Goodwill And Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill And Intangible Assets

Changes In Carrying Amount Of Goodwill

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2012		2011		2012		2011
Balance, beginning of period		$	1,240,422	$	964,970	$	1,229,298	$	894,497
Goodwill acquired, including post acquisition adjustments			10,029		186,735		21,940		261,975
Disposals			-		-		(787)		(4,767)
	Balance, end of period	$	1,250,451	$	1,151,705	$	1,250,451	$	1,151,705

Summary Of Amortizable Intangible Assets

		September 30, 2012						December 31, 2011
		Gross						Gross
		Carrying		Accumulated				Carrying		Accumulated
		Amount		Amortization		Net		Amount		Amortization		Net
Deferred financing cost		$	8,291	$	(2,660)	$	5,631	$	6,541	$	(1,838)	$	4,703
Agreements, contracts and other intangible assets			3,448		(2,192)		1,256		3,448		(2,026)		1,422
	Total amortizable intangible assets	$	11,739	$	(4,852)	$	6,887	$	9,989	$	(3,864)	$	6,125