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Changes in Stockholders' Equity - Summary of Changes in Stockholders' Equity (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Stockholders' Equity Note [Abstract]        
Unrealized gain (loss) on investments, tax $ 0 $ 0 $ 0 $ 0