Note 15 - Business Segment Information - Net Sales By Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 30, 2023	Oct. 01, 2022	Oct. 02, 2021
Revenue	$ 649,188	$ 826,832	$ 590,601
Welded Wire Reinforcement [Member]
Revenue	375,771	495,401	358,334
PC Strand [Member]
Revenue	$ 273,417	$ 331,431	$ 232,267

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details