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Note 6 - Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Jan. 31, 2025 | Jan. 31, 2024 | Jan. 31, 2023 | Jan. 31, 2022
Deferred Tax Assets, Valuation Allowance | $ 178,222 | $ 157,226 |  |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 21,000 |  |  |
Deferred Tax Assets, Written Off | 31,200 |  |  |
Undistributed Earnings of Foreign Subsidiaries | 6,000 |  |  |
Unrecognized Tax Benefits | 12,626 | 14,820 | $ 12,320 | $ 14,340
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 1,800 |  |  |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense | 900 | 700 | $ 300 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 1,800 | $ 1,200 |  |
Unrecognized Tax Benefits [Member] |  |  |  |
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit | 6,100 |  |  |
Domestic Tax Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards | 229,000 |  |  |
State and Local Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards | 316,100 |  |  |
Foreign Tax Jurisdiction [Member] |  |  |  |
Operating Loss Carryforwards | $ 62,500 |  |  |

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