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Operating Leases - Other Supplemental Information for Operating Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2021
Leases [Abstract]      
Weighted-average remaining contractual lease term (years) 8 years 9 years 9 years
Weighted-average discount rate 5.95% 5.84% 5.89%
Cash paid for amounts included in the measurement of lease liabilities:      
Operating cash flows from operating leases $ 26,919 $ 29,737 $ 32,344