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Note 15 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 17, 2022 | Feb. 28, 2023 | Feb. 28, 2022 | Jun. 16, 2022 | Nov. 19, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 50,000,000 |  |  | 300,000,000 |
Share-Based Payment Arrangement, Expense |  | $ 200 | $ 600 |  |
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount |  | 4,400 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 1,000 | $ 700 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  | 0 | 0 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Exercised (in shares) |  | 13,636 |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares) |  | 13,636 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures (in shares) |  | 37,708 |  |  |
Share-Based Payment Arrangement, Reversal of Expense |  | $ 10 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount |  | $ 3,200 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 1 year 7 months 6 days |  |  |
Restricted Stock Units (RSUs) [Member] | Former Employee [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures (in shares) |  | 37,708 |  |  |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 2 years 3 months 18 days |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | 3,800,000 |  |  |  | 2,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) | 1,300,000 |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 1,500 | $ 800 |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Share-Based Payment Arrangement, Option [Member] | Employees and Directors [Member] |  |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 500 | $ 100 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares) |  | 249,999 | 0 |  |

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