Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax (benefit) provision	$ (694)	$ 532	$ 219	$ 2,068
Income tax benefit specific to the period			800	$ 1,200
Unrecognized tax benefits that would impact effective tax rate	900		900
Decrease in unrecognized tax benefits that is reasonably possible	$ 200		$ 200