58.8 million. The closing of the transaction is subject to customary closing conditions and is expected to be completed in the first quarter of 2014. We intend to use the net after-tax proceeds from the sale as part of the purchase consideration for the acquisition of Dealer.com.

Valuation_And_Qualifying_Accou

Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Valuation And Qualifying Accounts [Abstract]	'
Valuation And Qualifying Accounts	'
	DEALERTRACK TECHNOLOGIES, INC.
	SCHEDULE II
	VALUATION AND QUALIFYING ACCOUNTS
			Balance at		Additions						Balance
			Beginning of		Charged to				Other		End of
	Description		Period		Expenses		Deductions		Adjustments		Period
			(in thousands)
	As of December 31, 2013:
	Allowance for doubtful accounts		$	1,080	$	2,937	$	-2,802	$	280	$	1,495
	Allowance for sales credits			3,478		7,075		-5,124		—		5,429
	Deferred tax valuation allowance			4,094		329		-1,153		—		3,270	(1)
	As of December 31, 2012:
	Allowance for doubtful accounts		$	1,435	$	2,519	$	-2,725	$	-149	$	1,080
	Allowance for sales credits			3,667		4,787		-4,988		12		3,478
	Deferred tax valuation allowance			4,198		134		-238		—		4,094	(2)
	As of December 31, 2011:
	Allowance for doubtful accounts		$	652	$	2,324	$	-2,017	$	476	$	1,435
	Allowance for sales credits			2,606		4,684		-3,699		76		3,667
	Deferred tax valuation allowance			32,637		121		-28,560		—		4,198	(3)
	-1	For the year ended December 31, 2013, the deferred tax valuation allowance was reduced by $0.8 million. The deferred tax valuation allowance was reduced by $0.1 million for our capital loss carryforwards and $0.7 million for foreign tax credits. We evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets. For further information, please refer to Note 15 in the accompanying notes to the consolidated financial statements included in this Annual Report on Form 10-K.
	-2	For the year ended December 31, 2012, the deferred tax valuation allowance was reduced by $0.1 million. The deferred tax valuation allowance was reduced by $0.2 million for our capital loss carryforwards, offset by a $0.1 million increase related to state and local net operating loss carryovers and foreign tax credits. We evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets. For further information, please refer to Note 15 in the accompanying notes to the consolidated financial statements included in this Annual Report on Form 10-K.
	-3	For the year ended December 31, 2011, the deferred tax valuation allowance was reduced by $28.4 million including a $25.1 million reduction as a result of the acquisition of Dealertrack Processing Solutions, Inc. and the sale of ALG, Inc. The deferred tax valuation allowance was also reduced by $3.3 million for current year activity of our deferred tax assets and liabilities positions, $0.1 million for our capital loss carryforwards, offset by a $0.1 million increase related to state and local net operating loss carryovers. We evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets. For further information, please refer to Note 15 in the accompanying notes to the consolidated financial statements included in this Annual Report on Form 10-K.

Business_Description_And_Basis1

Business Description And Basis Of Presentation (Policy)	12 Months Ended
	Dec. 31, 2013
Business Description And Basis Of Presentation [Abstract]	'
Basis Of Presentation	'
	Basis of Presentation
	The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP).
	The accompanying consolidated financial statements include the accounts of Dealertrack Technologies, Inc. and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated.

