Note 5 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Property, Plant and Equipment, Gross | $ 862,455 | $ 825,052 |
| Less: accumulated depreciation | (531,175) | (500,284) |
| Property, plant and equipment, net | 331,280 | 324,768 |
| Land and Land Improvements [Member] | ||
| Property, Plant and Equipment, Gross | 54,195 | 52,339 |
| Building and Building Improvements [Member] | ||
| Property, Plant and Equipment, Gross | 243,062 | 238,709 |
| Machinery and Equipment [Member] | ||
| Property, Plant and Equipment, Gross | 523,448 | 502,223 |
| Office Furniture, Vehicles and Computer Software [Member] | ||
| Property, Plant and Equipment, Gross | 17,420 | 15,604 |
| Construction in Progress [Member] | ||
| Property, Plant and Equipment, Gross | $ 24,330 | $ 16,177 |
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- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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