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Marketable Securities and Fair Value Measurements (Details Textual) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2012 | Sep. 30, 2011 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Jul. 01, 2015
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Carryover basis |  |  |  |  |  |  |  | $ 0
Decrease in fair value included in change in fair value of common stock warrants |  |  | $ 3,000 | $ 616,000 | $ (511,000) | $ 929,000 |  |
Common stock warrants |  |  | 1,812,502 |  | 1,812,502 |  | $ 1,301,138 |
Onco Sec Common Stock Warrants [Member] |  |  |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Decrease in fair value included in change in fair value of common stock warrants |  |  | $ 0 | $ 98,000 | $ 6,000 | $ 461,000 |  |
Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Number of shares held in an affiliated entity (shares) |  |  | 1,644,155 |  | 1,644,155 |  | 1,644,155 |
Using Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Common Stock [Member] |  |  |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Investment owned (shares) |  |  | 395,758 |  | 395,758 |  |  |
Using Significant Unobservable Inputs (Level 3) [Member] |  |  |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Decrease in fair value included in change in fair value of common stock warrants |  |  |  |  | $ (511,364) |  |  |
Using Significant Unobservable Inputs (Level 3) [Member] | First warrant [Member] |  |  |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Common stock purchase warrant (in shares) |  | 50,000 |  |  |  |  |  |
Exercise price of a five-year warrant ($ per share) |  | $ 24.00 |  |  |  |  |  |
Using Significant Unobservable Inputs (Level 3) [Member] | Second warrant [Member] |  |  |  |  |  |  |  |
Marketable Securities and Fair Value Measurements (Textual) [Abstract] |  |  |  |  |  |  |  |
Common stock purchase warrant (in shares) | 150,000 |  |  |  |  |  |  |
Term of the warrants in years | 5 years |  |  |  |  |  |  |
Exercise price of a five-year warrant ($ per share) | $ 20.00 |  |  |  |  |  |  |

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- Definition Class of Warrant or Right, Term + References No definition available. + Details
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- Definition Exercise price of the warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
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- Definition This item represents the cost of equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments for other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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