CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Revenue:
Total revenue	$ 19,247	$ 20,558	$ 33,891	$ 35,843
Cost of revenue:
Total cost of revenue	17,248	23,116	32,860	41,728
Gross profit (loss)	1,999	(2,558)	1,031	(5,885)
Operating expenses:
Selling, general and administrative	4,785	5,026	9,914	10,120
Research and development	2,430	3,412	5,588	6,784
Bad debt expense (recovery)	6	64	356	(418)
Total operating expenses	7,221	8,502	15,858	16,486
Loss from operations	(5,222)	(11,060)	(14,827)	(22,371)
Other income (expense):
Interest expense	(127)	(8)	(191)	(16)
Interest income	279	137	542	268
Foreign exchange losses, net	(306)	(215)	(349)	(281)
Other, net	(29)	(16)	(54)	(33)
Total other expense, net	(183)	(102)	(52)	(62)
Loss before income taxes	(5,405)	(11,162)	(14,879)	(22,433)
Income tax expense (benefit)	(676)	341	(670)	775
Net loss	$ (4,729)	$ (11,503)	$ (14,209)	$ (23,208)
Loss per common share:
Basic	$ (0.36)	$ (0.88)	$ (1.07)	$ (1.77)
Diluted	$ (0.36)	$ (0.88)	$ (1.07)	$ (1.77)
Weighted average common shares outstanding:
Basic	13,264,710	13,146,330	13,233,205	13,120,286
Diluted	13,264,710	13,146,330	13,233,205	13,120,286
Products
Revenue:
Total revenue	$ 14,044	$ 14,775	$ 27,469	$ 25,072
Cost of revenue:
Total cost of revenue	14,205	18,799	27,448	33,635
Rental equipment
Revenue:
Total revenue	5,203	5,783	6,422	10,771
Cost of revenue:
Total cost of revenue	$ 3,043	$ 4,317	$ 5,412	$ 8,093