Unaudited Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (594)	$ 428	$ (1,794)	$ 385
Other comprehensive income (loss):
Foreign currency translation gain (loss) adjustments	(86)	(76)	(90)	62
Other comprehensive income (loss)	(86)	(76)	(90)	62
Total comprehensive income (loss)	$ (680)	$ 352	$ (1,884)	$ 447