CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (371)	$ 14,440
Other comprehensive income (loss):
Unrealized actuarial (loss) gain on minimum pension liability, net of tax effect	(1,003)	470
Foreign currency translation loss adjustments	(765)	(1,132)
Other comprehensive loss	(1,768)	(662)
Total comprehensive (loss) income	$ (2,139)	$ 13,778