Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

Components And Useful Lives Of Intangibles And Other Assets

Components and useful lives of intangible assets were as follows:

	September 30, 2011					December 31, 2010
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortizable intangible assets:
Customer relationships, contracts and agreements (3 to 46 years)	$	336,709	$	(89,086	)	$	251,418	$	(74,910	)
Noncompete agreements (3 to 15 years)	15,893		(7,900		)	21,165		(11,888		)
Patents (9 years)	750		(181		)	750		(118		)
Other (10 to 15 years)	1,320		(566		)	1,320		(492		)
Total amortizable intangible assets	354,672		(97,733		)	274,653		(87,408		)
Non-amortizable intangible assets —
Trademarks	78,828		—			77,445		—
Total intangible assets	$	433,500	$	(97,733	)	$	352,098	$	(87,408	)

Aggregate Amortization Expense Of Intangibles And Other Assets

Aggregate amortization expense of intangible assets was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2011		2010		2011		2010
Reported in depreciation and amortization	$	7,267	$	4,986	$	17,683	$	14,986

Estimated Amortization Expense

Estimated aggregate amortization expense for the next five years is as follows:

Years Ending December 31:
2012	$	24,716
2013	20,379
2014	19,258
2015	18,371
2016	17,591