Segment Information - Segment Revenue, Operating Income and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Revenue	$ 26,883	$ 24,344	$ 72,321	$ 69,261
Operating income	1,164	1,017	742	2,594
Depreciation and amortization	1,790	1,887	5,390	5,462
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	26,883	24,344	72,321	69,261
Operating income	3,786	3,228	7,971	8,932
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Revenue	20,514	18,945	54,222	53,504
Operating income	532	753	(1,344)	1,087
Depreciation and amortization	1,424	1,481	4,318	4,315
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenue	6,369	5,399	18,099	15,757
Operating income	3,254	2,475	9,315	7,845
Depreciation and amortization	112	120	331	353
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income	(2,622)	(2,211)	(7,229)	(6,338)
Depreciation and amortization	$ 254	$ 286	$ 741	$ 794