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Note 9 - Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Note 9 - Income Taxes (Details) [Line Items]          
Income Tax Expense (Benefit) (in Dollars) $ (3,635)   $ 1,831 $ (2,953) $ 3,532
Effective Income Tax Rate Reconciliation, Percent 14.00%   34.40% 12.20% 36.00%
Goodwill, Impairment Loss (in Dollars)   $ 16,500   $ 16,451  
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Percent 24.50%     26.20%  
Tubular and Pipe Products [Member]          
Note 9 - Income Taxes (Details) [Line Items]          
Goodwill, Impairment Loss (in Dollars) $ 16,500     $ 16,451