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Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at April 1 $ 1,424 $ 1,372 $ 787
Additions for tax positions of prior years 600 52 585
Reductions for tax positions of prior years 0 0 0
Balance at March 31 $ 2,024 $ 1,424 $ 1,372