CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue:
Revenue	$ 13,032	$ 26,722
Revenue, Product and Service [Extensible List]	Product	Product
Rental	$ 4,959	$ 1,738
Total revenue	17,991	28,460
Cost of revenue:
Products	$ 11,350	$ 16,830
Revenue, Product and Service [Extensible List]	Product	Product
Rental	$ 4,939	$ 4,905
Total cost of revenue	16,289	21,735
Gross profit	1,702	6,725
Operating expenses:
Selling, general and administrative	5,744	5,354
Research and development	5,269	3,520
Change in estimated fair value of contingent consideration	(2,440)	(697)
Bad debt expense	15	7
Total operating expenses	8,588	8,184
Loss from operations	(6,886)	(1,459)
Other income (expense):
Interest income	194	321
Foreign exchange gains, net	18	149
Other, net	(17)	(3)
Total other income, net	195	467
Loss before income taxes	(6,691)	(992)
Income tax expense	77	58
Net loss	$ (6,768)	$ (1,050)
Loss per common share:
Basic	$ (0.52)	$ (0.08)
Diluted	$ (0.52)	$ (0.08)
Weighted average common shares outstanding:
Basic	12,919,673	13,571,510
Diluted	12,919,673	13,571,510