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Note 19 - Other Operating Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 19 - Other Operating Expense (Details) [Line Items]
Gain (Loss) on Disposition of Assets	$ (4,277)us-gaap_GainLossOnDispositionOfAssets1	$ (4,430)us-gaap_GainLossOnDispositionOfAssets1
Other Cost and Expense, Operating	4,277us-gaap_OtherCostAndExpenseOperating	4,430us-gaap_OtherCostAndExpenseOperating	2,266us-gaap_OtherCostAndExpenseOperating
Other Operating Expense [Member] \| Piedra Redonda Platform [Member]
Note 19 - Other Operating Expense (Details) [Line Items]
Other Cost and Expense, Operating			$ 2,300