Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (1,932)	$ (2,372)
Foreign currency translation adjustment	1,081	(576)
Reclassification adjustment for net foreign currency translation losses included in net income	1,592
Comprehensive income (loss)	$ 741	$ (2,948)