Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Total revenue	$ 62,060	$ 84,867	$ 236,912
Cost of revenue:
Total cost of revenue	81,423	96,067	140,453
Gross profit (loss)	(19,363)	(11,200)	96,459
Operating expenses:
Selling, general and administrative expenses	21,533	22,671	25,291
Research and development expenses	13,851	14,694	16,536
Goodwill impairment expense		1,843
Bad debt expense	763	2,147	833
Total operating expenses	36,147	41,355	42,660
Income (loss) from operations	(55,510)	(52,555)	53,799
Other income (expense):
Interest expense	(26)	(229)	(471)
Interest income	376	427	123
Foreign exchange gains (losses)	(113)	2,622	182
Other, net	(60)	(99)	(90)
Total other income (expense), net	177	2,721	(256)
Income (loss) before income taxes	(55,333)	(49,834)	53,543
Income tax expense (benefit)	(9,363)	(17,193)	16,632
Net income (loss)	$ (45,970)	$ (32,641)	$ 36,911
Earnings (loss) per common share:
Basic	$ (3.52)	$ (2.51)	$ 2.82
Diluted	$ (3.52)	$ (2.51)	$ 2.81
Weighted average common shares outstanding:
Basic	13,044,875	12,996,958	12,950,958
Diluted	13,044,875	12,996,958	12,997,009
Products
Revenue:
Total revenue	$ 46,530	$ 73,691	$ 209,581
Cost of revenue:
Total cost of revenue	63,608	79,998	125,497
Rental equipment
Revenue:
Total revenue	15,530	11,176	27,331
Cost of revenue:
Total cost of revenue	$ 17,815	$ 16,069	$ 14,956