Note C - Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Inventory, Net	$ 113,901	$ 86,246
Prime Coil Inventory [Member]
Prime Coil Inventory	97,646	75,917
Non-standard Coil Inventory [Member]
Prime Coil Inventory	739	278
Tubular Inventory [Member]
Prime Coil Inventory	8,187	5,193
Tubular Finished Goods	$ 7,329	$ 4,858

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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