CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Products	$ 10,459	$ 13,274
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Rental	$ 7,416	$ 1,370
Total revenue	17,875	14,644
Cost of revenue:
Products	$ 11,220	$ 13,096
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Rental	$ 3,565	$ 2,516
Total cost of revenue	14,785	15,612
Gross profit (loss)	3,090	(968)
Operating expenses:
Selling, general and administrative	6,085	5,129
Research and development	3,171	3,158
Bad debt expense (recovery)	(103)	350
Total operating expenses	9,153	8,637
Loss from operations	(6,063)	(9,605)
Other income (expense):
Interest expense	(34)	(64)
Interest income	272	263
Foreign exchange gains (losses), net	67	(43)
Other, net	(88)	(25)
Total other income, net	217	131
Loss before income taxes	(5,846)	(9,474)
Income tax expense	7	6
Net loss	$ (5,853)	$ (9,480)
Loss per common share:
Basic	$ (0.44)	$ (0.72)
Diluted	$ (0.44)	$ (0.72)
Weighted average common shares outstanding:
Basic	13,339,408	13,202,384
Diluted	13,339,408	13,202,384