Document and Entity Information - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Mar. 06, 2016 |
Jun. 30, 2015 |
|
| Document Type | 10-K | ||
| Amendment Flag | false | ||
| Document Period End Date | Dec. 31, 2015 | ||
| Trading Symbol | htm | ||
| Entity Registrant Name | US GEOTHERMAL INC | ||
| Entity Central Index Key | 0001172136 | ||
| Current Fiscal Year End Date | --03-31 | ||
| Entity Filer Category | Smaller Reporting Company | ||
| Entity Common Stock, Shares Outstanding | 110,215,235 | ||
| Entity Current Reporting Status | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Well Known Seasoned Issuer | No | ||
| Entity Public Float | $ 57,023,455 | ||
| Document Fiscal Year Focus | 2016 | ||
| Document Fiscal Period Focus | FY |