| Note 4 - Taxes | 6 Months Ended | 
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| Jul. 31, 2024 | |
| Notes to Financial Statements | |
| Income Tax Disclosure [Text Block] | (4) Taxes 
 For the three and six months ended July 31, 2024, for continuing operations, the Company recorded a tax benefit of $2.1 million and $3.6 million, respectively, on a pretax loss of $41.6 million and $70.8 million, respectively. For the three and six months ended July 31, 2023, for continuing operations, the Company recorded a tax benefit of $1.9 million and $6.3 million, respectively, on a pretax loss of $33.9 million and $81.8 million, respectively. For each period, the tax benefit reflects the effect of non-deductible items, current period changes in the Company’s valuation allowance on its deferred tax assets and the impact of foreign tax rate differential. | 
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- References No definition available. 
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- Definition The entire disclosure for income tax. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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