Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Revenue	$ 44,582	$ 33,473	$ 131,040	$ 125,056
Cost of revenue	35,189	29,429	104,646	102,231
Gross profit	9,393	4,044	26,394	22,825
Operating expense (income):
Selling, general, and administrative	7,843	7,039	22,726	20,714
Research and development	4,681	4,674	14,288	14,176
Flood-related insurance proceeds	0	0	0	(19,000)
Gain on sale of assets	0	0	0	(413)
Total operating expense	12,524	11,713	37,014	15,477
Operating (loss) income	(3,131)	(7,669)	(10,620)	7,348
Other income (expense):
Interest expense, net	(134)	(185)	(377)	(609)
Foreign exchange gain	5	181	15	261
Gain on sale of investment	0	0	307	0
Change in fair value of financial instruments	110	373	39	343
Other expense	0	17	0	17
Total other (expense) income	(19)	386	(16)	12
(Loss) income before income tax expense	(3,150)	(7,283)	(10,636)	7,360
Income tax expense	0	0	0	(120)
Net (loss) income	(3,150)	(7,283)	(10,636)	7,240
Foreign exchange translation adjustment	0	137	2	130
Comprehensive (loss) income	$ (3,150)	$ (7,146)	$ (10,634)	$ 7,370
Per share data:
Net (loss) income per basic share (in dollars per share)	$ (0.10)	$ (0.27)	$ (0.35)	$ 0.27
Net (loss) income per diluted share (in dollars per share)	$ (0.10)	$ (0.27)	$ (0.35)	$ 0.27
Weighted-average number of basic shares outstanding	30,656	26,609	30,327	26,320
Weighted-average number of diluted shares outstanding	30,656	26,609	30,327	26,620