Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Intangible Assets [Abstract]

Intangible Assets

		March 31, 2013							December 31, 2012
	Life (Years)	Gross Carrying Amount		Accumulated Amortization			Net Balance		Gross Carrying Amount		Accumulated Amortization			Net Balance
Customer relationships	7-15	$	56,854	$	(37,858	)	$	18,996	$	57,040	$	(36,464	)	$	20,576
Acquired technology	8-15		50,876		(26,220	)		24,656		51,067		(25,108	)		25,959
Non-compete agreements	3-6		11,980		(11,740	)		240		12,016		(11,752	)		264
Trademarks			35,383		—			35,383		35,537		—			35,537
Domain names			4,400		—			4,400		4,400		—			4,400
Total		$	159,493	$	(75,818	)	$	83,675	$	160,060	$	(73,324	)	$	86,736