Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 7,421	$ 958	$ 10,196	$ (1,737)
Foreign currency translation adjustments	(6,916)	1,720	(4,529)	(2,368)
Comprehensive income (loss)	$ 505	$ 2,678	$ 5,667	$ (4,105)