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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