Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stock-based Compensation - Grants and Compensation Expense in Connection With the Performance Bonus Plan (Details)

v3.19.3.a.u2
Note 7 - Stock-based Compensation - Grants and Compensation Expense in Connection With the Performance Bonus Plan (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 29, 2019
Dec. 29, 2019
Dec. 30, 2018
Mar. 31, 2019
Shares Vested, Taxes Remitted $ 3,000 $ 3,000    
Performance Bonus Plan [Member]        
Shares Vested (in shares)   21,125 41,726  
Shares Vested, Aggregate Value   $ 109,000 $ 246,000  
Shares Vested, Taxes Remitted   $ 17,000 $ 95,000  
Performance Shares [Member]        
Number of Shares (in shares)   0   0
Performance Shares [Member] | Earned in Fiscal Year 2016, Granted in Fiscal Year 2017 [Member] | Performance Bonus Plan [Member]        
Number of Shares (in shares)   41,205    
Shares Vested (in shares)   20,601  
Shares Vested, Aggregate Value   $ 122,000  
Shares Vested, Taxes Remitted   $ 39,000  
Performance Shares [Member] | Earned in Fiscal Year 2017, Granted in Fiscal Year 2018 [Member] | Performance Bonus Plan [Member]        
Number of Shares (in shares)   42,250    
Shares Vested (in shares)   21,125 21,125  
Shares Vested, Aggregate Value   $ 109,000 $ 124,000  
Shares Vested, Taxes Remitted   $ 17,000 $ 56,000