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Fair Value Measurements (Details 2) - Significant Unobservable Inputs (Level 3) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Change in fair value of the financial assets    
Balance at beginning of year $ 550,000 $ 717,500
Decrease in fair value included in change in fair value of common stock warrants (544,030) (167,500)
Balance at end of year $ 5,970 $ 550,000