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Note 10 - Segment Reporting Information by Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Carbon Flat Products [Member]    
Net sales    
Net sales $ 161,434 $ 228,545
Depreciation and amortization    
Depreciation and Amortization 2,954 3,161
Operating income (loss)    
Operating Income (2,178) 470
Specialty Metal Flat Products [Member]    
Net sales    
Net sales 45,830 52,631
Depreciation and amortization    
Depreciation and Amortization 193 160
Operating income (loss)    
Operating Income 1,756 590
Tubular And Pipe Products [Member]    
Net sales    
Net sales 51,085 64,689
Depreciation and amortization    
Depreciation and Amortization 1,559 1,466
Operating income (loss)    
Operating Income 2,243 4,254
Corporate Segment [Member]    
Depreciation and amortization    
Depreciation and Amortization 25 25
Operating income (loss)    
Operating Income (1,786) (1,969)
Net sales 258,349 345,865
Depreciation and Amortization 4,731 4,812
Operating Income 35 3,345
Other income (loss), net (5) (31)
Income before interest and income taxes 30 3,314
Interest and other expense on debt 1,285 1,563
Income (loss) before income taxes $ (1,255) $ 1,751