Revenue - Summary of Revenues Disaggregated by Product Classification and Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 26,106	$ 34,995	$ 49,109	$ 57,292
Product Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	13,964	11,783	26,308	21,885
Royalties [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	9,844	20,052	17,943	29,386
Research, Development and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,298	3,160	4,858	6,021
Operating Segments [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	26,106	34,995	49,109	57,292
Operating Segments [Member] | Medical Device [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	18,453	27,907	35,361	44,103
Operating Segments [Member] | Medical Device [Member] | Product Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	6,441	5,410	13,229	9,971
Operating Segments [Member] | Medical Device [Member] | Royalties [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	8,358	7,474	15,244	15,383
Operating Segments [Member] | Medical Device [Member] | License Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,486	12,578	2,699	14,003
Operating Segments [Member] | Medical Device [Member] | Research, Development and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,168	2,445	4,189	4,746
Operating Segments [Member] | In Vitro Diagnostics [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	7,653	7,088	13,748	13,189
Operating Segments [Member] | In Vitro Diagnostics [Member] | Product Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	7,523	6,373	13,079	11,914
Operating Segments [Member] | In Vitro Diagnostics [Member] | Research, Development and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 130	$ 715	$ 669	$ 1,275