Significant_Accounting_Policie

Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2013
Summary Of Significant Accounting Policies [Abstract]	'
Use Of Estimates	'
	Use of Estimates
	The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and the disclosure of contingent amounts in our consolidated financial statements and the accompanying notes. Actual results could differ from those estimates.
	On an on-going basis, we evaluate our estimates, including those related to revenue recognition, allowance for doubtful accounts, the fair value of financial assets, acquired intangible assets, goodwill, contingent consideration, and other assets and liabilities; the useful lives of intangible assets, property and equipment, capitalized software and website development costs; assumptions used to calculate stock-based compensation including volatility, expected life and forfeiture rate; and income taxes (including recoverability of deferred taxes), among others. We base our estimates on historical experience and on other various 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.
Revenue Recognition	'
	Revenue Recognition
	We recognize revenue when the following fundamental criteria are met: (i) persuasive evidence of an arrangement exists, (ii) delivery has occurred or the services have been rendered, (iii) the fee is fixed or determinable, and (iv) collection of the resulting receivable is reasonably assured.
	Our revenue is presented net of a provision for sales credits, which is estimated based on historical results, and established in the period in which services are provided.
	Transaction Services Revenue
	Lender Transaction Services Revenue
	Lender transaction services revenue consists of transaction revenue earned from our lender customers for (1) each electronic receipt of credit application or contract data that dealers submit to them through the Dealertrack credit application network; (2) for each financing contract executed via our electronic contracting and digital contract processing solution; (3) for collateral management transactions; and (4) for any data services performed.
	Credit Application Transaction Revenue
	Our web-based credit application network facilitates the online credit application process by enabling dealers to transmit a consumer’s credit application information to one or more lenders. Credit application revenue consists of revenue earned on a per transaction basis and set-up fees charged to lenders for establishing connections. Transaction revenue is earned upon the electronic receipt of the credit application data and set-up fees are recognized ratably over the expected customer relationship period of four years.
	Electronic and Digital Contracting Transaction Revenue
	Our eContracting product allows dealers to obtain electronic signatures and provide contract information electronically to lender customers that participate in the solution. Our digital contract processing service receives paper-based contracts from dealers, digitizes the contract and submits them in electronic format to the respective lenders. Electronic and digital contracting revenue is recognized on a per transaction basis after services have been rendered.
	Collateral Management Services Transaction Revenue
	Our collateral management solution provides vehicle title and administration services for our customers, which are comprised mainly of lenders. The solution facilitates communication between our customers and the state department of motor vehicles by providing a solution for our customers to monitor title perfection and expedite the processing of liens with the state department of motor vehicles. We offer both paper-based and electronic-based title services depending on state requirements. Customer contracts for title services are principally comprised of two elements: (1) title perfection confirmation and (2) title administration.
	For paper-based titles, title perfection confirmation occurs upon the receipt of title and lien documentation supporting title perfection from the department of motor vehicles. For electronic-based titles, title perfection confirmation is achieved upon electronic acknowledgement that department of motor vehicles’ records reflect the customer as the lien holder.
	For paper-based titles, title administration services require us to physically hold, store and manually release the title. For electronic-based titles, title administration services require data storage. The release of the electronic title can be accomplished by the lien holder and does not require manual action by us.
	Deliverables for paper and electronic title management arrangements are separated into more than one unit of accounting when (i) the delivered element(s) have value to the customer on a stand-alone basis, (ii) delivery of the undelivered element(s) is probable and substantially in our control, and (iii) relative selling price is determined.
	Based on the above criteria, paper and electronic-based collateral management service revenue are separated into two units of accounting. We recognize a portion of the paper-based transaction fee upon receipt of title and lien documentation supporting title perfection from the department of motor vehicles. For electronic-based titles, we recognize a portion of the fee upon electronic acknowledgement that the department of motor vehicles’ records reflect the customer as the lien holder. For paper-based title services, amounts allocated to each unit of accounting are based upon vendor-specific objective evidence. For electronic-based title services, amounts allocated to each unit of accounting are based upon estimated selling price, which is based upon an adjustment to the selling price of our individual paper-based title services, when sold separately. The adjustment to the selling price is due to the lower selling price of electronic-based services compared to paper-based services.
	For customers in which we bill the entire transaction fee in advance, the title administration portion of the fee for both paper and electronic-based titles is deferred and recognized over the title administration period, which is estimated at approximately three years. This estimate is based upon a historical analysis of the average time period between the date of financing and the date of pay-off.
	Collateral management services revenue also includes revenue earned from converting a new customer’s title portfolio to our collateral management solution, which may include other ancillary services. Amounts earned from converting a new customer’s portfolio are recognized over the customer’s estimated portfolio loan life which varies depending on the customer. Amounts earned from other ancillary services are recognized on a per transaction basis after services have been rendered.
	Data Services Transaction Revenue
	Data service solutions are designed to help lenders analyze investment risk through detailed study of return rates and historic market trends. Whether a lender portfolio consists of leases, loans, or both, our data service products will analyze lenders automotive investments for maximum return. Data services revenue is recognized on a per record basis after services have been rendered.
	Dealer and Other Service Provider Transaction Services Revenue
	Registration Transaction Revenue
	Our registration and titling services solution provides various web-based and service-bureau based automotive vehicle registration services to customers. Registration and titling services revenue is recognized on a per transaction basis after services have been rendered.
	Aftermarket Transaction Revenue
	The Dealertrack Aftermarket Network streamlines and integrates the entire aftermarket sales and submission process. Aftermarket solution providers connected to the Dealertrack Aftermarket Network enable their dealers to have free access to real-time information needed to make aftermarket sales decisions. Aftermarket services revenue is recognized on a per transaction basis after services have been rendered.
	Credit Bureau Transaction Revenue
	Our credit bureau service provides our dealer customers the ability to access credit reports from several reporting agencies or resellers online. We offer these credit reports on both a reseller and agency basis. We recognize credit bureau revenue on a per transaction basis after services have been rendered. Credit bureau revenue is recognized from all but one credit bureau provider on a net basis due to the fact that we are not considered the primary obligor, and recognized on a gross basis from one provider as we have risk of loss and are considered the primary obligor in the transaction.
	Other Transaction Revenue
	Other transaction revenue includes revenue from appraisal solutions that provide dealers the ability to complete real-time vehicle appraisals as well as revenue from compliance solutions. This transaction revenue is recognized on a per transaction basis after services have been rendered.
	Subscription Services Revenue
	Subscription services revenue consists of revenue earned from primarily our dealers and other customers (typically on a monthly basis) for use of our subscription products and services. Our subscription services enable dealer customers to manage their dealership data and operations, compare various financing and leasing options and programs, sell insurance and other aftermarket products, analyze, merchandise, advertise, and transport their inventory and execute financing contracts electronically. Revenue is recognized from such contracts ratably over the contract period. Set-up fees, if applicable, are recognized ratably over the expected dealer customer relationship period, which is generally 36 to 60 months. For contracts that contain two or more subscription products and services, we recognize revenue in accordance with the above policy using relative selling price when the delivered products have stand-alone value.
	We record revenue for search engine optimization (SEO) and search engine marketing (SEM) based on the assessment of multiple factors, including whether we are the primary obligor to the arrangement and whether we maintain latitude in establishing price. In instances in which we are the primary obligor with discretion regarding price, we record the total amounts received from customers within subscription services revenue, and online search provider payments as cost of revenue. In instances in which we are paid by customers to recommend allocation of their budgeted spend, we record subscription services revenue for the net amounts paid to us by our customers. In this latter instance, our customers budgeted spend and amounts paid to the online search providers do not impact our consolidated results of operations.
	Other Revenue
	Other revenue consists of revenue primarily earned through forms programming, data conversion, hardware and equipment sales from our Dealer Management solution, shipping commissions earned from our digital contract business, and consulting and analytical revenue earned from ALG in periods prior to its disposal in 2011. Training fees are also included in other revenue. Other revenue is recognized when the service is rendered.
Shipping Costs	'
	Shipping Costs
	Shipping charges billed to customers are included in net revenue and the related shipping costs are included in cost of revenue.
Cash And Cash Equivalents	'
	Cash and Cash Equivalents
	Cash and cash equivalents consist of cash and highly liquid investments purchased with original maturity of three months or less.
Marketable Securities	'
	Marketable Securities
	Marketable securities consist of U.S. treasury and agency securities, corporate bonds, municipal bonds and a tax-advantaged preferred security. All of our marketable securities are classified as available-for-sale securities and are recorded at fair value. Unrealized gains and losses, net of the related tax effect, are reported as a separate component of accumulated other comprehensive income until realized. Realized gains and losses are included as a component of other income, net, in the consolidated statement of operations and are calculated based on the specific identification method.
Customer Funds	'
	Customer Funds
	Under contractual arrangements, our registration and titling services solution collects funds from our customers and remits such amounts to the various state departments of motor vehicle registries (registries). Customer funds receivable primarily represents transactions processed by our customers for which we have not collected our fees or the fees payable to the various registries. In addition, payments made to the various registries in advance of receipt from the customer, are recorded as customer funds receivable. Customer funds payable primarily includes transactions processed by our customers for which we have not remitted the fees to the various registries. Customer funds are maintained in separate bank accounts and are segregated from our operating cash.
Translation Of Non-U.S. Currencies	'
	Translation of Non-U.S. Currencies
	We have maintained business operations in Canada since January 1, 2004. The translation of assets and liabilities denominated in foreign currency into U.S. dollars is made at the prevailing rate of exchange at the balance sheet date. Revenue, costs and expenses are translated at the average exchange rates during the period. Translation adjustments are reflected in accumulated other comprehensive income on our consolidated balance sheets, while gains and losses resulting from foreign currency transactions are included in our consolidated statements of operations. Amounts resulting from foreign currency transactions included in our statement of operations were not material for the years ended December 31, 2013,  2012 and 2011.
Allowance For Doubtful Accounts	'
	Allowance for Doubtful Accounts
	We maintain an allowance for doubtful accounts for estimated losses resulting from the inability of our customers to make required payments. The amount of the allowance account is based on historical experience and our analysis of the accounts receivable balances outstanding. While credit losses have historically been within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same credit loss rates that we have in the past. If the financial condition of our customers were to deteriorate, resulting in their inability to make payments, additional allowances may be required which would result in an additional expense in the period that this determination was made.
Property, Equipment And Depreciation	'
	Property, Equipment and Depreciation
	Property and equipment are stated at cost less accumulated depreciation, which is provided for by charges to income over the estimated useful lives of the assets using the straight-line method. Maintenance and repairs are charged to operating expenses as incurred. Upon sale or other disposition, the applicable amounts of asset cost and accumulated depreciation are removed from the accounts and the net amount, less proceeds from disposal, is charged or credited to income. Depreciation expense for the year ended December 31, 2013 included $0.2 million of accelerated depreciation of certain property and equipment due to the discontinuation of their use.
Software And Website Development Costs And Amortization	'
	Software and Website Development Costs and Amortization
	We capitalize costs of materials, consultants, payroll and payroll-related costs incurred by team members involved in developing internal use computer software. Costs incurred during the preliminary project and post-implementation stages are charged to expense. Software and website development costs are amortized on a straight-line basis over estimated useful lives. Capitalized costs are generally amortized over two years while our platform updates are amortized over five years and costs related to our SAP ERP implementation and salesforce.com implementation are amortized over seven years. We perform periodic reviews to ensure that unamortized software and website costs remain recoverable from future revenue. Capitalized software and website development costs, net, were $62.5 million and $46.2 million as of December 31, 2013 and 2012, respectively. Amortization expense totaled $19.1 million, $13.9 million and $12.3 million for the years ended December 31, 2013,  2012 and 2011, respectively. Amortization expense for the year ended December 31, 2012 included $1.0 million of accelerated depreciation of certain technology assets due to the discontinuation of those projects.
Goodwill	'
	Goodwill
	We record as goodwill the excess of purchase price over the fair value of the tangible and identifiable intangible assets acquired. Goodwill is tested annually for impairment as well as whenever events or circumstances change that would make it more likely than not that an impairment may have occurred. Goodwill is tested for impairment using a two-step approach. The first step tests for potential goodwill impairment by comparing the fair value of our one reporting unit to its carrying value. If the fair value of the reporting unit is less than its carrying value, the second step is to calculate and record an impairment loss to the extent that the implied fair value of the goodwill of the reporting unit is less than the carrying value of goodwill.
	Goodwill is required to be assessed at the operating segment or lower level. We determined that the components of our one operating segment have similar economic characteristics, nature of products, distribution, shared resources and type of customer such that the components should be aggregated into a single reporting unit for purposes of performing the impairment test for goodwill. We perform our annual impairment analysis as of the first day of the fourth quarter. The evaluation of impairment involves comparing the current estimated fair value of our reporting unit to the carrying value, including goodwill. We estimate the fair value of our reporting unit by primarily using a market capitalization approach, and also looking at the outlook for the business. The results of our most recent annual assessments performed on October 1, 2013 and 2012 did not indicate any impairment of our goodwill. In each year, the fair value of our reporting unit was significantly in excess of the carrying value, which includes goodwill. As of October 1, 2013, our market capitalization was approximately $1.9 billion compared to our book value, including goodwill, of approximately $602 million.
Intangibles And Long-Lived Assets	'
	Intangibles and Long-lived Assets
	We evaluate our long-lived assets, including property and equipment and finite-lived intangible assets for potential impairment on an individual asset basis or at the lowest level asset grouping for which cash flows can be separately identified. Intangible asset impairments are assessed whenever changes in circumstances could indicate that the carrying amounts of those productive assets exceed their projected undiscounted cash flows. When it is determined that impairment exists, the related asset group is written down to its estimated fair value. The determination of future cash flows and the estimated fair value of long-lived assets, involve significant estimates on the part of management. In order to estimate the fair value of a long-lived asset, we may engage a third party to assist with the valuation.
	Our process for assessing potential triggering events may include, but is not limited to, analysis of the following:
		·		any sustained decline in our stock price below book value;
		·		results of our goodwill impairment test;
		·		sales and operating trends affecting products and groupings;
		·		the impact on current and future operating results related to industry statistics including fluctuation of lending relationships between financing sources and automobile dealers, actual and projected annual vehicle sales, and the number of dealers within our network;
		·		the impact of acquisitions on the use of pre-existing long-lived assets;
		·		any losses of key acquired customer relationships; and
		·		changes to or obsolescence of acquired technology, data, and trademarks.
	We also evaluate the remaining useful life of our long-lived assets on a periodic basis to determine whether events or circumstances warrant a revision to the remaining estimated amortization period.
Equity Method Accounting	'
	Equity Method Accounting
	We apply the equity method of accounting to investments in entities in which we own more than 20% of the equity of the entity and exercise significant influence.
Senior Convertible Notes	'
	Senior Convertible Notes
	In accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 470-20, Debt with Conversion and Other Options, we separately account for the liability and equity components of our senior convertible notes. The estimated fair value of the liability component is computed based on an assessment of the fair value of a similar debt instrument that does not include a conversion feature. The equity component, which is recognized as a debt discount and recorded in additional paid-in capital, represents the difference between the gross proceeds from the issuance of the notes and the estimated fair value of the liability component at the date of issuance. The debt discount is amortized over the expected life of a similar liability without the equity component. The effective interest rate used to amortize the debt discount was based on our estimated non-convertible borrowing rate of a similar liability without an equity component as of the date the notes were issued.
Income Taxes	'
	Income Taxes
	We account for income taxes in accordance with the provisions of FASB ASC Topic 740, Accounting for Income Taxes (ASC Topic 740), which requires deferred tax assets and liabilities to be recognized for the future tax consequences attributable to differences between the consolidated financial statement carrying amounts of assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be reversed. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred tax assets will not be realized.
	Uncertain tax positions are recorded in our consolidated balance sheet in accrued liabilities – other. Interest and penalties, if any, related to tax positions taken in our tax returns are recorded in interest expense and general and administrative expenses, respectively, in our consolidated statement of operations.
Advertising Expenses	'
	Advertising Expenses
	We expense the cost of advertising and promoting our services as incurred. Such costs are included in selling, general and administrative expenses in the consolidated statements of operations and totaled $0.6 million, $0.5 million and $0.8 million for the years ended December 31, 2013,  2012 and 2011, respectively.
Concentration Of Credit Risk	'
	Concentration of Credit Risk
	Our assets that are exposed to concentrations of credit risk consist primarily of cash, cash equivalents, short-term and long-term marketable securities and receivables from clients. We place our cash, cash equivalents, short-term and long-term marketable securities with financial institutions. We regularly evaluate the creditworthiness of the issuers in which we invest. Our trade receivables are spread over many customers. We maintain an allowance for uncollectible accounts receivable based on expected collectability and perform ongoing credit evaluations of customers’ financial condition.
	Our revenue is generated from customers in the automotive retail industry. As of December 31, 2013 and 2012, no customer accounted for more than 10% of our accounts receivable. For the three years ended December 31, 2013, no customer accounted for more than 10% of our revenue.
Net Income Per Share	'
	Net Income Per Share
	Basic earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated by dividing net income by the weighted average number of common shares outstanding, assuming dilution, during the period. The diluted earnings per share calculation assumes (i) all stock options which are in the money are exercised at the beginning of the period, (ii) if applicable, unvested awards that are considered to be contingently issuable shares because they contain either a performance or market condition will be included in diluted earnings per share if dilutive and if their conditions have (a) been satisfied at the reporting date or (b) would have been satisfied if the reporting date was the end of the contingency period, and (iii) if applicable, potential common shares which may be issued to satisfy the conversion spread value of our senior convertible notes.
	The number of shares included in the denominator of diluted earnings per share relating to our senior convertible notes is calculated by dividing the conversion spread value by the average share price of our common stock during the period. The conversion spread value is the value that would be delivered to investors based on the terms of the notes, at the assumed conversion date.
	The following table sets forth the computation of basic and diluted net income per share for the years ended December 31, 2013,  2012 and 2011 (in thousands, except per share amounts):
			December 31,
			2013				2012				2011
	Numerator:
	Net income		$	5,894			$	20,454			$	65,135
	Denominator:
	Weighted average common stock outstanding (basic)			43,616				42,508				41,270
	Common equivalent shares from options to purchase common stock and restricted common stock units			1,709				1,491				1,257
	Potential common shares related to convertible senior notes			—				—				—
	Weighted average common stock outstanding (diluted)			45,325				43,999				42,527
	Basic net income per share		$	0.14			$	0.48			$	1.58
	Diluted net income per share		$	0.13			$	0.46			$	1.53
	The following is a summary of the weighted average securities outstanding during the respective periods that have been excluded from the diluted net income per share calculation because the effect would have been antidilutive (in thousands):
			December 31,
			2013				2012				2011
	Stock options			155				653				1,303
	Restricted stock units			11				262				73
	Performance stock units			8				—				79
	Senior convertible notes			—				—				—
	Total antidilutive awards			174				915				1,455
	In regards to our senior convertible notes, it is our intent to settle the par value of the notes in cash, and we expect to have the liquidity to do so. As a result, there would be no potential impact to diluted earnings per share unless the average share price of our common stock for the respective periods exceeds the conversion price of $37.37, with additional dilution if the average share price exceeds the warrant strike price of $46.18.
	For the years ended December 31, 2013 and 2012, the average share price of our common stock did not exceed the conversion price of $37.37; therefore, there was no impact to diluted earnings per share.  The average share price of our common stock did exceed the conversion price of $37.37 for the third and fourth quarter of 2013, in which the impact was 288 thousand and 546 thousand diluted shares, respectively.
	For the years ended December 31, 2013 and 2012, the average share price of our common stock did not exceed the warrant strike price of $46.18; therefore, there was no additional impact to our diluted earnings per share calculations.
Stock-Based Compensation Expense And Assumptions	'
	Stock-Based Compensation Expense and Assumptions
	Stock-Based Compensation Expense
	Stock-based compensation is measured at the grant date based on the fair value of the award, and recognized as an expense over the requisite service period, net of an estimated forfeiture rate. We currently have three types of stock-based compensation awards: stock options, restricted stock units and performance stock units. There are no longer any restricted common stock awards outstanding.
	The following summarizes stock-based compensation expense recognized for the three years ended December 31, 2013,  2012 and 2011 (in thousands):
			Year Ended December 31,
			2013			2012			2011
	Stock options		$	4,020		$	4,608		$	4,941
	Restricted stock units			8,223			7,101			5,293
	Performance stock units			2,148			1,883			1,057
	Restricted common stock			—			—			321
	Total stock-based compensation expense		$	14,391		$	13,592		$	11,612
	The expense recorded to performance stock units includes expense related to the Revenue Performance Awards, the Adjusted Net Income (ANI) Performance Awards and the Total Shareholder Return (TSR) Performance Awards for the years ended December 31, 2013, 2012 and 2011 is as follows (in thousands):
			December 31,
			2013				2012				2011
	TSR Performance Awards			1,013				1,051				605
	Revenue Performance Awards			395				—				—
	ANI Performance Awards			740				832				452
	Total			2,148				1,883				1,057
	The income tax benefit related to stock-based compensation expense for the years ended December 31, 2013,  2012 and 2011, was $5.2 million, $5.0 million, and $4.2 million, respectively.
	A summary of the unamortized stock-based compensation expense and associated weighted average remaining amortization periods for stock options, restricted stock units and performance stock units is presented below:
							Unamortized				Weighted
							Stock-Based				Average
							Compensation				Amortization
							Expense				Period
							(in thousands)				(in years)
	Stock options							7,155				2.40
	Restricted stock units							15,936				2.29
	Performance stock units							2,573				0.96
	Stock-Based Compensation Assumptions and Vesting Requirements
	Determining the appropriate fair value model and calculating the fair value of stock-based payment awards require the input of highly subjective assumptions, including the expected life, expected stock price volatility, and the number of awards that will be forfeited prior to the completion of the vesting requirements. We use Black-Scholes-Merton and binomial lattice-based valuation pricing models to value our stock-based awards.
	Expected Life
	Beginning in 2013, the expected life of any issued stock-based awards is based upon our historical exercise patterns and the period of time that the awards are expected to be outstanding. Previously, due to our limited public company history, the expected life was determined based upon the experience of similar entities whose shares are publicly-traded. The expected life for stock-based awards granted prior to December 31, 2007 was determined based on the “simplified” method, due to our limited public company history.
	Expected Stock Price Volatility
	The expected volatility of any stock-based awards we issue is based on our historical volatility. Previously, due to our limited public company history, the expected volatility for stock-based awards was determined using a time-weighted average of our historical volatility and the expected volatility of similar entities whose common shares are publicly-traded.
	Risk-Free Interest Rate and Dividend Yield
	The risk-free interest rates used for all stock-based awards granted were the actual U.S. Treasury zero-coupon rates for bonds matching our expected life of an option on the date of grant.
	The expected dividend yield is not applicable to our stock-based award grants as we have not paid any dividends on our common stock. We do not anticipate declaring or paying cash dividends on our common stock, and we are currently limited in doing so pursuant to our credit facility.
	Option Vesting Requirements
	Options granted generally vest over a period of four years (three years for directors) from the vesting commencement date.  Options granted generally expire seven years from the date of grant, except for stock options granted prior to July 11, 2007, which expire ten years from the date of grant. Options, to the extent unvested, expire on the date of termination of employment, and to the extent vested, generally expire at the end of the three-month period following termination of employment, except in the case of executive officers, who under certain conditions have a twelve-month period following termination of employment to exercise.
	Restricted Stock Unit Vesting Requirements
	Restricted stock units granted are generally subject to an annual cliff vest over four years (one year for directors) from the vesting commencement date, with the exception of performance stock unit awards.
	Performance Stock Unit Vesting Requirements
	The performance stock unit awards for 2013 are earned upon the achievement of revenue and total shareholder return targets and the grantee’s continuous employment in active service until the final vest date, which is approximately three years from the grant date.  The performance stock unit awards for 2012 and 2011 are earned upon the achievement of adjusted net income and total shareholder return targets and the grantee’s continuous employment in active service until the final vest date, which is approximately three years from the grant date.
	Long Term Incentive Plan (LTIP)
	The LTIP awards were earned upon the achievement of earnings before interest, taxes, depreciation and amortization (EBITDA) and market-based targets for fiscal years 2007, 2008 and 2009 and the grantee’s continuous employment in active service until the final vest date, which was approximately three years from the grant date.
	Fair Value Inputs
	The fair value of each share-based award grant has been estimated on the date of grant using the Black-Scholes-Merton Option Pricing Model with the following assumptions:
			December 31,
			2013				2012				2011
	Expected volatility			44	%			47.3 – 49.9	%			49.5	%
	Expected dividend yield			0	%			0	%			0	%
	Expected life (in years)			4.60				4.18				4.10
	Risk-free interest rate			0.65 – 1.31	%			0.50 – 0.62	%			0.67 – 1.63	%
	Weighted-average fair value of stock options granted		$	10.86			$	10.79			$	8.36
	Weighted-average fair value of restricted stock units granted		$	30.00			$	28.03			$	20.30
	The fair value of TSR Performance Awards is estimated on the date of grant using a binomial lattice-based valuation pricing model. The fair value of Revenue Performance Awards and ANI Performance Awards are estimated on the date of grant using a Black-Scholes-Merton valuation pricing model. The weighted-average assumptions were as follows:
			December 31,
			2013				2012				2011
	Expected dividend yield			0	%			0	%			0	%
	Risk-free interest rate			0.34	%			0.39	%			1.16	%
	Weighted-average fair value of TSR Performance Awards granted		$	30.42			$	28.98			$	21.27
	Weighted-average fair value of Revenue Performance Awards granted		$	28.87				N/A				N/A
	Weighted-average fair value of ANI Performance Awards granted		$	N/A			$	27.99			$	19.48
Application of alternative assumptions could produce significantly different estimates of the fair value of stock-based compensation and consequently, the related amounts recognized in our consolidated statements of operations.
For further information on our stock-based compensation programs, please refer to Note 14.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In February 2013, the FASB issued Accounting Standards Update 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. We adopted this update in the first quarter of 2013. For the amounts reclassified out of accumulated other comprehensive income (AOCI),  please refer to Note 4.
	In July 2013, the FASB issued Accounting Standards Update 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The guidance is effective for interim and annual periods beginning after December 15, 2013, with early adoption permitted. This standard will be effective for us beginning with the quarter ending March 31, 2014. We do not expect the adoption to have a material impact on our consolidated financial statements.

