Income Taxes (Income Tax Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Current:
Federal	$ 240	$ (309)	$ 1,418
State	308	(58)	263
Foreign	2,278	2,196	3,148
Deferred:
U.S.	(566)	(2,623)	(2,270)
Foreign	(203)	(160)	(126)
Income tax provision (benefit)	$ 2,057	$ (954)	$ 2,433