Note 4 - Unconsolidated Investments (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Sarulla [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Jointly Owned Utility Plant, Proportionate Ownership Share	12.75%
Expected Power Generating Capacity	330
Contract Effective Date	Apr. 04, 2013
Power Plant Usage Agreement Term	30 years
Number Of Phases Of Construction	3
Power Utilization	110
Period To Start Remaining Phases Of Construction After Commencement Of First Phase	18 months
Payments to Acquire Projects (in Dollars)	$ 600,000
Lenders Consortium [Member] | Sarulla [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Senior Notes (in Dollars)	$ 1,170,000,000