Goodwill and Intangible Assets (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Goodwill and Intangible Assets
Aggregate amortization expense of definite lived intangible assets	$ 11,603	$ 11,101
Estimated amortization expense
2014	46,000
2015	46,000
2016	46,000
2017	46,000
2018	$ 46,000