Note K - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net Sales	$ 106,759	$ 130,748	$ 221,310	$ 268,046
Flat-roll [Member]
Net Sales	97,379	120,527	200,766	245,724
Flat-roll [Member] \| Prime Coil [Member]
Net Sales	96,232	119,195	198,066	243,168
Flat-roll [Member] \| Customer Owned [Member]
Net Sales	1,147	1,332	2,700	2,556
Tubular [Member]
Net Sales	9,380	10,221	20,544	22,322
Tubular [Member] \| Manufactured Pipe [Member]
Net Sales	$ 9,380	$ 10,221	$ 20,544	$ 22,322

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