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Derivative Instruments - Derivatives - Derivative Instruments Presented in Statements of Operations (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Gain (loss) on derivatives not designated as hedging instruments under ASC 815 |  |
Kinross Calls | $ 90,000 | $ 48,000
Ely warrants |  | (74,000)
ILC warrants |  | (4,000)
Total gain (loss) | $ 90,000 | $ (30,000)

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