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BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) | 12 Months Ended | 1 Months Ended |
--- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Feb. 28, 2013 Lexon | Jan. 31, 2013 Lexon
Restricted Cash |  |  |  |
Certificates of deposit and money market accounts | $ 4,011,000 | $ 9,492,000 |  |
Change in the balance of the asset retirement obligation |  |  |  |
Reserve for future restoration and reclamation costs at the beginning of the period | 4,498,057 | 4,735,759 |  |
Changes in cash flow estimates | 584,025 | 1,444,406 |  |
Costs incurred | (1,638,214) | (1,767,289) |  |
Accretion expense | 389,740 | 85,181 |  |
Reserve for future restoration and reclamation costs at the end of the period | 3,833,608 | 4,498,057 |  |
Contingent Liabilities - Off Balance Sheet Arrangements |  |  |  |
New surety bonds |  |  | 9,000,000 |
Required collateral as a percentage of bond amount (as a percent) |  |  | 40.00% |
Cash collateral for financial surety instruments | $ 4,010,937 | $ 9,491,865 | $ 3,600,000 | $ 9,000,000

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