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Computation Of Basic And Diluted Net (Loss) Income Per Share	'
		December 31,
		2013				2012				2011
	Numerator:
	Net income	$	5,894			$	20,454			$	65,135
	Denominator:
	Weighted average common stock outstanding (basic)		43,616				42,508				41,270
	Common equivalent shares from options to purchase common stock and restricted common stock units		1,709				1,491				1,257
	Potential common shares related to convertible senior notes		—				—				—
	Weighted average common stock outstanding (diluted)		45,325				43,999				42,527
	Basic net income per share	$	0.14			$	0.48			$	1.58
	Diluted net income per share	$	0.13			$	0.46			$	1.53
Securities Excluded From Computation Of Diluted Earnings Per Share	'
		December 31,
		2013				2012				2011
	Stock options		155				653				1,303
	Restricted stock units		11				262				73
	Performance stock units		8				—				79
	Senior convertible notes		—				—				—
	Total antidilutive awards		174				915				1,455
Summary Of Stock-Based Compensation Expense	'
		Year Ended December 31,
		2013			2012			2011
	Stock options	$	4,020		$	4,608		$	4,941
	Restricted stock units		8,223			7,101			5,293
	Performance stock units		2,148			1,883			1,057
	Restricted common stock		—			—			321
	Total stock-based compensation expense	$	14,391		$	13,592		$	11,612
Schedule Of Unamortized Stock-Based Compensation Expense And Weighted Average Remaining Amortization Period	'
						Unamortized				Weighted
						Stock-Based				Average
						Compensation				Amortization
						Expense				Period
						(in thousands)				(in years)
	Stock options						7,155				2.40
	Restricted stock units						15,936				2.29
	Performance stock units						2,573				0.96
Assumptions Used To Estimate Fair Value Of Share-Based Award	'
		December 31,
		2013				2012				2011
	Expected volatility		44	%			47.3 – 49.9	%			49.5	%
	Expected dividend yield		0	%			0	%			0	%
	Expected life (in years)		4.60				4.18				4.10
	Risk-free interest rate		0.65 – 1.31	%			0.50 – 0.62	%			0.67 – 1.63	%
	Weighted-average fair value of stock options granted	$	10.86			$	10.79			$	8.36
	Weighted-average fair value of restricted stock units granted	$	30.00			$	28.03			$	20.30
Performance Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Summary Of Stock-Based Compensation Expense	'
		December 31,
		2013				2012				2011
	TSR Performance Awards		1,013				1,051				605
	Revenue Performance Awards		395				—				—
	ANI Performance Awards		740				832				452
	Total		2,148				1,883				1,057
ANI And TSR Performance Award [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Assumptions Used To Estimate Fair Value Of Share-Based Award	'
		December 31,
		2013				2012				2011
	Expected dividend yield		0	%			0	%			0	%
	Risk-free interest rate		0.34	%			0.39	%			1.16	%
	Weighted-average fair value of TSR Performance Awards granted	$	30.42			$	28.98			$	21.27
	Weighted-average fair value of Revenue Performance Awards granted	$	28.87				N/A				N/A
	Weighted-average fair value of ANI Performance Awards granted	$	N/A			$	27.99			$	19.48

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements [Abstract]	'
Assets And Liabilities Measured At Fair Value On A Recurring Basis	'
	As of December 31, 2013		Quoted Prices in Active Markets		Significant Other Observable Inputs		Significant Unobservable Inputs		31-Dec-13
			(Level 1)		(Level 2)		(Level 3)
	Cash equivalents (1)		$	13,692	$	—	$	—	$	13,692
	Marketable securities (2)			—		10,589		—		10,589
	Total		$	13,692	$	10,589	$	—	$	24,281
	Contingent consideration (3)			—		—		-500		-500
	Total		$	—	$	—	$	-500	$	-500
	As of December 31, 2012		Quoted Prices in Active Markets		Significant Other Observable Inputs		Significant Unobservable Inputs		31-Dec-12
			(Level 1)		(Level 2)		(Level 3)
	Cash equivalents (1)		$	63,774	$	—	$	—	$	63,774
	Marketable securities (2)			—		38,459		—		38,459
	Total		$	63,774	$	38,459	$	—	$	102,233
	Contingent consideration (3) (4)			—		—		-1,000		-1,000
	Total		$	—	$	—	$	-1,000	$	-1,000
Reconciliation Of Beginning And Ending Balances For Contingent Consideration	'
	Balance as of December 31, 2011		$	-900
	Change in fair value of contingent consideration – eCarList (4)			900
	Record fair value of contingent consideration – ClickMotive (3)			-250
	Change in fair value of contingent consideration – ClickMotive (3)			-750
	Balance as of December 31, 2012		$	-1,000
	Change in fair value of contingent consideration – ClickMotive (3)			500
	Balance as of December 31, 2013		$	-500
		-1		Cash equivalents consist of highly liquid investments with original maturity dates of three months or less, for which we determine fair value through quoted market prices. As of December 31, 2013 and 2012, a majority of these investments were at least AA rated.
		-2		As of December 31, 2013, Level 2 marketable securities include corporate bonds, certificates of deposit, and non-U.S. government securities. As of December 31, 2012, Level 2 marketable securities include U.S. treasury and agency securities, corporate bonds, municipal bonds and an investment in a tax-advantaged preferred security. Fair market value was determined based on the quoted market prices of the underlying securities.
		-3		In connection with our October 1, 2012 acquisition of ClickMotive, a portion of the purchase price included contingent consideration that is payable in 2014 based upon the achievement of certain revenue performance targets in 2013.
				The fair value of the revenue contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The total contingent consideration was revalued each reporting period, with the resulting gains and losses recorded in the consolidated statements of operations. The fair value of the total contingent consideration as of the acquisition date was estimated at $0.3 million. We estimated the fair value of the total contingent consideration as of December 31, 2012 to be $1.0 million.  The increase included the impact of an adjustment to the performance targets made subsequent to the close of the acquisition. We estimated the fair value of the total contingent consideration as of December 31, 2013 to be $0.5 million. We recorded income of $0.5 million in the three months ended June 30, 2013 as a result of a decrease in revenue forecasts.
		-4		A portion of the purchase price of eCarList included contingent consideration that was to be payable in the first quarter of 2013 based upon the achievement of certain revenue targets in 2012. The fair value of the contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The contingent consideration was revalued each reporting period, until settled, with the resulting gains and losses recorded in the consolidated statements of operations. The revenue targets for 2012 were not met and therefore no contingent consideration payments were made. We recorded a fair value adjustment in the amount of $0.9 million of income for the year ended December 31, 2012 as a result of the decrease in the estimated settlement of the contingent consideration from the estimated amount as of December 31, 2011.

Marketable_Securities_Tables

Marketable Securities (Tables)	12 Months Ended
	Dec. 31, 2013
Marketable Securities [Abstract]	'
Summary Of Available-For-Sale Securities	'
	As of December 31, 2013	Aggregate		Gross		Gross		Aggregate
		Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
	Non-U.S. government securities		2,090		—		-32		2,058
	Certificates of deposit		3,011		—		-11		3,000
	Corporate debt securities		5,627		—		-96		5,531
	Total	$	10,728	$	—	$	-139	$	10,589
	As of December 31, 2012	Aggregate		Gross		Gross		Aggregate
		Cost Basis		Unrealized Gains		Unrealized Losses		Fair Value
	U.S. Treasury and agency securities	$	17,706	$	20	$	0	$	17,726
	Corporate debt securities		20,545		20		-2		20,563
	Municipal securities		170		—		0		170
	Total	$	38,421	$	40	$	-2	$	38,459

Property_And_Equipment_Tables

Property And Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property And Equipment [Abstract]	'
Schedule Of Property And Equipment	'
		Estimated
		Useful Life		December 31,
		(Years)		2013		2012
	Computer equipment		3 – 5	$	53,085	$	47,052
	Office equipment		5		4,946		5,245
	Furniture and fixtures		5		6,038		5,171
	Leasehold improvements		3 – 9		8,723		4,575
	Total property and equipment, gross				72,792		62,043
	Less: Accumulated depreciation and amortization				-40,926		-34,636
	Total property and equipment, net			$	31,866	$	27,407

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Intangible Assets And Goodwill [Abstract]	'
Components Of Finite-Lived Intangible Assets	'
		31-Dec-13				31-Dec-12
										Estimated
		Gross		Accumulated		Gross		Accumulated		Useful Life
		Book Value		Amortization		Book Value		Amortization		(Years)
	Customer relationships	$	114,193	$	-37,099	$	99,673	$	-43,229	12-Apr
	Technology		78,620		-35,793		69,620		-22,369	8-Apr
	Trade names		12,560		-4,087		9,100		-2,480	10-Mar
	Non-compete agreements		8,200		-5,671		7,540		-4,469	6-Mar
	State DMV relationships		7,790		-3,159		6,190		-1,977	8-Jun
	Total	$	221,363	$	-85,809	$	192,123	$	-74,524
Estimated Future Amortization Expense Related To Intangible Assets	'
	2014	$	32,056
	2015		30,969
	2016		22,394
	2017		15,936
	2018		11,401
	Thereafter		22,798
	Total	$	135,554

Goodwill_Tables

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2013
Intangible Assets And Goodwill [Abstract]	'
Change In Carrying Amount Of Goodwill	'
	Goodwill, gross, as of December 31, 2011	$	200,840
	Accumulated impairment losses as of December 31, 2011		—
	Goodwill, net, as of December 31, 2011	$	200,840
	Impact of change in Canadian dollar exchange rate		561
	Contribution of Chrome to joint venture		-7,874
	Acquisition of CentralDispatch		48,350
	Acquisition of ClickMotive		26,241
	Acquisition of Ford’s iCONNECT DMS		2,528
	Goodwill, gross, as of December 31, 2012	$	270,646
	Accumulated impairment losses as of December 31, 2012		—
	Goodwill, net, as of December 31, 2012	$	270,646
	Impact of change in Canadian dollar exchange rate		-1,850
	Acquisition of Casey & Casey		9,029
	Acquisition of Customer Focused Marketing		7,296
	Acquisition of VINtek		29,930
	Acquisition of certain assets of Nexteppe		2,197
	Goodwill, gross, as of December 31, 2013	$	317,248
	Accumulated impairment losses as of December 31, 2013		—
	Goodwill, net, as of December 31, 2013	$	317,248

Investments_Tables

Investments (Tables)	12 Months Ended
	Dec. 31, 2013
Investments [Abstract]	'
Investments	'
		31-Dec-13		31-Dec-12
	Cost method investment	$	82,690	$	82,690
	Equity method investment		36,628		40,118
	Total investments	$	119,318	$	122,808
Activity In Equity Method Investment	'
		31-Dec-13		31-Dec-12
	Beginning balance	$	40,118	$	—
	Investment, January 1, 2012		—		44,050
	Share of net income		8,475		5,152
	Amortization of basis difference		-2,824		-3,985
	Payable to partner		100		—
	Cash distributions received		-9,241		-5,099
	Ending balance	$	36,628	$	40,118
Condensed Balance Sheet - Chrome Data Solutions	'
	Condensed Balance Sheet
		31-Dec-13		31-Dec-12
	Current assets	$	12,875	$	10,577
	Non-current assets		31,871		34,053
	Total assets	$	44,746	$	44,630
	Current liabilities	$	6,257	$	5,525
	Non-current liabilities		1,401		226
	Total liabilities	$	7,658	$	5,751
Condensed Results Of Operations - Chrome Data Solutions	'
	Condensed Results of Operations
		Year Ended December 31,
		2013		2012
	Revenue	$	47,900	$	44,846
	Gross profit		33,853		30,809
	Net income		16,951		10,303

Business_Combinations_Tables

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2013
Business Acquisition [Line Items]	'
Unaudited Pro Forma Summary Of Operations	'
					Year Ended December 31,
					2013		2012
					(in thousands, except per share data)
	Net revenue				$	502,547	$	433,746
	Net income					7,817		25,705
	Basic net income per share					0.18		0.60
	Diluted net income per share					0.17		0.58
VINtek [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	5,038
	Property and equipment		429
	Intangible assets		31,520
	Goodwill		29,930
	Total assets acquired		66,917
	Total liabilities assumed		-13,548
	Net assets acquired	$	53,369
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Customer relationships	$	25,600	12
	Technology		4,400	5
	Non-compete agreement		920	5
	Trade names		600	5
	Total acquired identifiable intangible assets	$	31,520
Customer Focused Marketing, Inc. [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	990
	Intangible assets		4,960
	Goodwill		7,296
	Total assets acquired		13,246
	Total liabilities assumed		-48
	Net assets acquired	$	13,198
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Technology	$	2,700	6
	Customer relationships		1,170	8
	Trade names		960	5
	Non-compete agreement		130	5
	Total acquired identifiable intangible assets	$	4,960
Casey & Casey NPS, Inc. [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	5,633
	Property and equipment		32
	Non-current assets		15
	Intangible assets		11,990
	Goodwill		9,029
	Total assets acquired		26,699
	Total liabilities assumed		-5,387
	Net assets acquired	$	21,312
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Customer relationships	$	6,000	9
	Technology		1,900	4
	Trade names		1,900	10
	State DMV relationships		1,600	8
	Non-compete agreement		590	6
	Total acquired identifiable intangible assets	$	11,990
(Ford) iCONNECT DMS [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	91
	Customer relationships (10 year economic life)		4,328
	Goodwill		2,528
	Total assets acquired		6,947
	Total liabilities assumed		—
	Net assets acquired	$	6,947
ClickMotive LP [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	3,862
	Property and equipment		810
	Intangible assets		21,840
	Goodwill		26,241
	Total assets acquired		52,753
	Total liabilities assumed		-2,897
	Net assets acquired	$	49,856
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Customer relationships	$	12,500	10.0
	Technology		7,600	8.0
	Trade names		1,500	8.0
	Non-compete agreement		240	5.0
	Total acquired identifiable intangible assets	$	21,840
Dealertrack CentralDispatch [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	224
	Property and equipment		101
	Intangible assets		25,340
	Goodwill		48,350
	Total assets acquired		74,015
	Total liabilities assumed		-215
	Net assets acquired	$	73,800
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Technology	$	14,200	7.0
	Customer relationships		7,930	4.0
	Trade names		2,800	7.0
	Non-compete agreement		410	4.0
	Total acquired identifiable intangible assets	$	25,340
eCarList [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	414
	Property and equipment		72
	Intangible assets		13,530
	Goodwill		23,427
	Total assets acquired		37,443
	Total liabilities assumed		-1,036
	Net assets acquired	$	36,407
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Customer relationships	$	4,500	7.0
	Technology		6,500	4.0
	Non-compete agreements		730	5.0
	Trade names		1,800	7.0
	Total acquired identifiable intangible assets	$	13,530
Initial Purchase Price Allocation	'
	Cash consideration	$	23,451
	Fair value of note payable		10,179
	Discount on note payable		-123
	Fair value of contingent consideration		2,900
	Total purchase price	$	36,407
Dealertrack Processing Solutions, Inc. [Member]	'
Business Acquisition [Line Items]	'
Purchase Price Allocation	'
	Current assets	$	33,442
	Property and equipment		825
	Non-current assets		6,526
	Intangible assets		83,760
	Goodwill		74,217
	Total assets acquired		198,770
	Total liabilities assumed		-58,406
	Net assets acquired	$	140,364
Acquired Intangible Assets And Weighted-Average Useful Lives	'
				Weighted-
				Average
		Amount		Useful Life
		(In thousands)		(Years)
	Customer relationships	$	43,900	6.4
	Technology		27,500	5.0
	State DMV contractual relationships		6,190	6.0
	Non-compete agreements		5,180	3.0
	Trade names		990	3.0
	Total acquired identifiable intangible assets	$	83,760

Accrued_Liabilities_Other_Tabl

Accrued Liabilities - Other (Tables)	12 Months Ended
	Dec. 31, 2013
Accrued Liabilities - Other [Abstract]	'
Components Of Other Accrued Liabilities	'
		31-Dec-13		31-Dec-12
	Professional fees	$	5,295	$	2,564
	Customer deposits		2,368		2,360
	Computer and office equipment, furniture and fixtures		1,495		968
	Revenue share		1,510		1,096
	Acquisition-related compensation		647		1,667
	Sales taxes		2,087		779
	Interest payable		981		1,439
	State DMV transaction fees		695		620
	Software licenses and maintenance contracts		278		1,071
	Utilities and occupancy		589		455
	Marketing		370		351
	Other		4,969		3,500
	Total accrued liabilities – other	$	21,284	$	16,870

