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Investments - Additional Information (Detail) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) Note | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Schedule Of Investments [Line Items] |  |  |
Interest on available for sale investment |  | $ 100,000 |
Accretion or amortization | $ 3,400,000 | 1,200,000 |
Allowance for credit losses | 0 |  | $ 0
Prepaid Expenses and Other Current Assets |  |  |
Schedule Of Investments [Line Items] |  |  |
Accrued interest receivable | 600,000 |  | 500,000
Convertible Promissory Note | Thirona Bio, Inc. |  |  |
Schedule Of Investments [Line Items] |  |  |
Interest on available for sale investment | $ 0 |  |
Number of notes | Note | 2 |  |
Amount Due | $ 8,000,000 |  |
Stated interest rate | 6.00% |  |
Investment securities | $ 6,900,000 |  | $ 6,900,000
Credit risk recognized | 0 | 0 |
Unrealized holding gain or loss | $ 0 | $ 0 |

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