Income and other Taxes - Provision for Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended									12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2011	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax (benefit) expense computed at U.S. federal statutory rate										$ (6,537)	$ 1,700	$ (12,800)
State tax expense (benefit), net of U.S. federal effect										2,989	400	(1,400)
Foreign										0	0	1,600
NOL adjustments										24,515	0	0
Capital losses										(5,217)	0	0
Other										(1,033)	1,320	744
Change in valuation allowance										(38,797)	(3,300)	13,500
Income tax (benefit) expense	$ (24,080)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 120	$ 1,600	$ (24,080)	$ 120	$ 1,644
Effective tax rate										125.00%	2.00%	4.00%