Segment Information - Segment Revenue, Operating Income (Loss) and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 22,297	$ 22,616
Operating income (loss)	93	(266)
Depreciation and amortization	1,860	1,804
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	22,297	22,616
Operating income (loss)	2,627	2,176
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Revenue	16,196	17,404
Operating income (loss)	(593)	(423)
Depreciation and amortization	1,652	1,455
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenue	6,101	5,212
Operating income (loss)	3,220	2,599
Depreciation and amortization	105	110
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(2,534)	(2,442)
Depreciation and amortization	$ 103	$ 239