Note 4 - Inventories - Inventories by Category and Impact of Using LIFO Method (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Finished products | $ 596,965 | $ 619,598 |
| Work in process | 104,202 | 106,006 |
| Raw materials and supplies | 249,704 | 237,607 |
| FIFO Inventory Amount | 950,871 | 963,211 |
| Less: excess of FIFO cost over LIFO cost | (336,958) | (359,256) |
| Total inventories | $ 613,913 | $ 603,955 |
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of merchandise or goods held by the company that are readily available for sale on a FIFO basis. No definition available.
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| X | ||||||||||
- Definition Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed on a FIFO basis. No definition available.
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| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of merchandise or goods which are partially completed, are generally comprised of raw materials, labor and factory overhead costs, and which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing on a FIFO basis No definition available.
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| X | ||||||||||
- Definition The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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