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Note 5 - Goodwill and Intangible Assets (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2015 | Jun. 30, 2015 | Dec. 31, 2014 | Jun. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Trade Names [Member] |  |  |  |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  | $ 8,000,000 |  |  |  |  |
Tubular And Pipe Products [Member] |  |  |  |  |  |  |
Goodwill, Impairment Loss |  | 16,451,000 | $ 23,836,000 | $ 16,500,000 | $ 16,451,000 | $ 23,836,000 |
Goodwill |  |  | 16,451,000 |  |  | 16,451,000 | $ 40,287,000
Specialty Metal Flat Products [Member] |  |  |  |  |  |  |
Goodwill, Impairment Loss | $ 500,000 |  |  |  | $ 500,000 |  |
Goodwill | 500,000 |  | 500,000 |  | 500,000 | 500,000 |
Impairment of Intangible Assets, Finite-lived |  | $ 0 |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 900,000 |  |  |  | 900,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 900,000 |  |  |  | 900,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 900,000 |  |  |  | 900,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | $ 900,000 |  |  |  | 900,000 |  |
Percentage of Decrease in Price of Hot Rolled Carbon Steel |  |  |  | 22.00% |  |  |
Amount Decrease Per Ton in Price of Hot Rolled Carbon Steel |  |  |  | $ 130 |  |  |
Goodwill, Impairment Loss |  |  |  |  | $ 16,951,000 | 23,836,000 |
Goodwill |  |  | $ 16,951,000 |  |  | $ 16,951,000 | $ 40,787,000
Finite-Lived Intangible Asset, Useful Life |  |  |  |  | 15 years |  |
Finite-Lived Intangible Assets, Remaining Amortization Period |  |  |  |  | 15 years |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | $ 900,000 |  |  |  | $ 900,000 |  |

X
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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