Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Revenue:
Products	$ 45,847	$ 53,306
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Rental equipment	$ 49,962	$ 22,442
Total revenue	95,809	75,748
Cost of revenue:
Products	$ 46,059	$ 51,913
Revenue, Product and Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Rental equipment	$ 18,322	$ 12,863
Total cost of revenue	64,381	64,776
Gross profit	31,428	10,972
Operating expenses:
Selling, general and administrative	23,626	19,874
Research and development	15,495	10,832
Change in estimated fair value of contingent consideration	(2,115)
Bad debt expense	436	1,009
Total operating expenses	37,442	31,715
Gain on disposal of property	7,047
Income (loss) from operations	1,033	(20,743)
Other income (expense):
Interest expense	(99)	(336)
Interest income	1,308	1,083
Foreign exchange gains	241	324
Other, net	(212)	(120)
Total other income, net	1,238	951
Income (loss) before income taxes	2,271	(19,792)
Income tax expense (benefit)	2,417	(580)
Net loss	$ (146)	$ (19,212)
Loss per common share:
Basic	$ (0.01)	$ (1.45)
Diluted	$ (0.01)	$ (1.45)
Weighted average common shares outstanding:
Basic	13,388,626	13,250,867
Diluted	13,388,626	13,250,867