Income Taxes - Income Tax Benefit from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income Tax Provision Accompanying Consolidated Statements of Operation
Loss before income tax benefit	$ (13,333)	$ (6,025)
Less-U.S. state and local income tax benefit	(111)	(13)
Loss before U.S. and non-U.S. federal income tax provision	(13,222)	(6,012)
Income tax benefit at U.S. federal statutory rates	(4,628)	(2,104)
Tax effect of:
Foreign rate differential	254	334
Permanent items	8	438
Undistributed earnings of non-U.S. subsidiaries	0	(992)
Prior year tax adjustments	(56)	(23)
State and local income taxes	(80)	(113)
Impact of tax law changes	(338)	0
Federal tax credits	(572)	(92)
Valuation allowance	3,309	147
Changes in uncertain tax positions	(37)	58
Other	142	(97)
Income tax benefit	$ (1,998)	$ (2,444)