Segment Information - Segment Revenue, Operating (Loss) Income and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 22,822	$ 22,676	$ 45,438	$ 44,917
Operating (loss) income	(156)	865	(422)	1,577
Depreciation and amortization	1,796	1,819	3,600	3,575
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	22,822	22,676	45,438	44,917
Operating (loss) income	2,009	2,892	4,185	5,704
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Revenue	16,304	17,301	33,708	34,559
Operating (loss) income	(1,453)	(23)	(1,876)	334
Depreciation and amortization	1,439	1,447	2,894	2,835
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenue	6,518	5,375	11,730	10,358
Operating (loss) income	3,462	2,915	6,061	5,370
Depreciation and amortization	109	117	219	233
Corporate [Member]
Segment Reporting Information [Line Items]
Operating (loss) income	(2,165)	(2,027)	(4,607)	(4,127)
Depreciation and amortization	$ 248	$ 255	$ 487	$ 507