CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue:
Products	$ 17,679	$ 6,975	$ 66,005	$ 25,575
Revenue, Product and Service [Extensible List]	Product	Product	Product	Product
Rental	$ 5,404	$ 15,728	$ 9,430	$ 40,740
Total revenue	23,083	22,703	75,435	66,315
Cost of revenue:
Products	$ 12,907	$ 8,660	$ 47,492	$ 28,285
Revenue, Product and Service [Extensible List]	Product	Product	Product	Product
Rental	$ 4,549	$ 5,979	$ 14,744	$ 19,564
Total cost of revenue	17,456	14,639	62,236	47,849
Gross profit	5,627	8,064	13,199	18,466
Operating expenses:
Selling, general and administrative	5,243	5,704	16,075	17,767
Research and development	3,658	4,014	10,943	12,535
Change in estimated fair value of contingent consideration	(795)	662	(1,713)	1,634
Bad debt expense (recovery)	(40)	248	(32)	406
Total operating expenses	8,066	10,628	25,273	32,342
Loss from operations	(2,439)	(2,564)	(12,074)	(13,876)
Other income (expense):
Interest expense		(8)		(31)
Interest income	151	574	1,284	924
Gain on investments, net	1,727		1,996
Foreign exchange gains (losses), net	(49)	307	64	283
Other, net	(8)	(21)	(3)	(78)
Total other income, net	1,821	852	3,341	1,098
Loss before income taxes	(618)	(1,712)	(8,733)	(12,778)
Income tax expense	169	573	288	2,600
Net loss	$ (787)	$ (2,285)	$ (9,021)	$ (15,378)
Loss per common share:
Basic	$ (0.06)	$ (0.17)	$ (0.67)	$ (1.14)
Diluted	$ (0.06)	$ (0.17)	$ (0.67)	$ (1.14)
Weighted average common shares outstanding:
Basic	13,353,254	13,545,340	13,464,177	13,517,387
Diluted	13,353,254	13,545,340	13,464,177	13,517,387