Reportable Segment Information - Segment Revenue, Operating Income (Loss) and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 105,136	$ 94,864	$ 100,077
Operating (loss) income	6,703	(1,251)	6,469
Depreciation and amortization	8,017	7,263	7,312
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	105,136	94,864	100,077
Operating (loss) income	18,453	8,525	15,414
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Revenue	78,253	71,401	78,353
Operating (loss) income	4,683	(3,246)	4,794
Depreciation and amortization	7,224	6,223	5,811
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenue	26,883	23,463	21,724
Operating (loss) income	13,770	11,771	10,620
Depreciation and amortization	395	483	464
Corporate [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(11,750)	(9,776)	(8,945)
Depreciation and amortization	$ 398	$ 557	$ 1,037