Income Taxes - Effective Income Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Income tax computed at statutory rate	$ (2,406)	$ (12,479)	$ (61,590)
State income taxes, net of federal benefit	(172)	(684)	(6,055)
Valuation allowance - IRS Settlement	(26,846)	0	0
Valuation allowance - other	3,023	11,729	59,601
Changes for uncertain tax positions	(14,276)	(1,909)	(32,441)
IRS interest refund	(1,714)	0	0
Other, net	594	(146)	138
Total	$ (41,797)	$ (3,489)	$ (40,347)