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Note 15 - Segment Information - Segment Reporting Information by Capital Expenditures and Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Capital expenditures $ 13,963 $ 7,738  
Assets 1,036,984   $ 1,023,572
Flat Products Segment [Member]      
Capital expenditures 11,063 6,172  
Assets 774,536   777,074
Tubular and Pipe Products [Member]      
Capital expenditures 2,900 1,566  
Assets 262,130   $ 245,962
Corporate Segment [Member]      
Capital expenditures 0 $ 0  
Assets $ 318