Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Stock-based Compensation (Details Textual)

v3.22.0.1
Note 13 - Stock-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Dec. 26, 2021
Dec. 27, 2020
Dec. 26, 2021
Dec. 27, 2020
Common Stock, Capital Shares Reserved for Future Issuance (in shares)     1,159,835   1,159,835  
Share-based Payment Arrangement, Expense     $ 224,000 $ 103,000 $ 564,000 $ 289,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value     283,000   283,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value     177,000   177,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value     58,000   196,000  
Proceeds from Stock Options Exercised     0 0 0 0
Payment, Tax Withholding, Share-based Payment Arrangement     19,000 43,000 $ 67,000 43,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)         7 months 9 days  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total     393,000   $ 393,000  
Share-based Payment Arrangement, Option [Member]            
Share-based Payment Arrangement, Expense     47,000 $ 12,000 $ 127,000 $ 40,000
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     $ 256,000   $ 256,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Month)         9 months  
Non-vested Stock Grants [Member] | Non Employee Directors [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 43,984 37,256        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested $ 327,000 $ 179,000