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Note 12 - Segment Information (Detail) - Segment Reporting Information (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Goodwill |  |
Goodwill | $ 40,787 | $ 40,787
Assets |  |
Assets | 715,417 | 705,994
Flat Products [Member] |  |
Goodwill |  |
Goodwill | 500 | 500
Assets |  |
Assets | 490,520 | 480,487
Tubular and Pipe Products [Member] |  |
Goodwill |  |
Goodwill | 40,287 | 40,287
Assets |  |
Assets | $ 224,897 | $ 225,507

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