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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Mar. 31, 2023
Cash and Cash Equivalents [Line Items] |  |  |  |  |
Cash and cash equivalents | $ 269,928 |  | $ 269,928 |  | $ 376,532
Expected dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
Money Market Funds | Fair Value, Inputs, Level 1 |  |  |  |  |
Cash and Cash Equivalents [Line Items] |  |  |  |  |
Cash and cash equivalents | $ 254,100 |  | $ 254,100 |  | $ 346,200

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