Note 2 - Divestiture (Details) (USD $)	0 Months Ended	1 Months Ended	6 Months Ended
	Dec. 14, 2012	Apr. 27, 2012	Jun. 30, 2014	Dec. 31, 2013
Note 2 - Divestiture (Details) [Line Items]
Other Liabilities, Current			$ 40,955,000	$ 24,494,000
Other Liabilities, Noncurrent				16,755,000
Block Z-1 [Member]
Note 2 - Divestiture (Details) [Line Items]
Proceeds from Sale of Oil and Gas Property and Equipment		150,000,000
Ownership Percentage Sold, Oil and Gas Exploration Block	49.00%	49.00%
Capital and Exploratory Expenditures Funding Agreement		185,000,000	69,900,000
Participating Interest Loans		65,000,000
Capital and Exploratory Expenditures Funding Agreement, Carrying Value			45,600,000	81,300,000
Other Liabilities, Current			40,700,000	23,900,000
Other Liabilities, Noncurrent			$ 0	$ 16,800,000