Senior_Convertible_Notes_Table

Senior Convertible Notes (Tables)	12 Months Ended
	Dec. 31, 2013
Senior Convertible Notes And Revolving Credit Facility [Abstract]	'
Schedule Of Net Carrying Amount Of The Liability Component Of The Notes	'
			31-Dec-13		31-Dec-12
	Principal amount	$	200,000	$	200,000
	Unamortized discount		29,683		37,721
	Net carrying value	$	170,317	$	162,279
Schedule Of Interest Expense Associated With The Notes	'
		Year Ended December 31,
		2013		2012
	Cash interest expense (1.50% coupon rate)	$	3,000	$	2,458
	Amortization of debt issuance costs and debt discount		9,032		6,989
	Total interest expense	$	12,032	$	9,447

Stock_Option_And_Deferred_Comp1

Stock Option And Deferred Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Stock Option And Deferred Compensation Plans [Abstract]	'
Summary Of Stock-Based Compensation Expense By Expense Category	'
			December 31,
			2013				2012			2011
	Cost of revenue		$	2,828			$	2,429		$	1,791
	Product development			727				749			735
	Selling, general and administrative			10,836				10,414			9,086
	Total stock-based compensation expense		$	14,391			$	13,592		$	11,612
Summary Of Activity Under Stock Option Plans	'
								Weighted Average
			Number of					Remaining		Aggregate
			Options		Weighted Average			Contractual Life		Intrinsic Value
			(in thousands)		Exercise Price			(in years)		(in thousands)
	Outstanding as of January 1, 2013		3,817		$	18.73
	Options granted		421			29.10
	Options exercised		-624			14.68
	Options forfeited		-98			25.46
	Options expired		-3			29.20
	Outstanding as of December 31, 2013		3,513		$	20.50		3.10		$	96,887
	Vested and expected to vest as of December 31, 2013		3,486		$	20.44		3.08		$	96,360
	Options exercisable as of December 31, 2013		2,653		$	18.59		2.34		$	78,245
Summary Of Non-Vested Shares Of Restricted Common Stock Units And Performance Stock Units	'
			Restricted Common Stock Units					Performance Stock Units
			Number of		Weighted			Number of		Weighted
			Awards		Average Grant			Awards		Average Grant
			(in thousands)		Date Fair Value			(in thousands)		Date Fair Value
	Non-vested awards as of January 1, 2013		959		$	21.21		269		$	21.41
	Awards granted		466			30.00		72			29.62
	Awards vested		-385			18.47		-99			17.40
	Awards cancelled/expired/forfeited		-77			26.98		—			—
	Adjustment for performance achieved		—			—		28			23.19
	Non-vested awards as of December 31, 2013		963		$	26.09		270		$	25.25
Summary Of Total Fair Value For Vested Restricted Common Stock Units, Performance Stock Units And Restricted Common Stock Awards	'
			December 31,
			2013			2012			2011
	Restricted common stock units		$	7,104		$	9,285		$	5,470
	Performance stock units		$	1,727		$	—		$	—
	Restricted common stock awards		$	—		$	—		$	701
Summary, By Performance, Potential Threshold And Maximum Stock Units	'
		Threshold		Maximum		Threshold		Maximum		Threshold		Maximum
		ANI		ANI		Revenue		Revenue		TSR		TSR
	2010 Plan	25%		125%		-		-		0%		150%
	2011 Plan	25%		125%		-		-		0%		150%
	2012 Plan	25%		125%		-		-		0%		150%
	2013 Plan	-		-		25%		150%		25%		150%
Summary, By Performance Award Type, Status of Performance Stock Units For Grants	'
	Revenue Performance Awards
									Adjusted
									Number of
			Target				Percent of		PSUs Based on		End of
			Number		Cancelled		Goal		Goal		Measurement
	Grant Date		of PSUs		PSUs		Achieved		Achievement		Period		Vest Date
	3/4/13		36,948		—		118%		43,596		12/31/13		2/28/16
	ANI Performance Awards
									Adjusted
									Number of
			Target				Percent of		PSUs Based on		End of
			Number		Cancelled		Goal		Goal		Measurement
	Grant Date		of PSUs		PSUs		Achieved		Achievement		Period		Vest Date
	2/24/11		43,290		*		125%		54,111		12/31/11		1/31/14
	2/28/12		35,495		—		103%		36,556		12/31/12		1/31/15
	* - In 2011, 4,630 of 2011 ANI Performance Awards were cancelled and subsequently reissued.
	TSR Performance Awards
									Adjusted
									Number of
			Target				Percent of		PSUs Based on		End of
			Number		Cancelled		Goal		Goal		Measurement
	Grant Date		of PSUs		PSUs		Achieved		Achievement		Period		Vest Date
	2/24/11		43,290		**		150%		64,934		12/31/13		1/31/14
	2/28/12		35,495		—		N/A		—		12/31/14		1/31/15
	3/4/13		35,065		—		N/A		—		12/31/15		2/28/16
	** - In 2011, 4,630 of 2011 TSR Performance Awards were cancelled and subsequently reissued.

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Taxes [Abstract]	'
Components Of Income (Loss) Before Income Taxes	'
		December 31,
		2013		2012		2011
	United States	$	-8,694	$	21,091	$	55,376
	Canada		13,261		11,612		7,356
	Total income before provision for income taxes	$	4,567	$	32,703	$	62,732
Components Of (Provision For) Benefit From Income Taxes	'
		December 31,
		2013		2012		2011
	Current tax:
	Federal	$	-4,993	$	-6,859	$	1,108
	State and local		-1,155		-1,767		-454
	Canada		-3,864		-2,872		-1,621
	Total current tax		-10,012		-11,498		-967
	Deferred tax:
	Federal		8,892		-1,131		1,412
	State and local		2,069		729		2,232
	Canada		378		-349		-274
	Total deferred tax		11,339		-751		3,370
	(Provision for) benefit from income taxes, net	$	1,327	$	-12,249	$	2,403
Deferred Tax Assets And Liabilities	'
		December 31,
		2013		2012
	Deferred tax assets:
	Net operating loss carryforwards	$	8,877	$	10,266
	Stock-based compensation		17,525		17,416
	Acquired intangibles		8,010		13,809
	Tax credits		4,433		3,516
	Capital loss		673		887
	Deferred revenue		3,495		2,736
	Sales and receivables allowances		2,469		1,697
	Other		4,540		1,790
	Total deferred tax assets		50,022		52,117
	Deferred tax liabilities:
	Acquired Intangibles		-24,362		-28,194
	Capitalized software and website development		-10,532		-7,600
	Depreciation and amortization		-8,640		-9,993
	Investments in disposed subsidiaries		-28,595		-31,565
	Other		-5,342		-3,047
	Total deferred tax (liabilities)		-77,471		-80,399
	Deferred tax (liabilities), net		-27,449		-28,282
	Deferred tax asset valuation allowance		-3,270		-4,094
	Total deferred tax (liabilities), net	$	-30,719	$	-32,376
Analysis Of The Effective Tax Rate	'
		December 31,
		2013		2012		2011
	Pre-tax book income	35.0	%	35.0	%	35.0	%
	State taxes	-7.5		2.5		1.5
	Foreign rate differential	-25.3		-2.6		-1.1
	Non-deductible expenses	7.3		0.5		0.2
	Valuation allowance	-19		-0.5		-36.9
	Deferred tax liability impact of disposals and contributions	—		3.7		0.6
	Adjust tax balances for filed returns	-2.2		-0.6		-1.9
	Transaction costs	9.9		—		—
	General business and other tax credits	-33.9		—		-0.6
	Executive compensation	7.8		0.8		0.2
	State rate change	—		-1.5		—
	Other	-1.2		0.2		-0.8
	Total	-29.1	%	37.5	%	-3.8	%
Reconciliation Of Liability For Uncertain Tax Positions	'
	Balance as of January 1, 2011	$	1,031
	Additions		244
	Settlements		-482
	Balance as of December 31, 2011	$	793
	Balance as of January 1, 2012	$	793
	Additions		226
	Expired statute of limitations / settlements		-136
	Balance as of December 31, 2012	$	883
	Balance as of January 1, 2013	$	883
	Additions		292
	Expired statute of limitations / settlements		-249
	Balance as of December 31, 2013	$	926

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Information [Abstract]	'
Supplemental Disclosure Of Revenue By Service Type	'
		Year Ended December 31,
		2013		2012		2011
	Transaction services revenue	$	276,861	$	225,011	$	184,892
	Subscription services revenue		181,731		145,148		146,621
	Other		22,942		18,713		21,781
	Total net revenue	$	481,534	$	388,872	$	353,294

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments And Contingencies [Abstract]	'
Summary Of Future Minimum Rental Payments Under The Noncancelable Operating Leases	'
	Years Ending December 31,
	2014	$	10,863
	2015		9,327
	2016		7,952
	2017		6,299
	2018		5,943
	Thereafter		11,943
	Total	$	52,327
Summary Of Leased Property Under Capital Leases	'
		December 31,
		2013		2012
	Computer and office equipment	$	407	$	351
	Furniture and fixtures		—		107
			407		458
	Less: Accumulated depreciation		-83		-179
	Total capital leases, net	$	324	$	279
Summary Of Future Minimum Rental Payments Under The Capital Leases	'
	Years Ending December 31,
	2014	$	100
	2015		98
	2016		74
	2017		32
	2018		—
	Total minimum lease payments		304
	Less: Amount representing taxes, included in total minimum lease payments		-24
	Net minimum lease payments		280
	Less: Amount representing interest		—
	Present value of net minimum lease payments	$	280

Contribution_To_Chrome_Data_So1

Contribution To Chrome Data Solutions And Disposal Of ALG (Tables)	12 Months Ended
	Dec. 31, 2013
Contribution To Chrome Data Solutions And Disposal Of ALG [Abstract]	'
Schedule Of Pre-Tax Gain Of Chrome Data Solutions	'
	Cash	$	1,750
	Property and equipment		3,947
	Goodwill		7,874
	Intangible assets		2,017
	Other assets and liabilities, net		769
	Carrying value of contributed net assets of Chrome		16,357
	Total consideration received (50% of the fair value of shares received)		44,050
	Pre-tax gain	$	27,693
Schedule Of Pre-Tax Gain Of ALG	'
	Fair value of the shares received	$	75,000
	Additional cash investment		7,500
	Fair value of the warrant received		5,500
	Fair value of the data license		5,600
	Consideration received		93,600
	Cash		7,500
	Property and equipment		1,753
	Goodwill		33,127
	Intangible assets		2,531
	Other assets and liabilities, net		1,368
	Less: Carrying value of net assets		46,279
	Pre-tax gain	$	47,321

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
			segment
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Accelerated depreciation of certain property and equipment due to the discontinuation of use	'	'	$200,000	'	'
Software and website developments costs, net	62,513,000	'	62,513,000	46,182,000	'
Amortization expense of software and website development costs	'	'	19,100,000	13,900,000	12,300,000
Accelerated depreciation of certain technology assets due to the discontinuation of those projects	'	'	1,000,000	'	'
Number of operating segments	'	'	1	'	'
Market capitalization	'	1,900,000,000	'	'	'
Book value, including goodwill	'	602,000,000	'	'	'
Advertising and promoting costs	'	'	600,000	500,000	800,000
Senior convertible notes, conversion price	$37.37	'	$37.37	'	'
Warrant transactions, initial strike price	$46.18	'	$46.18	'	'
Diluted shares from convertible debt	546	288	'	'	'
Income tax benefit related to stock-based compensation expense	'	'	$5,200,000	$5,000,000	$4,200,000
Transaction Services Revenue [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Expected customer relationship period	'	'	'4 years	'	'
Title adminstration period	'	'	'3 years	'	'
Software And Website Development Costs [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Estimated useful life	'	'	'2 years	'	'
Estimated useful life, platform updates	'	'	'5 years	'	'
Estimated useful life, SAP ERP implementation and salesfore.com implementation	'	'	'7 years	'	'
Directors [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Vesting period	'	'	'3 years	'	'
Executive Officers [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Options vested, expiration period	'	'	'12 months	'	'
Stock Options [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Vesting period	'	'	'4 years	'	'
Options granted, expiration period	'	'	'7 years	'	'
Options vested, expiration period	'	'	'3 months	'	'
Stock Options Granted Prior To July 11, 2007 [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Options granted, expiration period	'	'	'10 years	'	'
Restricted Stock Units [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Vesting period	'	'	'4 years	'	'
Restricted Stock Units [Member] | Directors [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Vesting period	'	'	'1 year	'	'
Performance Stock Units [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Vesting period	'	'	'3 years	'	'
Maximum [Member] | Subscription Services Revenue [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Expected customer relationship period	'	'	'60 months	'	'
Minimum [Member] | Subscription Services Revenue [Member]	'	'	'	'	'
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'
Expected customer relationship period	'	'	'36 months	'	'

Summary_Of_Significant_Account3

Summary Of Significant Accounting Policies (Computation Of Basic And Diluted Net Income (Loss) Per Share) (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]	'	'	'	'	'
Net income	'	'	$5,894	$20,454	$65,135
Weighted average common stock outstanding (basic)	'	'	43,616	42,508	41,270
Common equivalent shares from options to purchase common stock and restricted common stock units	'	'	1,709	1,491	1,257
Potential common shares related to convertible senior notes	546	288	'	'	'
Weighted average common stock outstanding (diluted)	'	'	45,325	43,999	42,527
Basic net income per share	'	'	$0.14	$0.48	$1.58
Diluted net income per share	'	'	$0.13	$0.46	$1.53

Summary_Of_Significant_Account4

Summary Of Significant Accounting Policies (Securities Excluded From Computation Of Diluted Earnings Per Share) (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive awards	174	915	1,455
Stock Options [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive awards	155	653	1,303
Restricted Stock Units [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive awards	11	262	73
Performance Stock Units [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive awards	8	'	79
Senior Convertible Notes [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Total antidilutive awards	'	'	'

Summary_Of_Significant_Account5

Summary Of Significant Accounting Policies (Summary Of Stock-Based Compensation Expense) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	$14,391	$13,592	$11,612
Performance based stock compensation expense	2,148	1,883	1,057
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	4,020	4,608	4,941
Restricted Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	8,223	7,101	5,293
Performance Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	2,148	1,883	1,057
Restricted Common Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock-based compensation expense	'	'	321
TSR Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Performance based stock compensation expense	1,013	1,051	605
Revenue Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Performance based stock compensation expense	395	'	'
ANI Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Performance based stock compensation expense	$740	$832	$452

Summary_Of_Significant_Account6

Summary Of Significant Accounting Policies (Schedule Of Unamortized Stock-Based Compensation Expense And Weighted Average Remaining Amortization Period) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unamortized Stock-Based Compensation Expense	$7,155
Weighted Average Remaining Amortization Period	'2 years 4 months 24 days
Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unamortized Stock-Based Compensation Expense	15,936
Weighted Average Remaining Amortization Period	'2 years 3 months 15 days
Performance Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Unamortized Stock-Based Compensation Expense	$2,573
Weighted Average Remaining Amortization Period	'11 months 16 days

Summary_Of_Significant_Account7

Summary Of Significant Accounting Policies (Assumptions Used To Estimate Fair Value Of Share-Based Award) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected volatility	44.00%	'	49.50%
Expected volatility, minimum	'	47.30%	'
Expected volatility, maximum	'	49.90%	'
Expected dividend yield	0.00%	0.00%	0.00%
Expected life (in years)	'4 years 7 months 6 days	'4 years 2 months 5 days	'4 years 1 month 6 days
Risk-free interest rate, minimum	0.65%	0.50%	0.67%
Risk-free interest rate, maximum	1.31%	0.62%	1.63%
Weighted-average fair value of stock options granted	$10.86	$10.79	$8.36
Weighted-average fair value of restricted stock units granted	$30	$28.03	$20.30
ANI Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted-average fair value of restricted common stock granted	'	$27.99	$19.48
TSR Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted-average fair value of restricted common stock granted	$30.42	$28.98	$21.27
Revenue Performance Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Weighted-average fair value of restricted common stock granted	$28.87	'	'
ANI And TSR Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected volatility	0.00%	0.00%	0.00%
Risk-free interest rate	0.34%	0.39%	1.16%

