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Revenue Recognition - Percentage of Sales by Major Product Lines (Detail) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Product Line |  |  |  |
Percentage of sales by major product lines | 100.00% | 100.00% | 100.00% | 100.00%
Carbon Steel Flat [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 28.00% | 30.00% | 28.00% | 29.00%
Carbon Steel Plate [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 10.00% | 10.00% | 9.00% | 11.00%
Carbon Steel Long [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 12.00% | 13.00% | 12.00% | 13.00%
Stainless Steel Flat [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 14.00% | 14.00% | 14.00% | 14.00%
Stainless Steel Plate [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 5.00% | 5.00% | 5.00% | 5.00%
Stainless Steel Long [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 5.00% | 4.00% | 5.00% | 4.00%
Aluminum Flat [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 16.00% | 16.00% | 16.00% | 16.00%
Aluminum Plate [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 3.00% | 2.00% | 4.00% | 2.00%
Aluminum Long [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 6.00% | 4.00% | 6.00% | 4.00%
Other [Member] |  |  |  |
Product Line |  |  |  |
Percentage of sales by major product lines | 1.00% | 2.00% | 1.00% | 2.00%

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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