CHANGE IN METHOD OF ACCOUNTING FOR SUBSIDIARY AND RECLASSIFATION OF STATEMENT OF OPERATIONS (Tables)
 3 Months Ended 6 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
    For the Three Months Ended September 30, 2011  
    Originally              
    Reported     Net Change     As Reclassified  
                   
Plant Revenues:                  
           Energy sales $   629,582   $   942,111   $   1,571,693  
           Energy credit sales   30,484     87,432     117,916  
                   Total plant revenues   660,066     1,029,543     1,689,609  
                   
Plant Expenses:                  
           Plant production expenses   -     938,683     986,883  
           Well repairs and maintenance   -     329,074     329,074  
           Depreciation and amortization   -     710,335     710,335  
                   Total plant operating expenses   -     2,026,292     2,026,292  
                   
Net Income (Loss) from Plant Operations   660,066     (996,749 )   (336,683 )
Other Operating Revenues:                  
     Land, water and mineral rights lease   45,012     (45,012 )   -  
     Management fees   62,500     (62,500 )   -  
     Gain from investment in subsidiary   55,430     (55,430 )   -  
Net income (loss) from plant operations and other operating revenues   823,008     (1,159,691 )   (336,683 )
                   
Expenses (Income):                  
     Consulting fees   782     (782 )   -  
     Corporate administration   196,073     -     196,073  
     Professional & management fees   259,550     782     260,332  
     Salaries and wages   249,751     -     249,751  
     Stock based compensation   317,146     -     317,146  
     Travel and promotion   72,629     -     72,629  
     Other plant expenses   614,189     (614,189 )   -  
     Leases and well testing   38,903     -     38,903  
     Other (income) expenses   -     (3,739 )   (3,739 )
           Total expenses (income)   1,749,023     (617,928 )   1,131,095  
                   
                    Loss from Operations   (926,015 )   (541,763 )   (1,467,778 )
                   
Other income   3,434     (3,434 )   -  
                   
Net Loss   (922,581 )   (545,197 )   (1,467,778 )
     Net loss attributable to non-controlling interest   538     545,197     545,735  
                   
Net loss attributable to U.S. Geothermal Inc.   (922,043 )   -     (922,043 )
Other comprehensive Income   (35,786 )   -     (35,786 )
                   
Comprehensive Loss attributable to U.S. Geothermal Inc. $   (957,829 ) $   -   $   (957,829 )
    For the Six Months Ended September 30, 2011  
    Originally              
    Reported     Net Change     As Reclassified  
                   
Plant Revenues:                  
     Energy sales $   1,253,313   $   1,593,170   $   2,846,483  
     Energy credit sales   68,824     172,277     241,101  
           Total plant revenues   1,322,137     1,765,447     3,087,584  
                   
Plant Expenses:                  
     Plant production expenses   -     2,035,027     2,035,027  
     Well repairs and maintenance   -     1,809,780     1,809,780  
     Depreciation and amortization   -     1,475,741     1,475,741  
           Total plant expenses   -     5,320,548     5,320,548  
                   
Net Income (Loss) from Plant Operations   1,322,137     (3,555,101 )   (2,232,964 )
Other Operating Revenues:                  
     Land, water and mineral rights lease   90,024     (90,024 )   -  
     Management fees   125,000     (125,000 )   -  
     Gain from investment in subsidiary   94,107     (94,107 )   -  
Gain (loss) from plant operations and other operating revenues   1,631,268     (3,864,232 )   (2,232,964 )
                   
Expenses (Income):                  
     Consulting fees   2,845     (2,845 )   -  
     Corporate administration   464,037     -     464,037  
     Professional & management fees   1,526,316     2,845     1,529,161  
     Salaries and wages   848,787     -     848,787  
     Stock based compensation   852,044     -     852,044  
     Travel and promotion   110,015     -     110,015  
     Plant operating expenses   1,293,078     (1,293,078 )   -  
     Leases and well testing   73,647     -     73,647  
     Other (income) expense   -     (9,522 )   (9,522 )
           Total expenses (income)   5,170,769     (1,302,600 )   3,868,169  
                   
    (3,539,501 )   (2,561,632 )   (6,101,133 )
                   
Other (income) expenses   8,915     (8,915 )   -  
                   
Net Loss before accumulated change   (3,530,586 )   (2,570,547 )   (6,101,133 )
     Accumulated effect on prior period application of capitalization policy   262,305     -     262,305  
                   
Net Loss   (3,268,281 )   (2,570,547 )   (5,838,828 )
     Net loss attributable to non-controlling interest   5,214     2,570,547     2,575,761  
                   
Net loss attributable to U.S. Geothermal Inc.   (3,263,067 )   -     (3,263,067 )
Other comprehensive Income   (103,575 )   -     (103,575 )
                   
Comprehensive Loss attributable to U.S. Geothermal Inc. $   (3,366,642 ) $   -   $   (3,366,642