Note G - Derivative Financial Instruments - Gain (Loss) Recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Pre-tax gain (loss) recognized in OCI		$ 0
Revenue	$ 114,551	137,298
Reclassification out of Accumulated Other Comprehensive Income [Member] \| Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Revenue		(418)
Hot-rolled Coil Future Contracts [Member] \| Reclassification out of Accumulated Other Comprehensive Income [Member] \| Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Revenue		(418)
Hot-rolled Coil Future Contracts [Member] \| Designated as Hedging Instrument [Member]
Pre-tax gain (loss) recognized in OCI		$ 0

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details