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Debt - Long-term debt (Details) - USD ($)
12 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Oct. 04, 2024
Long-term debt      
Total debt $ 30,000,000 $ 28,000,000  
Less current portion   10,000,000  
Total long-term debt, less current portion 30,000,000 18,000,000  
Less unamortized debt issuance costs - term loans   908,000  
Total long-term debt, net of unamortized debt issuance costs - term loans 30,000,000 17,092,000  
Unamortized debt issuance costs - revolving credit facility 1,281,000 511,000  
Term loan      
Long-term debt      
Total debt   $ 28,000,000  
Unamortized debt issuance costs - revolving credit facility     $ 590,000
Revolving credit facility      
Long-term debt      
Total debt $ 30,000,000    
Current period interest rate 5.90% 6.90%