Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2012

Other Intangible Assets [Abstract]

Schedule Of Other Intangible Assets

(in thousands)	March 31, 2012			December 31, 2011
Finite-lived intangible assets:
Customer lists	$	70,080		$	69,763
Covenants not to compete		26,274			29,441
Trademarks		10,067			9,551
Patents		2,840			2,840
		109,261			111,595
Accumulated amortization		(69,304	)		(69,397	)
		39,957			42,198
Indefinite-lived intangible assets:
Licenses		17,854			17,796
	$	57,811		$	59,994

Estimated Amortization Expense For Finite-Lived Intangible Assets

Year	(in thousands)
Remainder of 2012	$	8,588
2013	$	10,740
2014	$	6,584
2015	$	3,531
2016	$	2,557
2017	$	1,116