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Preferred and Common Stock- Schedule of Restricted Stock and Restricted Stock Units Granted (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 01, 2021
Jun. 15, 2021
May 03, 2021
Sep. 02, 2020
Dec. 23, 2019
Sep. 04, 2019
Jun. 24, 2019
Jun. 04, 2019
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2020
Jun. 04, 2021
Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted                 154,278 209,936 189,035  
Key Employees | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted               75,959,000        
Fair Value at Grant Date               $ 9,886        
Officers | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted     5,053,000         59,579,000        
Fair Value at Grant Date   $ 1,760           $ 9,097        
Compensation not yet recognized                       $ 2,800
Officers | Stock Incentive Plan | Restricted Stock Units, Performance-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Award vesting period                 3 years      
Compensation not yet recognized               6,900 $ 14,000 $ 25,300    
Compensation not yet recognized, fair value               $ 3,400 $ 13,900 $ 14,700    
Non-Employee Board Members | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted 5,275,000     5,240,000   5,504,000            
Fair Value at Grant Date $ 1,081     $ 951   $ 919            
CEO | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted         5,000,000   32,786,000          
Fair Value at Grant Date         $ 788   $ 5,700          
CEO | Stock Incentive Plan | Restricted Stock Units, Time-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Compensation not yet recognized             $ 1,800          
Key Employees and Officers | Stock Incentive Plan | Restricted Stock Units, Performance-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Award vesting period                 3 years      
Compensation not yet recognized                 $ 2,600      
Compensation not yet recognized, fair value                 $ 1,300      
Minimum | Officers | Stock Incentive Plan | Restricted Stock Units, Performance-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 0.00%      
Minimum | Officers | Stock Incentive Plan | Restricted Stock Units, Market-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 0.00%      
Minimum | CEO | Stock Incentive Plan | Restricted Stock Units, Time-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 0.00%      
Minimum | Key Employees and Officers | Stock Incentive Plan | Restricted Stock Units, Performance-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 0.00%      
Maximum | Officers | Stock Incentive Plan | Restricted Stock Units, Performance-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 200.00%      
Maximum | Officers | Stock Incentive Plan | Restricted Stock Units, Market-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 200.00%      
Maximum | CEO | Stock Incentive Plan | Restricted Stock Units, Time-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 200.00%      
Maximum | Key Employees and Officers | Stock Incentive Plan | Restricted Stock Units, Performance-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Target allocation percentage                 200.00%      
Tranche One | Key Employees | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted                 54,525,000 80,050,000    
Fair Value at Grant Date                 $ 11,654 $ 13,417    
Tranche One | Officers | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted                     8,444,000  
Fair Value at Grant Date                     $ 1,368  
Tranche Two | Officers | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted                 88,224,000 94,756,000 1,763,000  
Fair Value at Grant Date                 $ 19,629 $ 17,856 $ 354  
Tranche Two | Officers | Stock Incentive Plan | Restricted Stock Units, Market-Based                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Compensation not yet recognized                 $ 354 $ 177    
Tranche Three | Key Employees and Officers | Stock Incentive Plan | Restricted Stock Units                        
Share-based Compensation Arrangement by Share-based Payment Award                        
Shares Granted                 1,201,000 29,890,000    
Fair Value at Grant Date                 $ 227 $ 5,153