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Organization and Significant Accounting Policies - Contract Estimates (Details)
3 Months Ended 6 Months Ended
Oct. 26, 2024
USD ($)
contract
Oct. 28, 2023
USD ($)
contract
Oct. 26, 2024
USD ($)
contract
Oct. 28, 2023
USD ($)
contract
Apr. 30, 2024
USD ($)
Material adjustment to any one contract $ 0 $ 0 $ 0 $ 0  
Amount of aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods increased   $ 2,817,000   $ 3,544,000  
Amount of revised aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods $ 6,973,000   $ 8,555,000    
Number of active contracts | contract 1 1 1 1  
Forward Loss Reserve $ 130,000   $ 130,000   $ 374,000
LMS          
Amount of aggregate impact of adjustments in contract estimates on revenue related to performance obligations satisfied or partially satisfied in previous periods increased   $ 1,716,000 $ 9,870,000 $ 1,439,000