Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (2,372)	$ 6,452
Foreign currency translation adjustment	(576)	541
Comprehensive (loss) income	$ (2,948)	$ 6,993