Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Revenue:
Total revenue	$ 84,867	$ 236,912	$ 300,607
Cost of revenue:
Total costs of revenue	96,067	140,453	160,846
Gross profit (loss)	(11,200)	96,459	139,761
Operating expenses:
Selling, general and administrative expenses	22,671	25,291	23,383
Research and development expenses	14,694	16,536	14,694
Goodwill impairment expense	1,843
Bad debt expense	2,147	833	457
Total operating expenses	41,355	42,660	38,534
Income (loss) from operations	(52,555)	53,799	101,227
Other income (expense):
Interest expense	(229)	(471)	(260)
Interest income	427	123	880
Foreign exchange gains (losses)	2,622	182	(708)
Other, net	(99)	(90)	(46)
Total other income (expense), net	2,721	(256)	(134)
Income (loss) before income taxes	(49,834)	53,543	101,093
Income tax expense (benefit)	(17,193)	16,632	31,536
Net income (loss)	$ (32,641)	$ 36,911	$ 69,557
Earnings (loss) per common share:
Basic	$ (2.51)	$ 2.82	$ 5.40
Diluted	$ (2.51)	$ 2.81	$ 5.38
Weighted average common shares outstanding:
Basic	12,996,958	12,950,958	12,886,372
Diluted	12,996,958	12,997,009	12,938,661
Products
Revenue:
Total revenue	$ 73,691	$ 209,581	$ 287,233
Cost of revenue:
Total costs of revenue	79,998	125,497	152,659
Rental equipment
Revenue:
Total revenue	11,176	27,331	13,374
Cost of revenue:
Total costs of revenue	$ 16,069	$ 14,956	$ 8,187