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Collaborative Arrangement - Additional Information (Detail) - Abbott [Member] - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 26, 2018 | Jun. 30, 2018 | Jun. 30, 2018
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |
Upfront fee received | $ 25,000,000 |  | $ 25,000,000
Collaboration revenue recognized |  | $ 1,700,000 | $ 2,200,000
Maximum [Member] |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |
Collaborative arrangement additional potential milestone payments receivable | $ 67,000,000 |  |

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- Definition The amount of compensation earned (contract income) under a research and development arrangement accounted for as a contract to perform research and development for others. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23221-108380 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420387&loc=d3e23199-108380 + Details
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- Details
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