Revenue - Summary of Revenues Disaggregated by Product Classification and Reportable Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 23,873	$ 26,883	$ 81,165	$ 72,321
Product Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	12,084	11,987	33,969	33,731
Royalties [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	8,796	12,398	38,182	30,767
Research, Development and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,993	2,498	9,014	7,823
Operating Segments [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	23,873	26,883	81,165	72,321
Operating Segments [Member] | Medical Device [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	16,755	20,514	60,858	54,222
Operating Segments [Member] | Medical Device [Member] | Product Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	5,493	5,763	15,464	16,240
Operating Segments [Member] | Medical Device [Member] | Royalties [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	7,752	4,752	23,135	20,365
Operating Segments [Member] | Medical Device [Member] | Research, Development and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	2,466	2,353	7,212	7,215
Operating Segments [Member] | Medical Device [Member] | License Fees [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	1,044	7,646	15,047	10,402
Operating Segments [Member] | In Vitro Diagnostics [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	7,118	6,369	20,307	18,099
Operating Segments [Member] | In Vitro Diagnostics [Member] | Product Sales [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	6,591	6,224	18,505	17,491
Operating Segments [Member] | In Vitro Diagnostics [Member] | Research, Development and Other [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 527	$ 145	$ 1,802	$ 608