Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 958	$ (3,330)	$ (1,737)	$ (8,992)
Foreign currency translation adjustments	1,720	(1,275)	(2,368)	(1,589)
Comprehensive income (loss)	$ 2,678	$ (4,605)	$ (4,105)	$ (10,581)