Annual report pursuant to Section 13 and 15(d)

Note 14 - Stock Based Compensation and Employee Benefits Plans (Details Textual)

v3.21.2
Note 14 - Stock Based Compensation and Employee Benefits Plans (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 27, 2021
Mar. 27, 2021
Mar. 28, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   148,000 73,880
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)   $ 3.48 $ 3.75
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   3 years 109 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares (in shares)   76,153 48,956
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   $ 366,878 $ 206,255
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)   0 0
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent   100.00%  
Defined Contribution Plan, Vesting Period (Year)   4 years  
Defined Contribution Plan, Employer Discretionary Contribution Amount   $ 17,000 $ 22,000
Share-based Payment Arrangement, Option [Member]      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 488,000 488,000  
Share-based Payment Arrangement, Expense   $ 314,300 $ 213,000
Stock Appreciation Rights (SARs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   0 0
Restricted Stocks [Member]      
Share-based Payment Arrangement, Expense   $ 39,700 $ 88,000
The 2018 Equity Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) 416,667 416,667  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 144,443 144,443  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) 138,000    
The 2018 Equity Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 1 year    
The 2018 Equity Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)   4 years  
The 2018 Equity Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)   5 years  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)   10 years  
Equity Incentive Plan 2005 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 0 0  
Restricted Stocks [Member]      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total $ 0 $ 0