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Debt - Long-term debt (Details) - USD ($)
 9 Months Ended 12 Months Ended
Jan. 25, 2025
Apr. 30, 2024
Feb. 04, 2022
Long-term debt      
Total debt $ 25,000,000 $ 28,000,000  
Less current portion   10,000,000  
Total long-term debt, less current portion 25,000,000 18,000,000  
Less unamortized debt issuance costs - term loans   908,000  
Total long-term debt, net of unamortized debt issuance costs - term loans 25,000,000 17,092,000  
Unamortized debt issuance costs - revolving credit facility $ 1,354,000 $ 511,000  
Current period interest rate 5.90% 6.90%  
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 $ 25,000,000