Accrued Expenses and Other Current Liabilities (Income and other taxes) (Details) (USD $)	3 Months Ended			6 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Payables and Accruals [Abstract]
Income tax benefit (expense)	$ 396,000		$ (433,000)	$ 2,308,000	$ 647,000
Discontinued operations, tax effect	(2,100,000)		400,000	28,100,000	600,000
Discontinued operation, deferred income tax expense benefit		$ 24,100,000