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Note 16 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 31, 2025 | Aug. 31, 2024 | Aug. 31, 2025 | Aug. 31, 2025 | Aug. 31, 2024 | Jun. 17, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  | 137,001 |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expense | $ 0.5 | $ 0.4 |  | $ 1.4 | $ 1.2 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  | 120,830 |  |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | 3.9 |  | $ 3.9 | $ 3.9 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  | 1 year 1 month 6 days |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares) |  |  |  | 106,001 |  |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) |  |  |  | 3,061 |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares) |  |  |  | 102,940 |  |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 33.33% |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) |  | $ 6 |  |  | $ 6 |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 33.33% |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) |  | 9 |  |  | $ 9 |
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 33.33% |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, 20 Day Volume Weighted Average Closing Price (in dollars per share) |  | $ 12 |  |  | $ 12 |
Restricted Stock Units (RSUs), Time-based [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  | 88,344 |  |
Restricted Stock Units (RSUs), Performance-Based [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  | 32,486 |  |
Restricted Stock Units (RSUs), Excluding Time-based Units [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) |  |  |  |  | 600,000 |
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expense | 0.2 | $ 0.4 |  | $ 0.9 | $ 1.4 |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | 0.4 |  | $ 0.4 | $ 0.4 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  | 1 year 2 months 12 days |  |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares) |  |  |  | 36,807 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  | 137,001 |  |
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
Share-Based Payment Arrangement, Expense | $ 0.7 | $ 0.8 |  | $ 2.3 | $ 2.6 |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Minimum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Shares Earned, Percent |  |  | 0.00% |  |  |
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Actual Shares Earned, Percent |  |  | 200.00% |  |  |

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