Income and other Taxes (Income Tax Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Federal Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current									$ 0	$ 0	$ 0
Deferred									(1,835)	(21,285)	(2,752)
Federal income tax expense (benefit)									(1,835)	(21,285)	(2,752)
State and Local Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current									0	0	0
Deferred									(356)	(2,454)	(317)
State and local income tax expense (benefit)									(356)	(2,454)	(317)
Foreign Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current									0	0	0
Deferred									0	(811)	(324)
Foreign income tax expense (benefit)									0	(811)	(324)
Total income tax (benefit) expense	$ (339)	$ 456	$ (396)	$ (1,912)	$ (23,171)	$ (732)	$ 433	$ (1,080)	$ (2,191)	$ (24,550)	$ (3,393)