Leases (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Rental expense	$ 5,900,000	$ 11,000,000	$ 10,300,000
2013	5,341,000
2014	2,421,000
2015	1,856,000
2016	709,000
2017	87,000
Thereafter	0
Total	$ 10,414,000