Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenue	$ 24,001	$ 24,036
Cost of revenue	18,193	16,122
Gross profit	5,808	7,914
Operating expense:
Selling, general, and administrative	7,593	4,819
Research and development	4,019	3,800
Loss on sale of assets	0	107
Total operating expense	11,612	8,726
Operating loss	(5,804)	(812)
Other income:
Interest income, net	267	111
Foreign exchange gain	14	286
Total other income	281	397
Loss before income tax (expense) benefit	(5,523)	(415)
Income tax (expense) benefit	(15)	333
Net loss	(5,538)	(82)
Foreign exchange translation adjustment	14	253
Comprehensive (loss) income	$ (5,524)	$ 171
Per share data:
Net loss per basic share (in usd per share)	$ (0.20)	$ 0.00
Weighted-average number of basic and diluted shares outstanding (in shares)	27,534	27,032