Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stock-based Compensation (Details Textual)

v3.20.4
Note 7 - Stock-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Dec. 27, 2020
Jun. 10, 2020
Jan. 18, 2019
Aug. 31, 2020
Aug. 31, 2019
Dec. 27, 2020
Dec. 29, 2019
Dec. 27, 2020
Dec. 29, 2019
Common Stock, Capital Shares Reserved for Future Issuance (in shares) 268,000         268,000   268,000  
Share-based Payment Arrangement, Expense           $ 103,000 $ 79,000 $ 289,000 $ 219,000
Share-based Payment Arrangement, Amount Capitalized               0  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value $ 562,000         562,000   562,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 165,000         165,000   165,000  
Proceeds from Stock Options Exercised           0 0 0 0
Payment, Tax Withholding, Share-based Payment Arrangement           43,000 3,000 $ 43,000 3,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)               276 days  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total 336,000         336,000   $ 336,000  
Executive Officer [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   20,000              
Share Base Compensation Arrangement by Share Based Payment Award Equity Instrument Other Than Options Grants in Period Total Grant Date Fair Value (in dollars per share)   $ 4.92              
Share-based Payment Arrangement, Option [Member]                  
Share-based Payment Arrangement, Expense           12,000 11,000 $ 40,000 $ 31,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)               2 years 2 years
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount $ 58,000         58,000   $ 58,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month) 279 days                
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2018 [Member]                  
Share-based Payment Arrangement, Expense               $ 6,000
Non-vested Stock Grants [Member] | Non Employee Directors [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)               2 years  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)       37,256 28,000        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested       $ 179,000 $ 135,000        
Restricted Stock [Member] | Subsidiary CEO And President [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     25,000            
Share Base Compensation Arrangement by Share Based Payment Award Equity Instrument Other Than Options Grants in Period Total Grant Date Fair Value (in dollars per share)     $ 5.86            
Performance Shares [Member]                  
Share-based Payment Arrangement, Expense           $ 0 $ 0 $ 0 $ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)           0 0 0 0
Performance Shares [Member] | Fiscal Year 2018 [Member]                  
Payment, Tax Withholding, Share-based Payment Arrangement                 $ 17,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)                 21,125
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value                 $ 109,000
The 2014 Omnibus Equity Compensation Plan [Member] | Share-based Payment Arrangement, Option [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)               10 years