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Stockholders' Equity - Summary of Activity for Unvested RSUs and PSUs (Detail) - $ / shares
 6 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Summary of activity in unvested restricted stock units and performance share units    
Restricted Stock Units, Vested (43,200)  
RSUs and PSUs    
Summary of activity in unvested restricted stock units and performance share units    
Restricted Stock Units, RSUs and PSUs outstanding, beginning of period 932,705 827,930
Restricted Stock Units, Awarded [1] 533,940 423,754
Restricted Stock Units, Vested (276,977) (281,135)
Restricted Stock Units, Forfeited (171,387) (3,996)
Restricted Stock Units, RSUs and PSUs outstanding, end of period 1,018,281 966,553
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value    
Weighted Average Grant Date Fair Value, RSUs and PSUs outstanding, beginning of period $ 13.14 $ 13.3
Weighted Average Grant Date Fair Value, Awarded [1] 12.07 13.53
Weighted Average Grant Date Fair Value, Vested 11.43 13.88
Weighted Average Grant Date Fair Value, Forfeited 10.69 15.23
Weighted Average Grant Date Fair Value, RSUs and PSUs outstanding, end of period $ 13.47 $ 13.23
[1] Includes 43,200 PSUs vested during the six months ended October 31, 2023, in connection with achieving maximum performance targets for the 2019.