Quarterly report [Sections 13 or 15(d)]

Note 10 - Stock-based Compensation (Details Textual)

v3.26.3
Note 10 - Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 27, 2026
Sep. 28, 2025
Sep. 27, 2026
Sep. 28, 2025
Share-Based Payment Arrangement, Option [Member]        
Share-Based Payment Arrangement, Expense $ 171 $ 190 $ 374 $ 390
Time-based Restricted Shares [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value     $ 407 410
Time-based Restricted Shares [Member] | Minimum [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     1 year  
Time-based Restricted Shares [Member] | Maximum [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     3 years  
Non-vested Stock Grants [Member]        
Share-Based Payment Arrangement, Expense 112 $ 181 $ 315 $ 378
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 813   $ 813  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     15 years 3 months 18 days  
2021 Award plan [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)     1,250,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)     10 years  
Common Stock, Capital Shares Reserved for Future Issuance (in shares) 1,308,320   1,308,320