CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue:
Products	$ 9,083,000	$ 10,459,000
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Rental	$ 16,615,000	$ 7,416,000
Total revenue	25,698,000	17,875,000
Cost of revenue:
Products	$ 9,903,000	$ 11,220,000
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Rental	$ 5,305,000	$ 3,565,000
Total cost of revenue	15,208,000	14,785,000
Gross profit	10,490,000	3,090,000
Operating expenses:
Selling, general and administrative	5,997,000	6,085,000
Research and development	4,296,000	3,171,000
Bad debt expense (recovery)	27,000	(103,000)
Total operating expenses	10,320,000	9,153,000
Income (loss) from operations	170,000	(6,063,000)
Other income (expense):
Interest expense	(12,000)	(34,000)
Interest income	134,000	272,000
Foreign exchange gains (losses), net	(132,000)	67,000
Other, net	(29,000)	(88,000)
Total other income (loss), net	(39,000)	217,000
Income (loss) before income taxes	131,000	(5,846,000)
Income tax expense	1,420,000	7,000
Net loss	$ (1,289,000)	$ (5,853,000)
Loss per common share:
Basic	$ (0.10)	$ (0.44)
Diluted	$ (0.10)	$ (0.44)
Weighted average common shares outstanding:
Basic	13,454,254	13,339,408
Diluted	13,454,254	13,339,408