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Note 2 - Summary of Significant Accounting Policies (Details Textual) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 30, 2014 USD ($) | Apr. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Investments |  |  |  | $ 0 | $ 0 |
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax |  |  |  |  |  | $ (13,497,000)
Proceeds from Divestiture of Businesses |  |  |  |  | 4,300,000 | 29,791,000
Book Overdrafts |  |  |  | 0 | $ 0 |
Workers' Compensation Liability |  |  |  | $ 3,400,000 |  |
Number of Customers with Receivable Balance in Excess of Ten Percent of Receivables |  |  |  | 2 | 0 |
Accrued Liability [Member] |  |  |  |  |  |
Workers' Compensation Liability, Current |  |  |  | $ 600,000 |  |
Other Long-term Liabilities [Member] |  |  |  |  |  |
Workers' Compensation Liability, Noncurrent |  |  |  | $ 2,800,000 |  |
Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  | 3 years |  |
Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  | 15 years |  |
Land Improvements [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 15 years |  |
Land Improvements [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 30 years |  |
Building [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 20 years |  |
Building [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 40 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 3 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  | 30 years |  |
Disposal of OCTG Business [Member] |  |  |  |  |  |
Proceeds from Sale of Productive Assets | $ 42,700,000 |  |  |  |  |
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax | 13,500,000 |  | $ 1,800,000 |  |  |
Goodwill, Written off Related to Sale of Business Unit |  |  |  |  |  | 4,400,000
Business Acquisition Purchase Price Amount Held In Escrow To Secure Indemnification Obligations | 4,300,000 |  |  |  |  |
Repayments of Debt and Capital Lease Obligations | 5,000,000 |  |  |  |  |
Business Acquisition, Transaction Costs | $ 1,800,000 |  |  |  |  |
Proceeds from Divestiture of Businesses |  |  |  |  |  | $ 29,800,000
Escrow Deposit Released |  | $ 4,300,000 |  |  |  |

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