Fair_Value_Measurements_Narrat

Fair Value Measurements (Narrative) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Fair Value Measurements [Abstract]	'	'
Fair value of senior convertible notes	$277.50	$211.50

Fair_Value_Measurements_Assets

Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'		'		'
Cash equivalents	'	$13,692	[1]	$63,774	[1]	'
Marketable securities	'	10,589	[2]	38,459	[2]	'
Total	'	24,281		102,233		'
Contingent consideration	'	-500	[3]	-1,000	[3],[4]	'
Total	'	-500		-1,000		'
Recorded income as a result of a decrease in contingent consideration liability	500	500		900		2,000
Quoted Prices In Active Markets (Level 1) [Member]	'	'		'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'		'		'
Cash equivalents	'	13,692	[1]	63,774	[1]	'
Total	'	13,692		63,774		'
Significant Other Observable Inputs (Level 2) [Member]	'	'		'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'		'		'
Marketable securities	'	10,589	[2]	38,459	[2]	'
Total	'	10,589		38,459		'
Significant Unobservable Inputs (Level 3) [Member]	'	'		'		'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'		'		'
Contingent consideration	'	-500	[3]	-1,000	[3],[4]	'
Total	'	($500)		($1,000)		'
[1]	Cash equivalents consist of highly liquid investments with original maturity dates of three months or less, for which we determine fair value through quoted market prices. As of December 31, 2013 and 2012, a majority of these investments were at least AA rated.
[2]	As of December 31, 2013, Level 2 marketable securities include corporate bonds, certificates of deposit, and non-U.S. government securities. As of December 31, 2012, Level 2 marketable securities include U.S. treasury and agency securities, corporate bonds, municipal bonds and an investment in a tax-advantaged preferred security. Fair market value was determined based on the quoted market prices of the underlying securities.
[3]	In connection with our October 1, 2012 acquisition of ClickMotive, a portion of the purchase price included contingent consideration that is payable in 2014 based upon the achievement of certain revenue performance targets in 2013. The fair value of the revenue contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The total contingent consideration was revalued each reporting period, with the resulting gains and losses recorded in the consolidated statements of operations. The fair value of the total contingent consideration as of the acquisition date was estimated at $0.3 million. We estimated the fair value of the total contingent consideration as of December 31, 2012 to be $1.0 million. The increase included the impact of an adjustment to the performance targets made subsequent to the close of the acquisition. We estimated the fair value of the total contingent consideration as of December 31, 2013 to be $0.5 million. We recorded income of $0.5 million in the three months ended June 30, 2013 as a result of a decrease in revenue forecasts.
[4]	A portion of the purchase price of eCarList included contingent consideration that was to be payable in the first quarter of 2013 based upon the achievement of certain revenue targets in 2012. The fair value of the contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The contingent consideration was revalued each reporting period, until settled, with the resulting gains and losses recorded in the consolidated statements of operations. The revenue targets for 2012 were not met and therefore no contingent consideration payments were made. We recorded a fair value adjustment in the amount of $0.9 million of income for the year ended December 31, 2012 as a result of the decrease in the estimated settlement of the contingent consideration from the estimated amount as of December 31, 2011.

Fair_Value_Measurements_Reconc

Fair Value Measurements (Reconciliation Of Beginning And Ending Balances For Contingent Consideration) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2012
In Thousands, unless otherwise specified				ClickMotive LP [Member]		ClickMotive LP [Member]		eCarList [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]	'	'	'	'		'		'
Balance	($500)	($1,000)	($900)	'		'		'
Record fair value of contingent consideration	'	'	'	'		-250	[1]	'
Change in fair value of contingent consideration	'	'	'	500	[1]	-750	[1]	900	[2]
Balance	($500)	($1,000)	($900)	'		'		'
[1]	In connection with our October 1, 2012 acquisition of ClickMotive, a portion of the purchase price included contingent consideration that is payable in 2014 based upon the achievement of certain revenue performance targets in 2013. The fair value of the revenue contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The total contingent consideration was revalued each reporting period, with the resulting gains and losses recorded in the consolidated statements of operations. The fair value of the total contingent consideration as of the acquisition date was estimated at $0.3 million. We estimated the fair value of the total contingent consideration as of December 31, 2012 to be $1.0 million. The increase included the impact of an adjustment to the performance targets made subsequent to the close of the acquisition. We estimated the fair value of the total contingent consideration as of December 31, 2013 to be $0.5 million. We recorded income of $0.5 million in the three months ended June 30, 2013 as a result of a decrease in revenue forecasts.
[2]	A portion of the purchase price of eCarList included contingent consideration that was to be payable in the first quarter of 2013 based upon the achievement of certain revenue targets in 2012. The fair value of the contingent consideration was determined based upon probability-weighted revenue forecasts for the underlying period. The contingent consideration was revalued each reporting period, until settled, with the resulting gains and losses recorded in the consolidated statements of operations. The revenue targets for 2012 were not met and therefore no contingent consideration payments were made. We recorded a fair value adjustment in the amount of $0.9 million of income for the year ended December 31, 2012 as a result of the decrease in the estimated settlement of the contingent consideration from the estimated amount as of December 31, 2011.

Marketable_Securities_Narrativ

Marketable Securities (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	security	security
Marketable Securities [Abstract]	'	'	'
Marketable securities in a unrealized loss position for greater than 12 months	0	0	'
Realized gain on available-for-sale securities	$0.40	$0	$0.40

Marketable_Securities_Summary_

Marketable Securities (Summary Of Available-For-Sale Securities) (Details) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'		'
Aggregate Cost Basis	$10,728		$38,421
Gross Unrealized Gains	'		40
Gross Unrealized Losses	-139		-2
Aggregate Fair Value	10,589	[1]	38,459	[1]
U.S. Treasury And Agency Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Aggregate Cost Basis	'		17,706
Gross Unrealized Gains	'		20
Gross Unrealized Losses	'		0
Aggregate Fair Value	'		17,726
Non-U.S. Government Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Aggregate Cost Basis	2,090		'
Gross Unrealized Losses	-32		'
Aggregate Fair Value	2,058		'
Certificates of Deposit [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Aggregate Cost Basis	3,011		'
Gross Unrealized Losses	-11		'
Aggregate Fair Value	3,000		'
Corporate Debt Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Aggregate Cost Basis	5,627		20,545
Gross Unrealized Gains	'		20
Gross Unrealized Losses	-96		-2
Aggregate Fair Value	5,531		20,563
Municipal Securities [Member]	'		'
Schedule of Available-for-sale Securities [Line Items]	'		'
Aggregate Cost Basis	'		170
Gross Unrealized Losses	'		0
Aggregate Fair Value	'		$170
[1]	As of December 31, 2013, Level 2 marketable securities include corporate bonds, certificates of deposit, and non-U.S. government securities. As of December 31, 2012, Level 2 marketable securities include U.S. treasury and agency securities, corporate bonds, municipal bonds and an investment in a tax-advantaged preferred security. Fair market value was determined based on the quoted market prices of the underlying securities.

Property_And_Equipment_Narrati

Property And Equipment (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property And Equipment [Abstract]	'	'	'
Depreciation expense	$11.90	$9.40	$8.70

Property_And_Equipment_Schedul

Property And Equipment (Schedule Of Property And Equipment) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, gross	$72,792	$62,043
Less: Accumulated depreciation and amortization	-40,926	-34,636
Total property and equipment, net	31,866	27,407
Computer Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, gross	53,085	47,052
Office Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, gross	4,946	5,245
Estimated Useful Life (Years)	'5 years	'
Furniture And Fixtures [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, gross	6,038	5,171
Estimated Useful Life (Years)	'5 years	'
Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Total property and equipment, gross	$8,723	$4,575
Maximum [Member] | Computer Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Estimated Useful Life (Years)	'5 years	'
Maximum [Member] | Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Estimated Useful Life (Years)	'9 years	'
Minimum [Member] | Computer Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Estimated Useful Life (Years)	'3 years	'
Minimum [Member] | Leasehold Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Estimated Useful Life (Years)	'3 years	'

Intangible_Assets_Narrative_De

Intangible Assets (Narrative) (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Intangible Assets And Goodwill [Abstract]	'	'	'
Intangible amortization expense	$31.50	$28.30	$29.70

Intangible_Assets_Components_O

Intangible Assets (Components Of Finite-Lived Intangible Assets) (Details) (USD $)

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

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. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Trade Names [Member]

Trade Names [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

State DMV Relationships [Member]

State DMV Relationships [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Customer Relationships [Member]

Technology [Member]

Trade Names [Member]

Non-Compete Agreements [Member]

State DMV Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Trade Names [Member]

Non-Compete Agreements [Member]

State DMV Relationships [Member]

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross Book Value

$221,363

$192,123

$114,193

$99,673

$78,620

$69,620

$12,560

$9,100

$8,200

$7,540

$7,790

$6,190

'

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization

($85,809)

($74,524)

($37,099)

($43,229)

($35,793)

($22,369)

($4,087)

($2,480)

($5,671)

($4,469)

($3,159)

($1,977)

'

'

'

'

'

'

'

'

'

'

'

'

Estimated Useful Life (Years)

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'12 years

'8 years

'10 years

'6 years

'8 years

'3 years

'4 years

'4 years

'3 years

'3 years

'6 years

Intangible_Assets_Estimated_Fu

Intangible Assets (Estimated Future Amortization Expense Related To Intangible Assets) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Intangible Assets And Goodwill [Abstract]	'
2014	$32,056
2015	30,969
2016	22,394
2017	15,936
2018	11,401
Thereafter	22,798
Total	$135,554

Goodwill_Change_In_Carrying_Am

Goodwill (Change In Carrying Amount Of Goodwill) (Details) (USD $)

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2012

Jan. 31, 2011

Jul. 01, 2011

Dec. 31, 2012

Oct. 02, 2012

Dec. 31, 2012

Oct. 02, 2012

Dec. 31, 2012

Nov. 01, 2012

Dec. 31, 2013

Apr. 02, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 02, 2013

Dec. 31, 2013

Dealertrack Processing Solutions, Inc. [Member]

eCarList [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

(Ford) iCONNECT DMS [Member]

(Ford) iCONNECT DMS [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Customer Focused Marketing [Member]

VINtek [Member]

VINtek [Member]

Nexteppe [Member]

Goodwill [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, gross

$270,646

$200,840

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, net

270,646

200,840

74,217

23,427

'

48,350

'

26,241

'

2,528

'

9,029

'

'

29,930

'

Impact of change in Canadian dollar exchange rate

-1,850

561

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Acquisition

'

'

'

'

48,350

'

26,241

'

2,528

'

9,029

'

7,296

29,930

'

2,197

Contribution of Chrome to joint venture

'

-7,874

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, gross

317,248

270,646

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill, net

$317,248

$270,646

$74,217

$23,427

'

$48,350

'

$26,241

'

$2,528

'

$9,029

'

'

$29,930

'

Investments_Narrative_Details

Investments (Narrative) (Details) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended
Share data in Millions, unless otherwise specified	Oct. 02, 2011	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments [Line Items]	'	'	'	'	'
Cost method investment	$82,500,000	'	$82,690,000	$82,690,000	'
Warrant additional shares	6.3	'	'	'	'
Value of warrant exercised	'	200,000	'	'	'
Change in fair value of warrant	'	'	'	6,300,000	'
Unrecorded basis difference	'	'	8,700,000	'	'
Amortization of the basis difference to be recorded for 2014	'	'	2,200,000	'	'
Selling, general and administrative	'	'	177,699,000	142,518,000	128,892,000
Other income (expense), net	'	'	614,000	-5,528,000	1,769,000
Chrome Data Solutions [Member]	'	'	'	'	'
Investments [Line Items]	'	'	'	'	'
Ownership interest percentage	'	'	50.00%	'	'
Basis difference	'	'	15,500,000	'	'
Selling, general and administrative	'	'	300,000	300,000	'
Other income (expense), net	'	'	200,000	100,000	'
Selling And Marketing Expense [Member]	'	'	'	'	'
Investments [Line Items]	'	'	'	'	'
Reimbursement of employee related costs	'	'	'	$800,000	'
Maximum [Member]	'	'	'	'	'
Investments [Line Items]	'	'	'	'	'
Useful life of intangible assets	'	'	'10 years	'	'
Minimum [Member]	'	'	'	'	'
Investments [Line Items]	'	'	'	'	'
Useful life of intangible assets	'	'	'3 years	'	'

Investments_Investments_Detail

Investments (Investments) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Oct. 02, 2011
In Thousands, unless otherwise specified
Investments [Abstract]	'	'	'
Cost method investment	$82,690	$82,690	$82,500
Equity method investment	36,628	40,118	'
Total investments	$119,318	$122,808	'

Investments_Activity_In_Equity

Investments (Activity In Equity Method Investment) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments [Abstract]	'	'
Beginning balance	$40,118	'
Investment, January 1, 2012	'	44,050
Share of net income	8,475	5,152
Amortization of basis difference	-2,824	-3,985
Payable to partner	100	'
Cash distributions received	-9,241	-5,099
Ending balance	$36,628	$40,118

Investments_Condensed_Balance_

Investments (Condensed Balance Sheet - Chrome Data Solutions) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Investments [Abstract]	'	'
Current assets	$12,875	$10,577
Non-current assets	31,871	34,053
Total assets	44,746	44,630
Current liabilities	6,257	5,525
Non-current liabilities	1,401	226
Total liabilities	$7,658	$5,751

Investments_Condensed_Results_

Investments (Condensed Results Of Operations - Chrome Data Solutions) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Investments [Abstract]	'	'
Revenue	$47,900	$44,846
Gross profit	33,853	30,809
Net income	$16,951	$10,303

Business_Combinations_Narrativ

Business Combinations (Narrative) (Details)

3 Months Ended

12 Months Ended

0 Months Ended

2 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

15 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

18 Months Ended

0 Months Ended

9 Months Ended

12 Months Ended

0 Months Ended

2 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

12 Months Ended

0 Months Ended

5 Months Ended

12 Months Ended

12 Months Ended

0 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

24 Months Ended

12 Months Ended

24 Months Ended

0 Months Ended

3 Months Ended

11 Months Ended

12 Months Ended

Jun. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Nov. 01, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 01, 2013

Nov. 01, 2013

Oct. 02, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2014

Oct. 02, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2015

Apr. 02, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 01, 2012

Nov. 01, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Oct. 02, 2012

Jun. 30, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Aug. 02, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Oct. 02, 2012

Dec. 31, 2013

Jul. 01, 2011

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Jun. 30, 2013

Jan. 31, 2011

Dec. 31, 2010

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2013

USD ($)

USD ($)

USD ($)

USD ($)

Nexteppe Business Solutions, Inc. [Member]

Nexteppe Business Solutions, Inc. [Member]

Nexteppe Business Solutions, Inc. [Member]

Nexteppe Business Solutions, Inc. [Member]

Nexteppe Business Solutions, Inc. [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

(Ford) iCONNECT DMS [Member]

(Ford) iCONNECT DMS [Member]

(Ford) iCONNECT DMS [Member]

(Ford) iCONNECT DMS [Member]

