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Note 14 - Equity Incentive Plan and Stock Based Compensation (Details Textual) - shares
3 Months Ended
Feb. 25, 2020
Feb. 28, 2022
Feb. 28, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 0    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)   0 0
Non-qualified Stock Units to Non-employee Directors Annually or Upon Election [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) 1,000    
Non-qualified Stock Units to Non-employee Directors, Quarterly [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) 1,000    
The 2020 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) 500,000