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Revenue - Summary of Revenues Disaggregated by Product Classification and Operating Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | $ 26,883 | $ 24,344 | $ 72,321 | $ 69,261
Product Sales [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 11,987 | 9,870 | 33,731 | 29,508
Royalties [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 12,398 | 11,624 | 30,767 | 31,652
Research, Development and Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 2,498 | 2,850 | 7,823 | 8,101
Operating Segments [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 26,883 | 24,344 | 72,321 | 69,261
Operating Segments [Member] | Medical Device [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 20,514 | 18,945 | 54,222 | 53,504
Operating Segments [Member] | Medical Device [Member] | Product Sales [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 5,763 | 4,500 | 16,240 | 13,836
Operating Segments [Member] | Medical Device [Member] | Royalties [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 4,752 | 9,605 | 20,365 | 25,603
Operating Segments [Member] | Medical Device [Member] | Research, Development and Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 2,353 | 2,821 | 7,215 | 8,016
Operating Segments [Member] | Medical Device [Member] | License Fees [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 7,646 | 2,019 | 10,402 | 6,049
Operating Segments [Member] | In Vitro Diagnostics [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 6,369 | 5,399 | 18,099 | 15,757
Operating Segments [Member] | In Vitro Diagnostics [Member] | Product Sales [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | 6,224 | 5,370 | 17,491 | 15,672
Operating Segments [Member] | In Vitro Diagnostics [Member] | Other [Member] |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Total revenue | $ 145 | $ 29 | $ 608 | $ 85

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