CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Revenue:
Products	$ 21,604	$ 9,517	$ 48,326	$ 18,600
Revenue, Product and Service [Extensible List]	Product	Product	Product	Product
Rental	$ 2,288	$ 16,390	$ 4,026	$ 25,012
Total revenue	23,892	25,907	52,352	43,612
Cost of revenue:
Products	$ 17,755	$ 9,722	$ 34,585	$ 19,625
Revenue, Product and Service [Extensible List]	Product	Product	Product	Product
Rental	$ 5,290	$ 8,280	$ 10,195	$ 13,585
Total cost of revenue	23,045	18,002	44,780	33,210
Gross profit	847	7,905	7,572	10,402
Operating expenses:
Selling, general and administrative	5,478	6,066	10,832	12,063
Research and development	3,765	4,225	7,285	8,521
Change in estimated fair value of contingent consideration	(221)	972	(918)	972
Bad debt expense	1	131	8	158
Total operating expenses	9,023	11,394	17,207	21,714
Loss from operations	(8,176)	(3,489)	(9,635)	(11,312)
Other income (expense):
Interest expense		(11)		(23)
Interest income	812	216	1,133	350
Foreign exchange gains (losses), net	(36)	108	113	(24)
Other, net	277	(28)	274	(57)
Total other income, net	1,053	285	1,520	246
Loss before income taxes	(7,123)	(3,204)	(8,115)	(11,066)
Income tax expense	61	607	119	2,027
Net loss	$ (7,184)	$ (3,811)	$ (8,234)	$ (13,093)
Loss per common share:
Basic	$ (0.53)	$ (0.28)	$ (0.61)	$ (0.97)
Diluted	$ (0.53)	$ (0.28)	$ (0.61)	$ (0.97)
Weighted average common shares outstanding:
Basic	13,466,614	13,541,404	13,519,638	13,503,486
Diluted	13,466,614	13,541,404	13,519,638	13,503,486