Segment Information - Segment Revenue, Operating Income (Loss) and Depreciation and Amortization (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenue	$ 34,995	$ 22,822	$ 57,292	$ 45,438
Operating income (loss)	9,483	(156)	9,576	(422)
Depreciation and amortization	1,906	1,796	3,766	3,600
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	34,995	22,822	57,292	45,438
Operating income (loss)	12,373	2,009	15,000	4,185
Operating Segments [Member] | Medical Device [Member]
Segment Reporting Information [Line Items]
Revenue	27,907	16,304	44,103	33,708
Operating income (loss)	8,564	(1,453)	7,971	(1,876)
Depreciation and amortization	1,721	1,439	3,373	2,894
Operating Segments [Member] | In Vitro Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenue	7,088	6,518	13,189	11,730
Operating income (loss)	3,809	3,462	7,029	6,061
Depreciation and amortization	88	109	193	219
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(2,890)	(2,165)	(5,424)	(4,607)
Depreciation and amortization	$ 97	$ 248	$ 200	$ 487