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Leases - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Apr. 30, 2023
Leases [Abstract]          
Right of use assets $ 8,393   $ 8,393   $ 9,170
Operating cash paid to settle lease liabilities     $ 1,282 $ 1,026  
Remaining lease term (in years)     8 years    
Option to extend, term (in years)     5 years    
Option to terminate, term (in years)     1 year    
Operating lease, expense 847 $ 900 $ 1,714 1,734  
Operating lease, short term, expense $ 204 $ 398 $ 432 $ 708  
Weighted average remaining lease term, operating lease (in years) 4 years 7 months 6 days   4 years 7 months 6 days    
Weighted average discount rate, operating lease 5.10%   5.10%    
Weighted average remaining lease term, finance lease (in years) 5 years   5 years    
Weighted average discount rate, finance lease 8.50%   8.50%    
Lease not yet commenced     $ 681    
Operating lease, lease not yet commenced, term (in years) 3 years   3 years