(Ford) iCONNECT DMS [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

Customer Relationships [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

Minimum [Member]

Maximum [Member]

Forecasted [Member]

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

Forecasted [Member]

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

USD ($)

CAD

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

Minimum [Member]

Maximum [Member]

Forecasted [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Customer Relationships [Member]

USD ($)

USD ($)

USD ($)

USD ($)

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition date

'

'

'

'

'

'

1-Nov-13

'

'

'

'

'

1-Oct-13

'

'

'

'

'

'

1-Oct-13

'

'

'

'

1-Apr-13

'

'

'

'

1-Nov-12

'

'

'

'

1-Oct-12

'

'

'

'

1-Aug-12

'

'

'

'

'

'

1-Jul-11

'

'

'

'

'

'

'

'

'

'

31-Jan-11

'

'

Cash consideration

'

'

'

'

$3,600,000

'

'

'

'

'

$49,400,000

'

'

'

'

'

'

$13,200,000

'

'

'

'

$21,300,000

'

'

'

$6,900,000

6,900,000

'

'

'

'

'

'

'

'

'

$73,800,000

'

'

'

'

'

$23,451,000

'

'

'

'

'

'

'

'

'

'

$125,500,000

'

'

'

'

'

Professional fees associated with acquisition

'

'

'

2,400,000

'

'

300,000

'

'

'

'

'

1,500,000

'

'

'

'

'

'

500,000

'

'

'

'

400,000

'

'

'

'

'

100,000

'

'

'

'

1,000,000

'

'

'

'

900,000

'

'

'

'

'

'

'

1,200,000

'

'

'

'

'

'

500,000

'

'

300,000

'

Cash acquired included in current assets

'

'

'

'

'

'

'

'

'

'

1,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,900,000

'

'

'

'

'

Deferred tax liability included in liabilities assumed

'

'

'

'

'

'

'

'

'

'

9,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

33,500,000

'

'

'

'

'

Intangible assets

'

'

'

'

'

'

'

'

1,300,000

'

31,520,000

'

'

'

'

'

'

4,960,000

'

'

'

'

11,990,000

'

'

'

4,328,000

'

'

'

'

21,840,000

'

'

'

'

'

'

'

'

'

25,340,000

'

13,530,000

'

'

'

'

'

'

'

'

'

'

83,760,000

'

'

'

'

'

Estimated life

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'12 years

'

'

'

'

'

'

'8 years

'

'

'

'

'9 years

'

'

'

'10 years

'

'

'

'

'

'

'10 years

'

'

'

'

'

'4 years

'

'

'

'

'

'

'

'7 years

'

'

'

'

'

'

'

'

'6 years 4 months 24 days

Goodwill

'

317,248,000

270,646,000

200,840,000

2,200,000

'

'

'

'

'

29,930,000

'

'

'

'

'

'

7,296,000

'

'

'

'

9,029,000

'

'

'

2,528,000

'

'

'

'

26,241,000

'

'

'

'

'

'

'

'

'

48,350,000

'

23,427,000

'

'

'

'

'

'

'

'

'

'

74,217,000

'

'

'

'

'

Compensation expense for continued employment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,300,000

'

'

'

'

2,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,200,000

'

'

'

'

'

'

Promissory note to be paid

'

'

'

'

'

'

'

'

'

4,000,000

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,179,000

'

'

5,000,000

5,000,000

11,400,000

10,000,000

'

'

'

'

'

'

'

'

'

'

Interest rate

'

'

'

'

'

'

'

'

'

1.83%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Promissory note, period

'

'

'

'

'

'

'

'

'

'

'

'

'18 years

'

'12 months

'18 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'6 years

'

'

'

'

'

'

'

Revenue

'

481,534,000

388,872,000

353,294,000

'

300,000

'

'

'

'

'

4,000,000

'

'

'

'

'

'

1,700,000

'

'

'

'

6,500,000

'

'

'

'

100,000

'

'

'

'

4,400,000

'

'

'

'

4,500,000

'

'

'

'

'

'

7,000,000

'

'

'

'

'

'

'

'

'

'

57,700,000

'

'

'

Recorded gain in other income

'

614,000

-5,528,000

1,769,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total consideration, net of cash acquired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

48,700,000

'

'

'

'

'

'

'

'

'

'

'

36,407,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingent consideration

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000

'

1,000,000

500,000

1,000,000

'

'

'

'

'

'

'

2,900,000

900,000

900,000

'

'

900,000

'

'

'

'

'

'

'

'

'

'

'

Additional consideration based on performance targets

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recorded income as a result of a decrease in contingent consideration liability

500,000

500,000

900,000

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

900,000

'

'

'

'

'

'

'

'

'

'

'

'

Business acquisition compensation expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

200,000

100,000

'

'

'

'

'

'

'

'

'

'

1,300,000

'

'

1,300,000

'

'

'

'

'

'

'

'

'

'

Net revenue

'

$481,534,000

$388,872,000

$353,294,000

'

$300,000

'

'

'

'

'

$4,000,000

'

'

'

'

'

'

$1,700,000

'

'

'

'

$6,500,000

'

'

'

'

$100,000

'

'

'

'

$4,400,000

'

'

'

'

$4,500,000

'

'

'

'

'

'

$7,000,000

'

'

'

'

'

'

'

'

'

'

$57,700,000

'

'

'

Business_Combinations_Purchase

Business Combinations (Purchase Price Allocation) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 02, 2013	Oct. 02, 2013	Apr. 02, 2013	Nov. 01, 2012	Oct. 02, 2012	Oct. 02, 2012	Jul. 01, 2011	Jan. 31, 2011
In Thousands, unless otherwise specified				VINtek [Member]	Customer Focused Marketing, Inc. [Member]	Casey & Casey NPS, Inc. [Member]	(Ford) iCONNECT DMS [Member]	ClickMotive LP [Member]	Dealertrack CentralDispatch [Member]	eCarList [Member]	Dealertrack Processing Solutions, Inc. [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Current assets	'	'	'	$5,038	$990	$5,633	$91	$3,862	$224	$414	$33,442
Property and equipment	'	'	'	429	'	32	'	810	101	72	825
Non-current assets	'	'	'	'	'	15	'	'	'	'	6,526
Intangible assets	'	'	'	31,520	4,960	11,990	4,328	21,840	25,340	13,530	83,760
Goodwill	317,248	270,646	200,840	29,930	7,296	9,029	2,528	26,241	48,350	23,427	74,217
Total assets acquired	'	'	'	66,917	13,246	26,699	6,947	52,753	74,015	37,443	198,770
Total liabilities assumed	'	'	'	-13,548	-48	-5,387	'	-2,897	-215	-1,036	-58,406
Net assets acquired	'	'	'	$53,369	$13,198	$21,312	$6,947	$49,856	$73,800	$36,407	$140,364

Business_Combinations_Acquired

Business Combinations (Acquired Intangible Assets And Weighted-Average Useful Lives) (Details) (USD $)

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Oct. 02, 2012

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2013

Oct. 02, 2013

Dec. 31, 2013

Oct. 02, 2013

Dec. 31, 2013

Oct. 02, 2013

Dec. 31, 2013

Oct. 02, 2013

Dec. 31, 2013

Apr. 02, 2013

Apr. 02, 2013

Dec. 31, 2013

Apr. 02, 2013

Dec. 31, 2013

Apr. 02, 2013

Dec. 31, 2013

Apr. 02, 2013

Dec. 31, 2013

Apr. 02, 2013

Dec. 31, 2013

Dec. 31, 2013

Oct. 02, 2012

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2012

Dec. 31, 2013

Oct. 02, 2012

Dec. 31, 2013

Aug. 02, 2012

Aug. 02, 2012

Dec. 31, 2013

Aug. 02, 2012

Dec. 31, 2013

Aug. 02, 2012

Dec. 31, 2013

Aug. 02, 2012

Dec. 31, 2013

Jul. 01, 2011

Jul. 01, 2011

Dec. 31, 2013

Jul. 01, 2011

Dec. 31, 2013

Jul. 01, 2011

Dec. 31, 2013

Jul. 01, 2011

Dec. 31, 2013

Jan. 31, 2011

Jan. 31, 2011

Dec. 31, 2013

Jan. 31, 2011

Dec. 31, 2013

Jan. 31, 2011

Dec. 31, 2013

Jan. 31, 2011

Dec. 31, 2013

Jan. 31, 2011

Dec. 31, 2013

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

VINtek [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Customer Focused Marketing, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

Casey & Casey NPS, Inc. [Member]

(Ford) iCONNECT DMS [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

ClickMotive LP [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

Dealertrack CentralDispatch [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

eCarList [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Dealertrack Processing Solutions, Inc. [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

State DMV Relationships [Member]

State DMV Relationships [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

Customer Relationships [Member]

Customer Relationships [Member]

Technology [Member]

Technology [Member]

Non-Compete Agreements [Member]

Non-Compete Agreements [Member]

Trade Names [Member]

Trade Names [Member]

State DMV Relationships [Member]

State DMV Relationships [Member]

Acquired Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total acquired identifiable intangible assets, Amount

$31,520

$25,600

'

$4,400

'

$920

'

$600

'

$4,960

$1,170

'

$2,700

'

$130

'

$960

'

$11,990

$6,000

'

$1,900

'

$590

'

$1,900

'

$1,600

'

'

$21,840

$12,500

'

$7,600

'

$240

'

$1,500

'

$25,340

$7,930

'

$14,200

'

$410

'

$2,800

'

$13,530

$4,500

'

$6,500

'

$730

'

$1,800

'

$83,760

$43,900

'

$27,500

'

$5,180

'

$990

'

$6,190

'

Weighted-Average Useful Life

'

'

'12 years

'

'5 years

'

'5 years

'

'5 years

'

'

'8 years

'

'6 years

'

'5 years

'

'5 years

'

'

'9 years

'

'4 years

'

'6 years

'

'10 years

'

'8 years

'10 years

'

'

'10 years

'

'8 years

'

'5 years

'

'8 years

'

'

'4 years

'

'7 years

'

'4 years

'

'7 years

'

'

'7 years

'

'4 years

'

'5 years

'

'7 years

'

'

'6 years 4 months 24 days

'

'5 years

'

'3 years

'

'3 years

'

'6 years

Business_Combinations_Initial_

Business Combinations (Initial Purchase Price Allocation) (Details) (eCarList [Member], USD $)	0 Months Ended	12 Months Ended			24 Months Ended
In Thousands, unless otherwise specified	Jul. 01, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013
eCarList [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Cash consideration	$23,451	'	'	'	'
Fair value of note payable	10,179	5,000	5,000	11,400	10,000
Discount on note payable	-123	'	'	'	'
Fair value of contingent consideration	2,900	'	'	'	'
Total purchase price	$36,407	'	'	'	'

Business_Combinations_Unaudite

Business Combinations (Unaudited Pro Forma Summary Of Operations) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Business Combinations [Abstract]	'	'
Net revenue	$502,547	$433,746
Net income	$7,817	$25,705
Basic net income per share	$0.18	$0.60
Diluted net income per share	$0.17	$0.58

Accrued_Liabilities_Other_Comp

Accrued Liabilities - Other (Components Of Other Accrued Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accrued Liabilities - Other [Abstract]	'	'
Professional fees	$5,295	$2,564
Customer deposits	2,368	2,360
Computer and office equipment, furniture and fixtures	1,495	968
Revenue share	1,510	1,096
Acquisition-related compensation	647	1,667
Sales taxes	2,087	779
Interest payable	981	1,439
State DMV transaction fees	695	620
Software licenses and maintenance contracts	278	1,071
Utilities and occupancy	589	455
Marketing	370	351
Other	4,969	3,500
Total accrued liabilities - other	$21,284	$16,870

Senior_Convertible_Notes_Narra

Senior Convertible Notes (Narrative) (Details) (USD $)

3 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

Share data in Thousands, except Per Share data, unless otherwise specified

Dec. 31, 2013

Sep. 30, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Mar. 05, 2012

Dec. 31, 2013

Dec. 31, 2012

Feb. 28, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

1.50% Senior Convertible Notes Due 2017 [Member]

1.50% Senior Convertible Notes Due 2017 [Member]

1.50% Senior Convertible Notes Due 2017 [Member]

1.50% Senior Convertible Notes Due 2017 [Member]

First Circumstance [Member]

Second Circumstance [Member]

Third Circumstance [Member]

Fourth Circumstance [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior convertible notes issued, aggregate principal amount

'

'

'

'

'

$200,000,000

$200,000,000

$200,000,000

'

'

'

'

'

Interest rate of senior convertible notes

'

'

'

'

'

1.50%

1.50%

'

'

'

'

'

'

Net proceeds from the offering

'

'

'

'

'

178,800,000

'

'

'

'

'

'

'

Maturity date of senior convertible notes

'

'

'

'

'

'

15-Mar-17

'

'

'

'

'

'

Repurchase price percentage of principal amount

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

Number of days immediately preceding, but excluding, the declaration date for such distribution

'

'

'

'

'

'

'10 days

'

'

'

'10 days

'

'

Senior convertible notes, initial conversion rate

'

'

'

'

'

'

0.0267618

'

'

'

'

'

'

Senior convertible notes, initial conversion price

$37.37

'

$37.37

'

'

'

$37.37

'

'

'

'

'

'

Senior convertible notes, conversion premium

'

'

'

'

'

'

33.50%

'

'

'

'

'

'

Closing sale price of common stock

'

'

'

'

'

'

'

'

$27.99

'

'

'

'

Percentage of common stock closing price of the current conversion price

'

'

'

'

'

'

'

'

'

130.00%

'

'

'

Number of trading days out of total consecutive trading days

'

'

'

'

'

'

'

'

'

'20 days

'

'

'

Number of consecutive trading days

'

'

'

'

'

'

'

'

'

'30 days

'

'

'

Number of trading days or less from the declaration of stock rights, options or warrants to purchase share

'

'

'

'

'

'

'

'

'

'

'45 days

'

'

Percentage of distribution per share value of closing sale price of common stock

'

'

'

'

'

'

'

'

'

'

'

10.00%

'

Number of consecutive business days

'

'

'

'

'

'

'

'

'

'

'

'

'5 days

Number of days in consecutive trading period

'

'

'

'

'

'

'

'

'

'

'

'

'10 days

Percentage of closing sales price of common stock in ten trading day period

'

'

'

'

'

'

'

'

'

'

'

'

98.00%

Estimated fair value of the liability component

156,100,000

'

156,100,000

'

'

'

'

'

'

'

'

'

'

Equity component

'

'

'

'

'

'

43,900,000

'

'

'

'

'

'

Debt instrument amortization period (in years)

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

Effective interest rate used to amortize the debt discount

6.75%

'

6.75%

'

'

'

'

'

'

'

'

'

'

"If-converted value" in excess of principal

'

'

'

'

'

'

57,300,000

'

'

'

'

'

'

Capitalized debt issuance costs related to the issuance of the Notes

'

'

'

7,723,000

1,908,000

'

5,400,000

'

'

'

'

'

'

Issuance costs remaining to be amortized

'

'

'

'

'

'

3,700,000

'

'

'

'

'

'

Convertible note hedges, recorded as a reduction to additional paid-in capital

'

'

43,900,000

'

'

'

'

'

'

'

'

'

'

Warrant transactions, initial strike price

$46.18

'

$46.18

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of warrant

'

'

'

$29,740,000

'

'

'

'

'

'

'

'

'

Warrant transaction expiration date

'

'

'2017

'

'

'

'

'

'

'

'

'

'

Diluted shares from convertible debt

546

288

'

'

'

