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Fair Value Measurements (Details Textual) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2012 $ / shares shares | Sep. 30, 2011 $ / shares shares | Dec. 31, 2015 USD ($) warrant shares | Dec. 31, 2014 USD ($) shares | Dec. 31, 2013 USD ($) | Jul. 01, 2015 USD ($)
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Carryover basis |  |  |  |  |  | $ 0
Long-term asset associated with warrants |  |  | $ 6,000 |  |  |
Change in the fair value |  |  | (722,000) | $ (516,000) | $ 46,100,000 |
Common stock warrants |  |  | 1,301,138 | 2,022,729 |  |
First warrant |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Change in the fair value |  |  | $ (544,000) | $ (168,000) | $ 450,000 |
Quoted Prices in Active Markets (Level 1) |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Number of shares held in an affiliated entity | shares |  |  | 1,644,155 | 1,644,155 |  |
Quoted Prices in Active Markets (Level 1) | Common stock |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Number of shares owned | shares |  |  | 395,758 |  |  |
Significant Unobservable Inputs (Level 3) |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Number of warrants received to purchase shares of common stock | warrant |  |  | 2 |  |  |
Common stock purchase warrant (shares) | shares |  |  | 0 | 2,419,425 |  |
Change in the fair value |  |  | $ (721,591) | $ (515,643) |  |
Significant Unobservable Inputs (Level 3) | First warrant |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Common stock purchase warrant (shares) | shares |  | 50,000 |  |  |  |
Term of the warrants in years |  | 5 years |  |  |  |
Exercise price of a five-year warrant ($ per share) | $ / shares |  | $ 24.00 |  |  |  |
Significant Unobservable Inputs (Level 3) | Second warrant |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |
Common stock purchase warrant (shares) | shares | 150,000 |  |  |  |  |
Term of the warrants in years | 5 years |  |  |  |  |
Exercise price of a five-year warrant ($ per share) | $ / shares | $ 20.00 |  |  |  |  |

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