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RELATED PARTY TRANSACTIONS (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified | 0 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Feb. 24, 2011 | Dec. 31, 2012 | Dec. 31, 2012 Rights offering | Dec. 31, 2012 Rights offering | Dec. 31, 2012 Lexam L.P. | Dec. 31, 2011 Lexam L.P. | Dec. 31, 2012 Mr. McEwen | Dec. 31, 2012 Mr. McEwen Rights offering | Dec. 31, 2012 208
RELATED PARTY TRANSACTIONS |  |  |  |  |  |  |  |  |
Amount of expenses incurred and paid |  |  |  |  | $ 0.3 | $ 0.1 |  |  | $ 0.1
Minimum percentage interest of voting securities beneficially owned by related party |  |  |  |  |  |  | 5.00% |  |
Sale of shares for cash, net of issuance costs | 17,250 | 19,552 | 19,600 |  |  |  |  | 2,800 |
Sale of exchangeable shares for cash, net of issuance costs (in shares) |  | 7,800 | 7,800 |  |  |  |  | 3,900 |
Proceeds from issuance of new shares, net of expenses |  |  |  | $ 60.4 |  |  |  | $ 15.1 |

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