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Shareholders' Equity (Deficit): Stock Options (Details) - shares
12 Months Ended
Apr. 24, 2024
Dec. 28, 2024
Apr. 29, 2020
Feb. 24, 2020
2020 Plan        
Stock Option Plans        
Increase in number of shares authorized for issuance 100,000      
Number of shares authorized for issuance     100,000  
2020 Plan | Employee Stock Option | Minimum        
Stock Option Plans        
Exercise price of stock options as a percentage of fair value on the date of grant   100.00%    
Threshold voting rights above which the option exercise price may not be less than 110% of the fair market value (as a percent)   10.00%    
Exercise price of stock options as a percentage of fair value on the date of grant for an individual who owns more than 10% of voting rights   110.00%    
2020 Plan | Employee Stock Option | Maximum        
Stock Option Plans        
Term of the option   10 years    
2010 Plan        
Stock Option Plans        
Number of shares authorized for issuance       700,000
Number of shares authorized and unissued under the plan     125,465  
Nonemployee Directors Plan        
Stock Option Plans        
Number of shares authorized for issuance       350,000
Number of shares authorized and unissued under the plan     24,500