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Stock-Based Compensation - Stock Option Grants (Details) - USD ($)
12 Months Ended
Mar. 27, 2022
Mar. 28, 2021
Mar. 29, 2020
Stock-based compensation      
Options Exercised (in shares) 2,500 0  
Exercise of stock options (in dollars) $ 10,900   $ 681,100
Options Exercised, weighted average exercise price (in dollars per share) $ 4.36    
Options Granted (in shares) 194,500 240,000  
Intrinsic value of stock options outstanding (in dollars) $ 0    
Intrinsic value of stock options currently exercisable (in dollars) 0    
Stock Options      
Stock-based compensation      
Unrecognized compensation costs (in dollars) $ 800,000    
Unrecognized compensation costs, period for recognition 4 years    
Tranche one | Stock Options      
Stock-based compensation      
Vesting percentage 25.00%    
Vesting period 1 year    
Tranche two | Stock Options      
Stock-based compensation      
Monthly percentage of vesting of share based compensation 2.78%    
Vesting period 3 years