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Note 11 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Net Sales	$ 134,777	$ 114,551
Flat-roll [Member]
Net Sales	124,067	103,387
Flat-roll [Member] | Prime Coil [Member]
Net Sales	122,846	101,834
Flat-roll [Member] | Customer Owned [Member]
Net Sales	1,221	1,553
Tubular [Member]
Net Sales	10,710	11,164
Tubular [Member] | Manufactured Pipe [Member]
Net Sales	$ 10,710	$ 11,164

X

- Definition

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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