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Revenue - Summary of Revenues Disaggregated by Product Classification and Reportable Segment (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | $ 105,136 | $ 94,864 | $ 100,077
Product Sales [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 46,478 | 44,317 | 40,219
Royalties [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 47,056 | 40,634 | 48,458
Research, Development and Other [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 11,602 | 9,913 | 11,400
Operating Segments [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 105,136 | 94,864 | 100,077
Operating Segments [Member] | Medical Device [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 78,253 | 71,401 | 78,353
Operating Segments [Member] | Medical Device [Member] | Product Sales [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 21,777 | 21,608 | 18,617
Operating Segments [Member] | Medical Device [Member] | Royalties [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 30,781 | 28,614 | 34,781
Operating Segments [Member] | Medical Device [Member] | License Fees [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 16,275 | 12,020 | 13,678
Operating Segments [Member] | Medical Device [Member] | Research, Development and Other [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 9,420 | 9,159 | 11,277
Operating Segments [Member] | In Vitro Diagnostics [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 26,883 | 23,463 | 21,724
Operating Segments [Member] | In Vitro Diagnostics [Member] | Product Sales [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | 24,701 | 22,709 | 21,390
Operating Segments [Member] | In Vitro Diagnostics [Member] | Other [Member] |  |  |
Disaggregation Of Revenue [Line Items] |  |  |
Total revenue | $ 2,182 | $ 754 | $ 334

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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