CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Plant Revenues:    
Energy sales $ 6,988,660 $ 1,057,092
Energy credit sales 98,330 101,995
Total plant operating revenues 7,086,990 1,159,087
Plant Expenses:    
Plant production expenses 1,326,081 72,888
Well repairs and maintenance 0 1,449,821
Depreciation and amortization 1,658,400 698,153
Total plant operating expenses 2,984,481 2,220,862
Net Income (Loss) from Plant Operations 4,102,509 (1,061,775)
Expenses (Income):    
Corporate administration 292,240 178,939
Professional and management fees 299,381 112,163
Salaries and wages 564,488 205,750
Stock based compensation 59,362 304,131
Travel and promotion 50,505 33,356
Leases and well testing 162,009 25,020
Interest expense 480,102 0
Other (income) expenses (40,657) 494,724
Total expenses (income) 1,867,430 1,354,083
Net Income (Loss) Before Income Tax Expense 2,235,079 (2,415,858)
Net Income Tax :    
Income taxes 853,800 0
Effect of net deferred tax assets (853,800) 0
Net income taxes 0 0
Net Income (Loss) Before Net Income (Loss) Attributable to U.S. Geothermal, Inc. 2,235,079 (2,415,858)
Net (income) loss attributable to the non-controlling interests (846,556) 772,135
Net Income (Loss) Attributable to U.S. Geothermal Inc. 1,388,523 (1,643,723)
Other Comprehensive Income (Loss):    
Unrealized income (loss) on investment in equity securities (19,665) 31,551
Comprehensive Income (Loss) Attributable to U.S. Geothermal Inc. $ 1,368,858 $ (1,612,172)
Basic Net Income (Loss) Per Share Attributable to U.S. Geothermal Inc. $ 0.01 $ (0.02)
Diluted Net Income (Loss) Per Share Attributable to U.S. Geothermal Inc. $ 0.01 $ (0.02)
Weighted Average Number of Shares Outstanding for Basic Calculations 101,516,764 85,016,732
Weighted Average Number of Shares, Stock Options and Warrants Outstanding for Diluted Calculations 122,568,560 85,016,732