Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Consolidated Statement of Comprehensive Loss [Abstract]
Net income (loss)	$ (829)	$ 5,567	$ (1,128)	$ 5,108
Foreign currency translation adjustments	886	4,552	(1,725)	2,014
Comprehensive income (loss)	$ 57	$ 10,119	$ (2,853)	$ 7,122