Note 3 - Revenue Recognition - Disaggregation of Net Sales by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Revenue	$ 145,775	$ 165,714	$ 394,894	$ 491,664
Welded Wire Reinforcement [Member]
Revenue	84,486	96,698	223,038	284,044
Prestressed Concrete Strand [Member]
Revenue	$ 61,289	$ 69,016	$ 171,856	$ 207,620

Amount, excluding 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