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Note 9 - Stock-based Compensation (Details Textual) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2021 shares | Jul. 31, 2025 USD ($) shares | Apr. 30, 2025 | Jul. 31, 2024 USD ($) | Jul. 31, 2025 USD ($) shares | Jul. 31, 2024 USD ($) | Jun. 30, 2024 shares | May 30, 2024 shares
Share-based Compensation Expense, Decrease From Forfeiture |  |  |  |  | $ 6,000 |  | $ 6,000 |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Right To Receive Shares |  |  | 1 |  |  | 1 |  |  |
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Share Vested and Deferred (in shares) | shares |  |  |  |  |  | 80,724 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  | $ 24,800 |  |  | $ 24,800 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  | 2 years 9 months 18 days |  |  |
Restricted Stock Units (RSUs) [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 3 years |  |  |
Restricted Stock Units (RSUs) [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 4 years |  |  |
Market-based Restricted Stock Units (MBRSUs) [Member] |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  | 200 |  |  | $ 200 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  | 8 months 12 days |  |  |
Market-based Restricted Stock Units (MBRSUs) [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 3 years |  |  |
Market-based Restricted Stock Units (MBRSUs) [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 4 years |  |  |
Performance-based Restricted Stock Units [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 2 years |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  |  | 5,700 |  |  | $ 5,700 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  | 2 years 7 months 6 days |  |  |
Performance-based Restricted Stock Units [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Target Achievement Percentage |  |  |  |  |  | 0.00% |  |  |
Performance-based Restricted Stock Units [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Target Achievement Percentage |  |  |  |  |  | 200.00% |  |  |
Performance Shares [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested |  |  | 6,000 |  |  |  |  |  |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested |  |  | 3,000 |  |  |  |  |  |
Liability-classified Performance Award [Member] |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | [1] |  | $ 3,231 |  |  | $ 3,231 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  |  |  |  | 1 year 9 months 18 days |  |  |
Liability-classified Performance Award [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  | 2 years |  | 2 years |  |  |
Liability-classified Performance Award [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  | 4 years |  |  |
The 2020 Omnibus Incentive Plan [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) | shares |  | 655,295 |  |  |  |  |  | 2,908,333 |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized, Annual Increase, Percentage |  | 5.00% |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | shares |  |  | 271,187 |  |  | 271,187 |  |  |
The 2020 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  | 4 years |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  | 10 years |  |  |  |  |  |  |
The 2020 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Days Following Termination of Employment or Service [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  | 90 days |  |  |  |  |  |  |
The 2020 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Months Following Optionees Death or Disability [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  | 12 months |  |  |  |  |  |  |
Inducement Plan [Member] |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | shares |  |  | 206,250 |  |  | 206,250 |  |  | 400,000
[1] | Expected to be recognized over a weighted-average period of 2.2 years.

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