'

'

'

'

'

'

'

'

Senior_Convertible_Notes_Sched

Senior Convertible Notes (Schedule Of Net Carrying Amount Of The Liability Component Of The Notes) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Mar. 05, 2012
Debt Instrument [Line Items]	'	'	'
Net carrying value	$170,317,000	$162,279,000	'
1.50% Senior Convertible Notes Due 2017 [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Principal amount	200,000,000	200,000,000	200,000,000
Unamortized discount	29,683,000	37,721,000	'
Net carrying value	$170,317,000	$162,279,000	'

Senior_Convertible_Notes_Sched1

Senior Convertible Notes (Schedule Of Interest Expense Associated With The Notes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Mar. 05, 2012
				1.50% Senior Convertible Notes Due 2017 [Member]	1.50% Senior Convertible Notes Due 2017 [Member]	1.50% Senior Convertible Notes Due 2017 [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'
Cash interest expense (1.50% coupon rate)	'	'	'	$3,000	$2,458	'
Amortization of debt issuance costs and debt discount	9,482	7,566	333	9,032	6,989	'
Total interest expense	'	'	'	$12,032	$9,447	'
Interest rate of senior convertible notes	'	'	'	1.50%	'	1.50%

Revolving_Credit_Facility_Deta

Revolving Credit Facility (Details) (Revolving Credit Facility [Member], USD $)	0 Months Ended	12 Months Ended
	Apr. 20, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 29, 2012
Line of Credit Facility [Line Items]	'	'	'	'	'
Revolving credit facility	$125,000,000	'	'	'	$200,000,000
Additional funds available	100,000,000	'	'	'	'
Issuance costs	'	2,700,000	'	'	'
Capitalized debt issuance costs remaining	'	1,400,000	'	'	'
Debt issuance costs amortized to interest expense	'	400,000	500,000	300,000	'
Interest on credit facility	'	400,000	500,000	300,000	'
Credit facility amount outstanding	'	0	'	'	'
Minimum [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Credit commitment fees basis points	'	0.25%	'	'	'
Maximum [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Credit commitment fees basis points	'	0.40%	'	'	'
Canadian Sublimit [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Revolving credit facility	$25,000,000	'	'	'	'
ABR Loans [Member] | Minimum [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread over LIBOR or Prime rate	'	1.50%	'	'	'
ABR Loans [Member] | Maximum [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread over LIBOR or Prime rate	'	2.25%	'	'	'
Eurodollar/CDOR Loans [Member] | Minimum [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread over LIBOR or Prime rate	'	0.50%	'	'	'
Eurodollar/CDOR Loans [Member] | Maximum [Member]	'	'	'	'	'
Line of Credit Facility [Line Items]	'	'	'	'	'
Spread over LIBOR or Prime rate	'	1.25%	'	'	'

Retirement_Plans_Details

Retirement Plans (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Number of retirement plans	2	'	'
401(k) Plan [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Additional contribution by employer	$0.80	$0.80	$1.20
Percentage of additional matching contribution	36.00%	52.00%	127.00%
Total contributions under retirement plan	3.1	2.3	2.1
Registered Retirement Savings Plan [Member]	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'
Total contributions under retirement plan	$0.60	$0.50	$0.50
Percentage of employer matching contribution on eligible earnings	100.00%	'	'
Maximum employee earnings percentage matched by the Company	6.00%	'	'

Stock_Option_And_Deferred_Comp2

Stock Option And Deferred Compensation Plans (Narrative) (Details) (USD $)

12 Months Ended

12 Months Ended

0 Months Ended

12 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Sep. 04, 2009

Dec. 31, 2012

Aug. 07, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

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. 31, 2013

Dec. 31, 2013

2005 Incentive Award Plan [Member]

2005 Incentive Award Plan [Member]

2005 Incentive Award Plan [Member]

Employee Stock Purchase Plan [Member]

SOEP [Member]

SOEP [Member]

SOEP [Member]

Restricted Stock Units [Member]

Restricted Stock Units [Member]

Restricted Stock Units [Member]

Performance Stock Units [Member]

ANI Performance Award [Member]

ANI Performance Award [Member]

TSR Performance Award [Member]

TSR Performance Award [Member]

TSR Performance Award [Member]

Revenue Performance Awards [Member]

Stock Options [Member]

Management [Member]

Directors [Member]

Directors [Member]

Minimum [Member]

Maximum [Member]

After 6 Months From The New Grant Date [Member]

After 12 Months From The New Grant Date [Member]

Each Month Thereafter [Member]

2005 Incentive Award Plan [Member]

Performance Stock Units [Member]

Performance Stock Units [Member]

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

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares authorized for issuance

'

'

16,405,847

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares available for future issuance

'

'

3,258,913

'

'

1,083,834

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price for stock options outstanding and exercisable, Minimum

'

'

$2.80

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Exercise price for stock options outstanding and exercisable, Maximum

'

'

$47.98

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Intrinsic value of stock options exercised

'

'

$12,800,000

$11,300,000

$10,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of purchase price of shares of common stock

'

'

'

'

'

95.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares issued

'

'

'

'

'

416,166

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Shares of common stock reserved

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

150,000

75,000

'

'

'

'

'

'

Deferred stock units recorded under a memo account and distributed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,177

12,497

'

'

'

'

'

'

Common stock available for distribution

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

147,823

'

'

'

'

'

'

'

Deferred stock units recorded under memo account

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

62,503

3,107

'

'

'

'

'

Percentage of performance stock units delivered subject to adjustment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

150.00%

'

'

'

Percentage of performance stock award allocated

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

50.00%

50.00%

50.00%

50.00%

50.00%

'

'

'

'

'

'

'

'

'

Active service period

'

'

'

'

'

'

'

'

'

'

'

'

'36 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total fair value of the entire Performance Award prior to estimated forfeitures

'

'

'

'

'

'

'

'

'

7,104,000

9,285,000

5,470,000

1,727,000

1,000,000

900,000

1,100,000

1,000,000

1,000,000

1,100,000

'

'

'

'

'

'

'

'

'

Number of shares of long-term performance equity awards cancelled

'

'

'

'

'

'

'

'

'

77,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares of long-term performance equity awards vested

'

'

'

'

'

'

'

'

'

385,000

'

'

99,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Outstanding options exercise price per share

$20.50

$18.73

'

'

'

'

'

'

$22.82

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of eligible options tendered

'

'

'

'

'

'

571,763

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock options granted in exchange for the Eligible Options surrendered

421,000

'

'

'

'

'

435,247

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Vesting percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

25.00%

2.08%

Exchanged options granted, vesting period description

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Exchanged options granted under the SOEP vested 25% after six months from the new grant date, 25% after twelve months from the new grant date, and 1/48 each month thereafter.

'

'

'

'

'

'

'

'

Incremental fair value stock-based compensation expense

'

'

'

'

'

'

'

$54,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stock_Option_And_Deferred_Comp3

Stock Option And Deferred Compensation Plans (Summary Of Stock-Based Compensation Expense By Expense Category) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	$14,391	$13,592	$11,612
Cost Of Revenue [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	2,828	2,429	1,791
Product Development [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	727	749	735
Selling, General And Administrative [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Stock-based compensation expense	$10,836	$10,414	$9,086

Stock_Option_And_Deferred_Comp4

Stock Option And Deferred Compensation Plans (Summary Of Activity Under Stock Option Plans) (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
Stock Option And Deferred Compensation Plans [Abstract]	'
Number of Options, Outstanding as of January 1, 2013	3,817
Number Of Options, Options granted	421
Number of Options, Options exercised	-624
Number of Options, Options forfeited	-98
Number of Options, Options expired	-3
Number of Options, Outstanding as of December 31, 2013	3,513
Weighted-Average Exercise Price, Outstanding as of January 1, 2013	$18.73
Weighted-Average Exercise Price, Options granted	$29.10
Weighted-Average Exercise Price, Options exercised	$14.68
Weighted-Average Exercise Price, Options forfeited	$25.46
Weighted-Average Exercise Price, Options expired	$29.20
Weighted-Average Exercise Price, Outstanding as of December 31, 2013	$20.50
Weighted-Average Remaining Contractual Life, Outstanding as of December 31, 2013 (in years)	'3 years 1 month 6 days
Aggregate Intrinsic Value, Outstanding as of December 31, 2013	$96,887
Number of Options, Vested and unvested expected to vest as of December 31, 2013	3,486
Weighted-Average Exercise Price, Vested and unvested expected to vest as of December 31, 2013	$20.44
Weighted-Average Remaining Contractual Life, Vested and unvested expected to vest as of December 31, 2013 (in years)	'3 years 29 days
Aggregate Intrinsic Value, Vested and expected to vest as of December 31, 2013	96,360
Number of Options, Options exercisable as of December 31, 2013	2,653
Weighted-Average Exercise Price, Options exercisable as of December 31, 2013	$18.59
Weighted-Average Remaining Contractual Life, Options exercisable as of December 31, 2013 (in years)	'2 years 4 months 2 days
Aggregate Intrinsic Value, Options exercisable as of December 31, 2013	$78,245

Stock_Option_And_Deferred_Comp5

Stock Option And Deferred Compensation Plans (Summary Of Non-Vested Shares Of Restricted Common Stock Units And Performance Stock Units) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Restricted Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of awards, Non-vested awards as of January 1, 2013	959,000
Number of awards, Awards granted	466,000
Number of Awards, Awards vested	-385,000
Number of Awards, Awards canceled/expired/forfeited	-77,000
Number of Awards, Non-vested awards as of December 31, 2013	963,000
Weighted Average Grant Date Fair value, Non-vested awards as of January 1, 2013	$21.21
Weighted Average Grant Date Fair Value, Awards granted	$30
Weighted Average Grant Date Fair Value, Awards vested	$18.47
Weighted Average Grant Date Fair Value, Awards canceled/expired/forfeited	$26.98
Weighted Average Grant Date Fair value, Non-vested awards as of December 31, 2013	$26.09
Performance Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Number of awards, Non-vested awards as of January 1, 2013	269,000
Number of awards, Awards granted	72,000
Number of Awards, Awards vested	-99,000
Number of Awards, Adjustment for performance achieved	28,000
Number of Awards, Non-vested awards as of December 31, 2013	270,000
Weighted Average Grant Date Fair value, Non-vested awards as of January 1, 2013	$21.41
Weighted Average Grant Date Fair Value, Awards granted	$29.62
Weighted Average Grant Date Fair Value, Awards vested	$17.40
Weighted Average Grant Date Fair Value, Adjustment for performance achieved	$23.19
Weighted Average Grant Date Fair value, Non-vested awards as of December 31, 2013	$25.25

Stock_Option_And_Deferred_Comp6

Stock Option And Deferred Compensation Plans (Summary Of Total Fair Value For Vested Restricted Common Stock Units, Performance Stock Units And Restricted Common Stock Awards) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Total fair value of vested restricted common stock units, performance stock units and restricted common stock awards	$7,104	$9,285	$5,470
Performance Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Total fair value of vested restricted common stock units, performance stock units and restricted common stock awards	1,727	'	'
Restricted Common Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Total fair value of vested restricted common stock units, performance stock units and restricted common stock awards	'	'	$701

Stock_Option_And_Deferred_Comp7

Stock Option And Deferred Compensation Plans (Summary, By Performance, Potential Threshold And Maximum Stock Units) (Details)	12 Months Ended
	Dec. 31, 2013
2010 Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Threshold ANI	25.00%
Maximum ANI	125.00%
Threshold TSR	0.00%
Maximum TSR	150.00%
2011 Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Threshold ANI	25.00%
Maximum ANI	125.00%
Threshold TSR	0.00%
Maximum TSR	150.00%
2012 Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Threshold ANI	25.00%
Maximum ANI	125.00%
Threshold TSR	0.00%
Maximum TSR	150.00%
2013 Plan [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Threshold Revenue	25.00%
Maximum Revenue	150.00%
Threshold TSR	25.00%
Maximum TSR	150.00%

Stock_Option_And_Deferred_Comp8

Stock Option And Deferred Compensation Plans (Summary, By Performance Award Type, Status of Performance Stock Units For Grants) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue Performance Awards [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Target Number of PSUs	36,948	'	'
Percent of Goal Achieved	118.00%	'	'
Adjusted Number of PSUs Based on Goal Achievement	43,596	'	'
ANI Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Target Number of PSUs	'	35,495	43,290
Cancelled PSUs	'	'	'
Percent of Goal Achieved	'	103.00%	125.00%
Adjusted Number of PSUs Based on Goal Achievement	'	36,556	54,111
Awards cancelled and subsequently reissued	'	'	4,630
TSR Performance Award [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Target Number of PSUs	35,065	35,495	43,290
Cancelled PSUs	'	'	'	[1]
Percent of Goal Achieved	'	'	150.00%
Adjusted Number of PSUs Based on Goal Achievement	'	'	64,934
Awards cancelled and subsequently reissued	'	'	4,630
[1]	In 2011, 4,630 of 2011 TSR Performance Awards were cancelled and subsequently reissued.

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)

3 Months Ended

Mar. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

U.S. Deferred Tax Assets, Excluding Deferred Tax Liabilities Related To Indefinite-Lived Assets [Member]

Allowance Against Foreign Tax Credits [Member]

Allowance Against Foreign Tax Credits [Member]

Allowance Against Capital Loss Carry Forward And Other Adjustments [Member]

Allowance Against Capital Loss Carry Forward And Other Adjustments [Member]

Federal [Member]

Federal [Member]

Federal [Member]

State [Member]

State [Member]

Foreign [Member]

Foreign [Member]

Subject To Limitation [Member]

Allowance Against State Net Operating Losses [Member]

Allowance Against State Net Operating Losses [Member]

Allowance Against Foreign Tax Credits [Member]

Allowance Against Foreign Tax Credits [Member]

Income Tax Contingency [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Valuation allowance

'

$3,270,000

$4,094,000

$28,400,000

'

'

'

'

'

'

'

'

'

'

'

Increase (reduction) in valuation allowance

-24,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net operating loss carryforwards

'

7,200,000

4,700,000

'

'

'

'

'

25,600,000

29,500,000

4,200,000

1,400,000

1,300,000

'

'

Addition to stockholders' equity and reduction to current tax payable, if and when the carryovers and net operating losses are utilized

'

4,000,000

3,100,000

'

'

'

'

'

'

'

'

'

'

'

'

Tax credit carryforwards

'

1,200,000

2,000,000

'

1,300,000

1,300,000

700,000

800,000

'

'

'

'

'

1,200,000

2,000,000

Undistributed foreign earnings

'

31,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued interest and penalties related to tax positions

'

100,000

100,000

'

'

'

'

'

'

'

'

'

'

'

'

Liability for uncertain tax positions that would affect the effective rate upon resolution

'

$500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Income_Taxes_Components_Of_Inc

Income Taxes (Components Of Income (Loss) Before Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
United States	($8,694)	$21,091	$55,376
Canada	13,261	11,612	7,356
Total income before income taxes	$4,567	$32,703	$62,732

Income_Taxes_Components_Of_Pro

Income Taxes (Components Of (Provision For) Benefit From Income Taxes) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Current tax, Federal	($4,993)	($6,859)	$1,108
Current tax, State and local	-1,155	-1,767	-454
Current tax, Canada	-3,864	-2,872	-1,621
Total current tax	-10,012	-11,498	-967
Deferred tax, Federal	8,892	-1,131	1,412
Deferred tax, State and local	2,069	729	2,232
Deferred tax, Canada	378	-349	-274
Total deferred tax	11,339	-751	3,370
(Provision for) benefit from income taxes, net	$1,327	($12,249)	$2,403

