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v3.22.1

Note 2 - Revenue Recognition - Disaggregation of Revenues, Percentage (Details) | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Percentage of net sales | 100.00% | 100.00%
Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 28.60% | 27.30%
Carbon Flat Products [Member] |  |
Percentage of net sales | 54.60% | 53.20%
Tubular and Pipe Products [Member] |  |
Percentage of net sales | 16.80% | 19.50%
Hot Rolled Products [Member] |  |
Percentage of net sales | 30.30% | 28.10%
Hot Rolled Products [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Hot Rolled Products [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 30.30% | 28.10%
Hot Rolled Products [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Plate Products [Member] |  |
Percentage of net sales | 13.30% | 8.70%
Plate Products [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Plate Products [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 13.30% | 8.70%
Plate Products [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Cold Rolled Products [Member] |  |
Percentage of net sales | 5.00% | 6.20%
Cold Rolled Products [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Cold Rolled Products [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 5.00% | 6.20%
Cold Rolled Products [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Coated Products [Member] |  |
Percentage of net sales | 5.00% | 8.80%
Coated Products [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Coated Products [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 5.00% | 8.80%
Coated Products [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Specialty [Member] |  |
Percentage of net sales | 28.50% | 25.60%
Specialty [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 28.50% | 25.60%
Specialty [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Specialty [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Tube Products [Member] |  |
Percentage of net sales | 16.80% | 19.50%
Tube Products [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Tube Products [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%
Tube Products [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 16.80% | 19.50%
Product and Service, Other [Member] |  |
Percentage of net sales | 1.10% | 3.10%
Product and Service, Other [Member] | Specialty Metals Flat Products [Member] |  |
Percentage of net sales | 0.10% | 1.70%
Product and Service, Other [Member] | Carbon Flat Products [Member] |  |
Percentage of net sales | 1.00% | 1.40%
Product and Service, Other [Member] | Tubular and Pipe Products [Member] |  |
Percentage of net sales | 0.00% | 0.00%

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