Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2012

Intangible Assets

Schedule of gross carrying amounts and accumulated amortization of intangible assets

		September 30, 2011				June 30, 2012
(in thousands)	Estimated useful lives	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
CCP contracts	8 - 20 years	$	117,690	$	58,643	$	106,400	$	52,049
Customer relationships	5 - 15 years	77,914		38,454		72,464		37,084
Trade names	5 - 20 years	67,890		23,608		67,890		26,231
Patents and patented technologies	2 - 19 years	54,736		36,296		55,087		40,314
Other	2 - 17 years	4,985		1,993		3,760		1,091
		$	323,215	$	158,994	$	305,601	$	156,769

Schedule of total estimated annual amortization expense

Year ending September 30:	(in thousands)
2012	$	20,676
2013	19,746
2014	19,203
2015	15,056
2016	14,800
2017	13,921