Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Shared-based Compensation and Employee Benefits Plans - Changes in Stock Options Outstanding (Details)

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Note 11 - Shared-based Compensation and Employee Benefits Plans - Changes in Stock Options Outstanding (Details) - USD ($)
9 Months Ended 12 Months Ended
Dec. 26, 2020
Mar. 28, 2020
Mar. 30, 2019
Outstanding, Shares (in shares) 240,758 182,366  
Outstanding, weighted average exercise price (in dollars per share) $ 5.86 $ 6.15  
Outstanding, Weighted average remaining contractual terms (Year) 7 years 73 days 7 years 328 days 8 years 146 days
Outstanding
Granted, Shares (in shares) 10,000 73,880  
Granted, weighted average exercise price (in dollars per share) $ 3.85 $ 4.98  
Granted, Weighted average remaining contractual terms (Year) 9 years 219 days 9 years 73 days  
Forfeited / Expired, Shares (in shares)   (15,488)  
Forfeited / Expired, weighted average exercise price (in dollars per share)   $ 5.13  
Outstanding, Shares (in shares) 250,758 240,758 182,366
Outstanding, weighted average exercise price (in dollars per share) $ 5.78 $ 5.86 $ 6.15
Exercisable, shares (in shares) 139,904    
Exercisable, weighted average exercise price (in dollars per share) $ 6.55    
Exercisable, Weighted average remaining contractual terms (Year) 6 years 146 days    
Exercisable    
Expected to vest in the future, shares (in shares) 110,854    
Expected to vest in the future, weighted average exercise price (in dollars per share) $ 4.80    
Expected to vest in the future, Weighted average remaining contractual terms (Year) 8 years 73 days    
Expected to vest in the future