Accrued Expenses and Other Current Liabilities (Income and Other Taxes) (Narrative) (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
Payables and Accruals [Abstract]
Income tax benefit	$ 339	$ (456)	$ 396	$ 1,912	$ 23,171	$ 732	$ (433)	$ 1,080	$ 2,191	$ 24,550	$ 3,393
Discontinued operations, tax effect									26,500	500	3,500
Deferred income taxes									24,080	$ (24,080)	$ 0
Deferred income tax expense benefit from discontinued operations									$ 24,100