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FAIR VALUE ACCOUNTING (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2013 Item | Dec. 31, 2013 Item | Dec. 31, 2012
Liabilities: |  |  |
Litigation settlement liabilities |  | $ 200 |
Number of shares of common stock required to be issued as a part of settlement |  | 90,300 |
Number of vendors to which shares of common stock are required to be issued as a part of settlement | 1 | 1 |
Investment in MSC |  | 212,947 | 273,948
Total Loss |  | 62,963 | 18,468
Limo Complex |  |  |
Liabilities: |  |  |
Total Loss |  | 19,450 |
Other United States Properties |  |  |
Liabilities: |  |  |
Total Loss |  | 9,497 | 2,900
MSC |  |  |
Liabilities: |  |  |
Investment in MSC |  | 212,947 | 273,948
Total Loss |  | 95,878 |
MSC | Mineral property interests |  |  |
Liabilities: |  |  |
Total Loss |  | 152,554 |
Litigation settlement agreement with respect to the Los Azules Copper Project | TNR |  |  |
Liabilities: |  |  |
Shares of common stock required to be issued as part of settlement |  |  | 1,000,000
Recurring | Total |  |  |
Assets: |  |  |
Cash and cash equivalents |  | 24,321 | 70,921
Assets |  | 24,321 | 70,921
Liabilities: |  |  |
Accounts payable and accrued liabilities |  | 177 |
Litigation settlement liabilities |  |  | 3,830
Liabilities |  | 177 | 3,830
Recurring | Level 1 |  |  |
Assets: |  |  |
Cash and cash equivalents |  | 24,321 | 70,921
Assets |  | 24,321 | 70,921
Liabilities: |  |  |
Accounts payable and accrued liabilities |  | 177 |
Litigation settlement liabilities |  |  | 3,830
Liabilities |  | 177 | 3,830
Nonrecurring | Total |  |  |
Assets: |  |  |
Assets |  | 262,490 |
Nonrecurring | Total | Telken Tenements |  |  |
Assets: |  |  |
Assets |  | 26,442 |
Nonrecurring | Total | Este Tenements |  |  |
Assets: |  |  |
Assets |  | 5,337 |
Nonrecurring | Total | Piramides Tenements |  |  |
Assets: |  |  |
Assets |  | 9,736 |
Nonrecurring | Total | Tobias Tenements |  |  |
Assets: |  |  |
Assets |  | 11,645 |
Nonrecurring | Total | Limo Complex |  |  |
Assets: |  |  |
Assets |  | 23,438 |
Nonrecurring | Total | Other United States Properties |  |  |
Assets: |  |  |
Assets |  | 9,610 |
Nonrecurring | Total | MSC |  |  |
Liabilities: |  |  |
Investment in MSC |  | 176,282 |
Nonrecurring | Level 3 |  |  |
Assets: |  |  |
Assets |  | 262,490 |
Nonrecurring | Level 3 | Telken Tenements |  |  |
Assets: |  |  |
Assets |  | 26,442 |
Nonrecurring | Level 3 | Este Tenements |  |  |
Assets: |  |  |
Assets |  | 5,337 |
Nonrecurring | Level 3 | Piramides Tenements |  |  |
Assets: |  |  |
Assets |  | 9,736 |
Nonrecurring | Level 3 | Tobias Tenements |  |  |
Assets: |  |  |
Assets |  | 11,645 |
Nonrecurring | Level 3 | Limo Complex |  |  |
Assets: |  |  |
Assets |  | 23,438 |
Nonrecurring | Level 3 | Other United States Properties |  |  |
Assets: |  |  |
Assets |  | 9,610 |
Nonrecurring | Level 3 | MSC |  |  |
Liabilities: |  |  |
Investment in MSC |  | $ 176,282 |
Nonrecurring | Level 3 | MSC | Discounted cash flow | Weighted Average |  |  |
Liabilities: |  |  |
Discount Rate (as a percent) |  | 10.00% |
Long Term Gold Price (in dollars per ounce) |  | 1,300 |
Long Term Silver Price (in dollars per ounce) |  | 22.75 |
Nonrecurring | Level 3 | MSC | Discounted cash flow | Weighted Average | Argentina |  |  |
Liabilities: |  |  |
Inflation index (as a percent) |  | 10.00% |
Nonrecurring | Level 3 | MSC | Discounted cash flow | Weighted Average | United States |  |  |
Liabilities: |  |  |
Inflation index (as a percent) |  | 1.70% |

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