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Note 2 - Significant Accounting Policies - Long-Lived Assets (Details) - USD ($) $ in Thousands | Jan. 31, 2024 | Jan. 31, 2023
--- | --- | ---
Property, plant and equipment | $ 87,493 | $ 82,930
Less accumulated depreciation | 49,873 | 56,412
Property, plant and equipment, net of accumulated depreciation | 37,619 | 26,518
Land, Buildings and Improvements [Member] |  |
Property, plant and equipment | $ 25,620 | 22,276
Land, Buildings and Improvements [Member] | Minimum [Member] |  |
Useful life (Year) | 3 years |
Land, Buildings and Improvements [Member] | Maximum [Member] |  |
Useful life (Year) | 30 years |
Machinery and Equipment [Member] |  |
Property, plant and equipment | $ 56,411 | 54,200
Machinery and Equipment [Member] | Minimum [Member] |  |
Useful life (Year) | 3 years |
Machinery and Equipment [Member] | Maximum [Member] |  |
Useful life (Year) | 10 years |
Furniture and Fixtures [Member] |  |
Property, plant and equipment | $ 3,169 | 3,727
Furniture and Fixtures [Member] | Minimum [Member] |  |
Useful life (Year) | 3 years |
Furniture and Fixtures [Member] | Maximum [Member] |  |
Useful life (Year) | 7 years |
Air Transportation Equipment [Member] |  |
Useful life (Year) | 3 years |
Property, plant and equipment | $ 2,293 | $ 2,727

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