Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2012

Goodwill and Intangibles, Net [Abstract]

Summary of changes in the Partnership's goodwill

Balance as of September 30, 2010	$	199,052
Fiscal year 2011 acquisitions		244
Balance as of September 30, 2011		199,296
Fiscal year 2012 acquisitions (see Note 11. Business Combinations)		1,807
Balance as of September 30, 2012	$	201,103

Intangible assets subject to amortization

	September 30,
	2012						2011
	Gross Carrying Amount		Accum. Amortization		Net		Gross Carrying Amount		Accum. Amortization		Net
Customer lists and other intangibles	$	286,783	$	212,071	$	74,712	$	256,172	$	203,824	$	52,348

Estimated annual amortization expense related to intangible assets subject to amortization

	Amount
2013	$	9,111
2014	$	9,035
2015	$	8,900
2016	$	8,729
2017	$	8,209