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Note 24 - Operating Leases and Purchase Obligations (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 24 - Operating Leases and Purchase Obligations (Details) [Line Items]
Operating Leases, Rent Expense	$ 3,900,000us-gaap_LeaseAndRentalExpense	$ 2,900,000us-gaap_LeaseAndRentalExpense	$ 1,200,000us-gaap_LeaseAndRentalExpense
Other Liabilities, Current	22,533,000us-gaap_OtherLiabilitiesCurrent	24,494,000us-gaap_OtherLiabilitiesCurrent
Exploratory Expenditures for Block Z1 [Member]
Note 24 - Operating Leases and Purchase Obligations (Details) [Line Items]
Other Liabilities, Current	$ 22,500,000	$ 23,900,000

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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