Note 19 - Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	2 Months Ended	6 Months Ended	28 Months Ended
	Feb. 28, 2011	Jun. 30, 2013	Jun. 30, 2013
Note 19 - Commitments and Contingencies (Details) [Line Items]
Value-Added Tax Rate	19.00%	18.00%	18.00%
Mining Companies [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Profit Sharing Percentage		8.00%	8.00%
Oil And Gas Companies [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Profit Sharing Percentage		5.00%	5.00%
Plant [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Plant Capacity (in Megawatts)		135
Power Transmission Lines [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Plant Capacity (in Megawatts)		420
Estimated Cost Of Gas-To-Power Project [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Construction and Development Costs (in Dollars)		$ 153.5
Estimated Cost Of Power Plant [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Construction and Development Costs (in Dollars)		133.5
Estimated Cost Of Pipeline Construction [Member]
Note 19 - Commitments and Contingencies (Details) [Line Items]
Construction and Development Costs (in Dollars)		$ 20.0