CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Revenue:
Revenue	$ 21,565,000	$ 21,604,000	$ 34,597,000	$ 48,326,000
Revenue, Product and Service [Extensible List]	Product	Product	Product	Product
Rental	$ 3,135,000	$ 2,288,000	$ 8,094,000	$ 4,026,000
Total revenue	24,700,000	23,892,000	42,691,000	52,352,000
Cost of revenue:
Products	$ 13,500,000	$ 17,755,000	$ 24,850,000	$ 34,585,000
Revenue, Product and Service [Extensible List]	Product	Product	Product	Product
Rental	$ 4,390,000	$ 5,290,000	$ 9,329,000	$ 10,195,000
Total cost of revenue	17,890,000	23,045,000	34,179,000	44,780,000
Gross profit	6,810,000	847,000	8,512,000	7,572,000
Operating expenses:
Selling, general and administrative	5,991,000	5,478,000	11,735,000	10,832,000
Research and development	4,673,000	3,765,000	9,942,000	7,285,000
Change in estimated fair value of contingent consideration	(2,218,000)	(221,000)	(4,658,000)	(918,000)
Bad debt expense	13,000	1,000	28,000	8,000
Total operating expenses	8,459,000	9,023,000	17,047,000	17,207,000
Loss from operations	(1,649,000)	(8,176,000)	(8,535,000)	(9,635,000)
Other income (expense):
Interest income	126,000	812,000	320,000	1,133,000
Foreign exchange gains (losses), net	93,000	(36,000)	111,000	113,000
Other, net	(19,000)	277,000	(36,000)	274,000
Total other income, net	200,000	1,053,000	395,000	1,520,000
Loss before income taxes	(1,449,000)	(7,123,000)	(8,140,000)	(8,115,000)
Income tax expense	25,000	61,000	102,000	119,000
Net loss	$ (1,474,000)	$ (7,184,000)	$ (8,242,000)	$ (8,234,000)
Loss per common share:
Basic	$ (0.11)	$ (0.53)	$ (0.64)	$ (0.61)
Diluted	$ (0.11)	$ (0.53)	$ (0.64)	$ (0.61)
Weighted average common shares outstanding:
Basic	12,999,022	13,466,614	12,958,911	13,519,638
Diluted	12,999,022	13,466,614	12,958,911	13,519,638