CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue:
Products	$ 6,975	$ 12,153	$ 25,575	$ 34,457
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Rental	$ 15,728	$ 10,720	$ 40,740	$ 32,414
Total revenue	22,703	22,873	66,315	66,871
Cost of revenue:
Products	$ 8,660	$ 10,508	$ 28,285	$ 32,967
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Rental	$ 5,979	$ 4,775	$ 19,564	$ 12,873
Total cost of revenue	14,639	15,283	47,849	45,840
Gross profit	8,064	7,590	18,466	21,031
Operating expenses:
Selling, general and administrative	5,704	6,050	17,767	17,493
Research and development	4,014	4,246	12,535	11,315
Change in estimated fair value of contingent consideration	662		1,634
Bad debt expense	248	629	406	599
Total operating expenses	10,628	10,925	32,342	29,407
Loss from operations	(2,564)	(3,335)	(13,876)	(8,376)
Other income (expense):
Interest expense	(8)	(28)	(31)	(85)
Interest income	574	446	924	898
Foreign exchange gains (losses), net	307	(1)	283	185
Other, net	(21)	(54)	(78)	(183)
Total other income, net	852	363	1,098	815
Loss before income taxes	(1,712)	(2,972)	(12,778)	(7,561)
Income tax expense	573	700	2,600	1,257
Net loss	$ (2,285)	$ (3,672)	$ (15,378)	$ (8,818)
Loss per common share:
Basic	$ (0.17)	$ (0.27)	$ (1.14)	$ (0.66)
Diluted	$ (0.17)	$ (0.27)	$ (1.14)	$ (0.66)
Weighted average common shares outstanding:
Basic	13,545,340	13,405,504	13,517,387	13,381,789
Diluted	13,545,340	13,405,504	13,517,387	13,381,789