Business Combinations (Tables)

12 Months Ended

Dec. 31, 2011

Business Acquisition [Line Items]

Unaudited Pro Forma Summary Of Operations

	Year Ended December 31,
	2011		2010
	(In thousands, except per share data)
Net revenue	$	357,781	$	300,634
Net income (loss)		38,850		(1,888	)
Basic net income (loss) per share		0.94		(0.05	)
Diluted net income (loss) per share		0.91		(0.05	)

eCarList [Member]

Business Acquisition [Line Items]

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

Purchase Price To The Assets And Liabilities

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		5.5

triVIN Holdings, Inc. [Member]

Business Acquisition [Line Items]

Purchase Price To The Assets And Liabilities

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		5.7

AAX [Member]

Business Acquisition [Line Items]

Purchase Price To The Assets And Liabilities

Current assets	$	489
Property and equipment		1,035
Intangible assets		16,639
Goodwill		15,348
Total assets acquired		33,511
Total liabilities assumed		(2,636	)
Net assets acquired	$	30,875

Acquired Intangible Assets And Weighted-Average Useful Lives

			Weighted-
			Average
	Amount		Useful Life
	(In thousands)		(Years)
Customer relationships	$	7,404		6.5
Technology and database		6,245		4.2
AAX trade names		2,010		7.0
Non-compete agreements		980		4.0
Total acquired identifiable intangible assets	$	16,639		5.5