Note 14 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Net Sales	$ 516,251	$ 547,542
Coil [Member]
Net Sales	43,477	61,901
Coil [Member] \| Prime Coil [Member]
Net Sales	467,510	482,890
Coil [Member] \| Customer Owned [Member]
Net Sales	5,264	2,751
Tubular [Member] \| Manufactured Pipe [Member]
Net Sales	$ 43,477	$ 61,901

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