Income_Taxes_Deferred_Tax_Asse

Income Taxes (Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Taxes [Abstract]	'	'
Net operating loss carryforwards	$8,877	$10,266
Stock-based compensation	17,525	17,416
Acquired intangibles	8,010	13,809
Tax credits	4,433	3,516
Capital loss	673	887
Deferred revenue	3,495	2,736
Sales and receivables allowances	2,469	1,697
Other	4,540	1,790
Total deferred tax assets	50,022	52,117
Acquired intangibles	-24,362	-28,194
Capitalized software and website development	-10,532	-7,600
Depreciation and amortization	-8,640	-9,993
Investments in disposed subsidiaries	-28,595	-31,565
Other	-5,342	-3,047
Total deferred tax (liabilities)	-77,471	-80,399
Deferred tax (liabilities), net	-27,449	-28,282
Deferred tax asset valuation allowance	-3,270	-4,094
Total deferred tax (liabilities), net	($30,719)	($32,376)

Income_Taxes_Analysis_Of_The_E

Income Taxes (Analysis Of The Effective Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Pre-tax book income	35.00%	35.00%	35.00%
State taxes	-7.50%	2.50%	1.50%
Foreign rate differential	-25.30%	-2.60%	-1.10%
Non-deductible expenses	7.30%	0.50%	0.20%
Valuation allowance	-19.00%	-0.50%	-36.90%
Deferred tax liability impact of disposals and contributions	'	3.70%	0.60%
Adjust tax balances for filed returns	-2.20%	-0.60%	-1.90%
Transaction costs	9.90%	'	'
General business and other tax credits	-33.90%	'	-0.60%
Executive compensation	7.80%	0.80%	0.20%
State rate change	'	-1.50%	'
Other	-1.20%	0.20%	-0.80%
Total	-29.10%	37.50%	-3.80%

Income_Taxes_Reconciliation_Of

Income Taxes (Reconciliation Of Liability For Uncertain Tax Positions) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]	'	'	'
Uncertain tax positions, Beginning balance	$883	$793	$1,031
Additions	292	226	244
Settlements	'	'	-482
Expired statute of limitations / settlements	-249	-136	'
Uncertain tax positions, Ending balance	$926	$883	$793

Segment_Information_Supplement

Segment Information (Supplemental Disclosure Of Revenue By Service Type) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]	'	'	'
Transaction services revenue	$276,861,000	$225,011,000	$184,892,000
Subscription services revenue	181,731,000	145,148,000	146,621,000
Other	22,942,000	18,713,000	21,781,000
Net revenue	481,534,000	388,872,000	353,294,000
Canada [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Long-lived assets	$39,700,000	$44,800,000	$35,500,000
Canada [Member] | Sales [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Percentage of concentration risk	9.00%	10.00%	9.00%

Commitments_And_Contingencies_1

Commitments And Contingencies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Loss Contingencies [Line Items]	'	'	'
Lease expiration date	1-May-23	'	'
Lease renewal period	'5 years	'	'
Operating lease expense	$7,900,000	$7,400,000	$7,300,000
Expected buy-out of existing lease	4,000,000	'	'
Annual rental payments through 2018	2,800,000	'	'
AAX service credits	2,500,000	'	'
AAX service credits expiration date	31-Dec-15	'	'
AAX service credits utilized	600,000	800,000	900,000
AAX service credits remaining	0	'	'
Retail Sales Tax [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Estimate of possible loss	900,000	'	'
Estimate of possible loss for additional assessments in subsequent periods	700,000	'	'
Severance [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Estimate of possible loss	6,300,000	'	'
Change Of Control And Employee Severance [Member]	'	'	'
Loss Contingencies [Line Items]	'	'	'
Estimate of possible loss	$2,400,000	'	'

Commitments_And_Contingencies_2

Commitments And Contingencies (Summary Of Future Minimum Rental Payments Under The Noncancelable Operating Leases) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies [Abstract]	'
2014	$10,863
2015	9,327
2016	7,952
2017	6,299
2018	5,943
Thereafter	11,943
Total	$52,327

Commitments_And_Contingencies_3

Commitments And Contingencies (Summary Of Leased Property Under Capital Leases) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Capital Leased Assets [Line Items]	'	'
Capital leases, gross	$407	$458
Less: Accumulated depreciation	-83	-179
Total capital leases, net	324	279
Computer And Office Equipment [Member]	'	'
Capital Leased Assets [Line Items]	'	'
Capital leases, gross	407	351
Furniture And Fixtures [Member]	'	'
Capital Leased Assets [Line Items]	'	'
Capital leases, gross	'	$107

Commitments_And_Contingencies_4

Commitments And Contingencies (Summary Of Future Minimum Rental Payments Under The Capital Leases) (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies [Abstract]	'
2014	$100
2015	98
2016	74
2017	32
2018	'
Total minimum lease payments	304
Less: Amount representing taxes, included in total minimum lease payments	-24
Net minimum lease payments	280
Less: Amount representing interest	'
Present value of net minimum lease payments	$280

Agreements_Impacting_ContraRev1

Agreements Impacting Contra-Revenue (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	31-May-10	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Jan. 31, 2014
			All Customers [Member]	All Customers [Member]	Ally Financial [Member]	Ally Financial [Member]	Ally Financial [Member]	Ally Financial [Member]	America Honda Finance Corporation [Member]	America Honda Finance Corporation [Member]
										Subsequent Event [Member]
Agreements Impacting Contra-Revenue [Line Items]	'	'	'	'	'	'	'	'	'	'
Payment for financing option	'	'	'	'	$15,000,000	$15,000,000	'	'	'	'
Approximate duration of expected benefit, years	'	'	'	'	'	'5 years	'	'	'	'
Contra revenue from strategic agreement	'	'	'	'	'	3,100,000	3,100,000	3,200,000	'	'
Unamortized payment for financing option	'	'	8,600,000	12,600,000	'	'	'	'	'	'
Prepaid expenses and other current assets	21,533,000	19,142,000	4,900,000	4,400,000	'	'	'	'	'	'
Other long-term assets	14,616,000	16,684,000	3,700,000	8,200,000	'	'	'	'	'	'
Maximum reimbursable amount of qualified expenses	'	'	'	'	'	'	'	'	11,000,000	'
Qualified expenses paid	'	'	'	'	'	'	'	'	$300,000	$5,000,000

Contribution_To_Chrome_Data_So2

Contribution To Chrome Data Solutions And Disposal Of ALG (Narrative) (Details) (USD $)	12 Months Ended				9 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Oct. 02, 2011	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2012
					ALG [Member]	ALG [Member]	ALG [Member]	TrueCar [Member]	TrueCar [Member]	Chrome Data Solutions [Member]	Chrome Data Solutions [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Ownership interest percentage	'	'	'	'	'	'	'	'	'	50.00%	'
Percentage of equity interest	'	'	'	'	'	'	'	15.00%	'	'	'
Percentage of equity interest, maximum	'	'	'	'	'	'	'	19.90%	'	'	'
Additional cash investment	'	'	'	'	'	$7,500,000	'	$7,500,000	'	'	'
Estimated carrying value of the investment	82,690,000	82,690,000	'	82,500,000	'	'	'	88,000,000	'	'	'
Fair value of the shares received	'	'	'	'	'	75,000,000	'	82,500,000	'	'	'
Fair value of warrant received	'	'	'	'	'	5,500,000	'	5,500,000	'	'	'
Fair value of data license	'	'	'	'	'	5,600,000	'	5,600,000	'	'	'
Economic life	'	'	'	'	'	'	'	'5 years	'	'	'
Measurement period of additional payment (in years)	'3 years	'	'	'	'	'	'	'	'	'	'
Gross cash proceeds	'	'	'	'	'	'	'	'	125,000,000	'	'
Maximum payment	'	'	'	'	'	'	'	'	7,000,000	'	'
Revenue	481,534,000	388,872,000	353,294,000	'	7,600,000	'	8,600,000	'	'	'	'
Professional fees associated with acquisition	'	'	2,400,000	'	'	'	'	'	'	'	'
Pre-tax gain	'	'	'	'	'	$47,321,000	'	'	'	'	$27,693,000

Contribution_To_Chrome_Data_So3

Contribution To Chrome Data Solutions And Disposal Of ALG (Schedule Of Pre-Tax Gain Of Chrome Data Solutions) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Schedule of Equity Method Investments [Line Items]	'	'	'
Property and equipment	$31,866	$27,407	'
Goodwill	317,248	270,646	200,840
Intangible assets	135,554	117,599	'
Chrome Data Solutions [Member]	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'
Cash	'	1,750	'
Property and equipment	'	3,947	'
Goodwill	'	7,874	'
Intangible assets	'	2,017	'
Other assets and liabilities, net	'	769	'
Carrying value of net assets	'	16,357	'
Total consideration received (50% of the fair value of shares received)	'	44,050	'
Pre-tax gain	'	$27,693	'
Percentage of shares received	50.00%	'	'

Contribution_To_Chrome_Data_So4

Contribution To Chrome Data Solutions And Disposal Of ALG (Schedule Of Pre-Tax Gain Of ALG) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011
In Thousands, unless otherwise specified				ALG [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'
Fair value of the shares received	'	'	'	$75,000
Additional cash investment	'	'	'	7,500
Fair value of warrant received	'	'	'	5,500
Fair value of data license	'	'	'	5,600
Consideration received	'	'	'	93,600
Cash	'	'	'	7,500
Property and equipment	31,866	27,407	'	1,753
Goodwill	317,248	270,646	200,840	33,127
Intangible assets	135,554	117,599	'	2,531
Other assets and liabilities, net	'	'	'	1,368
Carrying value of net assets	'	'	'	46,279
Pre-tax gain	'	'	'	$47,321

Acquisition_of_Dealercom_Detai

Acquisition of Dealer.com (Details) (USD $)	12 Months Ended				3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended
Share data in Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2014	Mar. 31, 2014
		Secured Debt [Member]	First Priority Term Loan Facility [Member]	First Priority Secured Revolving Credit Facility [Member]	Dealer.com [Member]	Dealer.com [Member]	Forecasted [Member]	Forecasted [Member]	Common Stock [Member]
			Secured Debt [Member]	Secured Debt [Member]			Dealer.com [Member]	Dealer.com [Member]	Forecasted [Member]
									Dealer.com [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]	'	'	'	'	'	'	'	'	'
Termination fee	'	'	'	'	$25,000,000	$25,000,000	'	'	'
Stock consideration	'	'	'	'	'	'	'	'	8.7
Cash consideration	'	'	'	'	'	'	620,000,000	'	'
Professional fees associated with acquisition	2,400,000	'	'	'	2,400,000	2,400,000	'	6,000,000	'
Financing options to fund merger	'	$825,000,000	$575,000,000	$200,000,000	'	'	'	'	'

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Oct. 02, 2011	Dec. 31, 2013	Feb. 19, 2014	Feb. 19, 2013
				TrueCar [Member]	Subsequent Event [Member]	Subsequent Event [Member]
					TrueCar [Member]	TrueCar [Member]
Subsequent Event [Line Items]	'	'	'	'	'	'
Proceeds from sale of cost method investment	'	'	'	'	'	$92,500,000
Cost method investment	82,690,000	82,690,000	82,500,000	82,700,000	'	'
Pre-tax gain on sale of cost method investment	'	'	'	'	'	9,800,000
Tax on gain on sale of cost method investment	'	'	'	'	22,000,000	'
Taxable gain on sale of cost method investment	'	'	'	'	$58,800,000	'

Valuation_And_Qualifying_Accou1

Valuation And Qualifying Accounts (Details) (USD $)

3 Months Ended

12 Months Ended

Mar. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2011

Allowance For Doubtful Accounts [Member]

Allowance For Doubtful Accounts [Member]

Allowance For Doubtful Accounts [Member]

Allowance For Sales Credits [Member]

Allowance For Sales Credits [Member]

Allowance For Sales Credits [Member]

Deferred Tax Valuation Allowance [Member]

Deferred Tax Valuation Allowance [Member]

Deferred Tax Valuation Allowance [Member]

Deferred Tax Assets Related To Capital Loss Carryforwards [Member]

Deferred Tax Assets Related To Capital Loss Carryforwards [Member]

Deferred Tax Assets Related To Capital Loss Carryforwards [Member]

Unrealizable Foreign Tax Credit Carryovers [Member]

Deferred Tax Assets Related To State And local Net Operating Loss Carryovers [Member]

Deferred Tax Assets Related To State And local Net Operating Loss Carryovers [Member]

Deferred Tax Assets Related To Acquisitions And Disposals [Member]

Deferred Tax Assets Related To Deferred Tax Assets And Liability Positions [Member]

Valuation And Qualifying Accounts Disclosure [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at Beginning of Period

'

$1,080,000

$1,435,000

$652,000

$3,478,000

$3,667,000

$2,606,000

$4,094,000

[1]

$4,198,000

[2]

$32,637,000

'

'

'

'

'

'

'

'

Additions Charged to Expenses

'

2,937,000

2,519,000

2,324,000

7,075,000

4,787,000

4,684,000

329,000

134,000

121,000

'

'

'

'

'

'

'

'

Deductions

'

-2,802,000

-2,725,000

-2,017,000

-5,124,000

-4,988,000

-3,699,000

-1,153,000

-238,000

-28,560,000

'

'

'

'

'

'

'

'

Other Adjustments

'

280,000

-149,000

476,000

'

12,000

76,000

'

'

'

'

'

'

'

'

'

'

'

Balance at End of Period

'

1,495,000

1,080,000

1,435,000

5,429,000

3,478,000

3,667,000

3,270,000

[3]

4,094,000

[1]

4,198,000

[2]

'

'

'

'

'

'

'

'

Increase (reduction) in valuation allowance

($24,500,000)

'

'

'

'

'

'

($800,000)

($100,000)

($28,400,000)

($100,000)

($200,000)

$100,000

($700,000)

$100,000

$100,000

$25,100,000

($3,300,000)

[1]

For the year ended December 31, 2012, the deferred tax valuation allowance was reduced by $0.1 million. The deferred tax valuation allowance was reduced by $0.2 million for our capital loss carryforwards, offset by a $0.1 million increase related to state and local net operating loss carryovers and foreign tax credits. We evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets. For further information, please refer to Note 15 in the accompanying notes to the consolidated financial statements included in this Annual Report on Form 10-K.

[2]

For the year ended December 31, 2011, the deferred tax valuation allowance was reduced by $28.4 million including a $25.1 million reduction as a result of the acquisition of Dealertrack Processing Solutions, Inc. and the sale of ALG, Inc. The deferred tax valuation allowance was also reduced by $3.3 million for current year activity of our deferred tax assets and liabilities positions, $0.1 million for our capital loss carryforwards, offset by a $0.1 million increase related to state and local net operating loss carryovers. We evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets. For further information, please refer to Note 15 in the accompanying notes to the consolidated financial statements included in this Annual Report on Form 10-K.

[3]

For the year ended December 31, 2013, the deferred tax valuation allowance was reduced by $0.8 million. The deferred tax valuation allowance was reduced by $0.1 million for our capital loss carryforwards and $0.7 million for foreign tax credits. We evaluated the combined enterprises past and expected future results, including the impact of the future reversal of the acquired deferred tax liabilities, and determined that the future reversal of the acquired deferred tax liabilities would provide sufficient taxable income to support realization of certain of our deferred tax assets. For further information, please refer to Note 15 in the accompanying notes to the consolidated financial statements included in this Annual Report on Form 10-K.