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Other Assets - Other Assets (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]    
Deferred offering costs RMB Loan $ 322,000 $ 518,000
Accumulated Mt. Hamilton advance royalty payments (1) 600,000 300,000
Furniture and Fixtures, net of accumulated depreciation 95,000 143,000
Exploration bonds and other assets 52,000 111,000
Total other assets $ 1,069,000 $ 1,072,000