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Leases, Commitments and Contingencies - Additional Information (Detail) - USD ($)
 12 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Commitments and Contingencies Disclosure [Abstract]    
ROU assets $ 12,965,000 $ 7,454,000
Operating lease payments $ 3,394,000 2,594,000
Remaining lease term (in years) 7 years  
Option to extend, term (in years) 5 years  
Option to terminate, term (in years) 1 year  
Operating lease expense $ 4,433,000 3,458,000
Operating lease, short term, expense $ 1,039,000 $ 864,000
Operating lease, weighted average remaining lease term (in years) 4 years 1 month 6 days 4 years 2 months 12 days
Operating lease, weighted average discount rate (as a percent) 6.20% 5.10%
Finance lease, weighted average remaining lease term (in years) 4 years 2 months 12 days 4 years 6 months
Finance lease, weighted average discount rate (as a percent) 8.60% 8.30%
Lease not yet commenced amount $ 267,000  
Term of contract 5 years