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Note 12 - Equity Incentive Plan (Details Textual) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 25, 2020 | Nov. 30, 2020 | Nov. 30, 2019 | Jan. 27, 2011
Share-based Payment Arrangement, Expense |  | $ 247,645 | $ 195,416 |
Share-based Payment Arrangement, Expense, Tax Benefit |  | $ 176,435 | 122,022 |
Share-based Payment Arrangement, Amount Capitalized |  |  | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) |  | 0 |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) |  | 16,255 | 9,556 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  | 0 | 0 |
Share-based Payment Arrangement, Expense, Net of Shares Repurchased |  | $ 216,649 | $ 176,093 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares (in shares) |  | 0 | 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance (in shares) |  | 0 | 0 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  | $ 0 |  |
Proceeds from Stock Options Exercised |  | $ 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 |  | 1,000
Restricted Stock [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 3 years | 3 years |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 74,685 | 32,600 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares) |  | 4,833 | 1,400 |
Restricted Stock [Member] | Employees, Directors, and Consultants [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  | 128,750 | 56,750 |
Restricted Stock [Member] | Director [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  | 25,000 | 31,687 |
Restricted Stock [Member] | Employees [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  | 9,000 |
The 2020 Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) | 500,000 |  |  |

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