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RENTAL EXPENSE AND COMMITMENTS AND CONTINGENCIES (Details) (USD $) | 12 Months Ended | 36 Months Ended
--- | --- | ---
Dec. 31, 2012 item | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Mining Concessions | Dec. 31, 2010 Mining Concessions item | Dec. 31, 2012 Mining Concessions
RENTAL EXPENSE AND COMMITMENTS AND CONTINGENCIES |  |  |  |  |  |
Rental expense | $ 700,000 | $ 100,000 | $ 100,000 |  |  |
Lease Obligation |  |  |  |  |  |
2013 | 3,971,000 |  |  |  |  |
2014 | 3,861,000 |  |  |  |  |
2015 | 4,883,000 |  |  |  |  |
2016 | 521,000 |  |  |  |  |
2017 | 522,000 |  |  |  |  |
Number of options cancelled | 2 |  |  |  |  |
Option agreements to purchase mineral concessions |  |  |  |  |  |
Number of options agreement Company entered into to purchase mineral concessions in Mexico |  |  |  |  | 3 |
Percentage of mineral concessions purchased by the Company in connection with the option agreements |  |  |  |  | 100.00% |
Total cash commitment |  |  |  | 900,000 |  |
Total shares committed to be issued |  |  |  | 249,000 |  | 249,000
Period to acquire Mexico mining concessions, minimum |  |  |  | 36 months |  |
Cash already paid under the Mexico mining concessions option agreements | $ 712,000 | $ 10,059,000 | $ 1,300,000 |  |  | $ 750,000
Shares already issued under the Mexico mining concessions option agreements | 83,000 | 84,000 |  |  |  | 207,500

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