Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (14,209)	$ (11,335)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax $0 and $0, respectively	1,016	108
Retirement plan liability adjustment, net of tax $0 and $0, respectively	2,549	(940)
Interest rate swap agreement adjustment, net of tax $0 and $0, respectively	34	(30)
Comprehensive loss	$ (10,610)	$ (12,197)