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Leases - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 31, 2024
Oct. 31, 2023
Oct. 31, 2024
Oct. 31, 2023
Apr. 30, 2024
Leases [Abstract]          
Right of use assets $ 6,941   $ 6,941   $ 7,454
Operating cash paid to settle lease liabilities     $ 1,334 $ 1,282  
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 878 $ 847 $ 1,760 1,714  
Operating lease, short term, expense $ 202 $ 204 $ 426 $ 432  
Weighted average remaining lease term, operating lease (in years) 3 years 10 months 24 days   3 years 10 months 24 days    
Weighted average discount rate, operating lease 5.40%   5.40%    
Weighted average remaining lease term, finance lease (in years) 4 years 6 months   4 years 6 months    
Weighted average discount rate, finance lease 8.70%   8.70%