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Investments - Schedule of Equity Investments with and without Readily Determinable Fair Values Assessed (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Equity Securities Without Readily Determinable Fair Value [Line Items] |  |
Equity investment without readily determinable fair values assessed under the measurement alternative: | $ 4,387 | $ 5,588
Reneo | Common Stock |  |
Equity Securities Without Readily Determinable Fair Value [Line Items] |  |
Equity investment with readily determinable fair value: | 4,387 | 1,343
Anteris Bio Inc | Preferred Stock |  |
Equity Securities Without Readily Determinable Fair Value [Line Items] |  |
Equity investment without readily determinable fair values assessed under the measurement alternative: | $ 0 | $ 4,245

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