Goodwill and Intangible Assets (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Goodwill and Intangible Assets
Aggregate amortization expense of definite lived intangible assets	$ 11,449	$ 10,977	$ 34,123	$ 32,986
Estimated amortization expense
2014	46,000		46,000
2015	46,000		46,000
2016	46,000		46,000
2017	46,000		46,000
2018	$ 46,000		$ 46,000