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Leases, Commitments and Contingencies - Additional Information (Detail) - USD ($)
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Commitments and Contingencies Disclosure [Abstract]    
ROU assets $ 10,791,000 $ 12,965,000
Operating lease payments $ 4,452,000 3,394,000
Remaining lease term (in years) 6 years  
Option to extend, term (in years) 5 years  
Option to terminate, term (in years) 1 year  
Operating lease expense $ 6,194,000 4,433,000
Operating lease, short term, expense $ 1,742,000 $ 1,039,000
Operating lease, weighted average remaining lease term (in years) 3 years 2 months 12 days 4 years 1 month 6 days
Operating lease, weighted average discount rate (as a percent) 6.20% 6.20%
Finance lease, weighted average remaining lease term (in years) 4 years 4 months 24 days 4 years 2 months 12 days
Finance lease, weighted average discount rate (as a percent) 7.60% 8.60%