Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Products	$ 64,109	$ 75,864
Revenue, Product and Service [Extensible List]	Product	Product
Rental equipment	$ 25,144	$ 19,000
Total revenue	89,253	94,864
Cost of revenue:
Products	$ 51,649	$ 58,884
Revenue, Product and Service [Extensible List]	Product	Product
Rental equipment	$ 19,561	$ 19,686
Total cost of revenue	71,210	78,570
Gross profit	18,043	16,294
Operating expenses:
Selling, general and administrative	23,482	21,926
Research and development	18,104	14,839
Goodwill impairment	4,336
Change in estimated fair value of contingent consideration	(5,035)	(3,524)
Bad debt expense (recovery)	292	(76)
Total operating expenses	41,179	33,165
Loss from operations	(23,136)	(16,871)
Other income (expense):
Interest expense	(65)
Interest income	976	1,441
Gain (loss) on investments, net	(22)	1,993
Foreign exchange losses, net	(397)	(41)
Other, net	(39)
Total other income, net	453	3,393
Loss before income taxes	(22,683)	(13,478)
Income tax expense	173	578
Net loss	$ (22,856)	$ (14,056)
Loss per common share:
Basic	$ (1.76)	$ (1.05)
Diluted	$ (1.76)	$ (1.05)
Weighted average common shares outstanding:
Basic	12,987,996	13,358,930
Diluted	12,987,996	13,358,930