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Investments - Additional Information (Detail) - USD ($) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 | Jan. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2021
Schedule Of Investments [Line Items] |  |  |  |
Short-term investments | $ 95,203,000 |  | $ 79,932,000 |
Long-term investments | 70,542,000 |  | 56,619,000 |
Interest on investments | 400,000 |  |  |
Amortization on investments | 300,000 |  |  |
Allowance for credit losses | 0 |  |  |
Unrealized holding loss | 1,100,000 |  |  |
Prepaid Expenses and Other Current Assets |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |
Investment securities | 500,000 |  | 300,000 |
Convertible Promissory Note | Thirona Bio, Inc. |  |  |  |
Schedule Of Investments [Line Items] |  |  |  |
Investment securities | $ 6,900,000 | $ 5,000.0 | $ 3,000,000.0 | $ 3,000.0

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