Note 4 - Unconsolidated Investments (Details)	6 Months Ended
	Jun. 30, 2013
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
Expected Period To Begin Construction	1 year
Period To Start Remaining Phases Of Construction After Commencement Of First Phase	18 months
Watts And More Ltd [Member]
Note 4 - Unconsolidated Investments (Details) [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	60.00%