Accrued Expenses and Other Current Liabilities (Income and Other Taxes) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2016	Mar. 31, 2015
Payables and Accruals [Abstract]
Income tax expense	$ 155	$ 396		$ 153	$ 2,308
Income tax expense, discontinued operations	$ (200)		$ 2,100	$ (200)	$ 28,100