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Warrants (Number of Warrants, Exercise Price, Aggregate Proceeds of Warrants if Exercised) (Details) | 12 Months Ended
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Dec. 31, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Issuances | 4,210,000
Shares, Balance at December 31, 2015 | 1,209,649
Warrants Through March 2015 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Issuances | 488,484
Shares, Balance at December 31, 2015 | 488,484
Aggregate proceeds if exercised | $ | $ 5,251,203
Weighted Average Exercise Price, Issuances | $ / shares | $ 10.75
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares | $ 10.75
2013 Series B Warrants [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Balance at December 31, 2014 | 523,691
Shares, Exercises | (56,645)
Shares, Balance at December 31, 2015 | 467,046
Aggregate proceeds if exercised | $ | $ 3,269,322
Weighted Average Exercise Price, Outstanding at December 31, 2014 | $ / shares | $ 7.00
Weighted Average Exercise Price, Exercises | $ / shares | 7.00
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares | $ 7.00
Warrants Through December 2013 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Balance at December 31, 2014 | 86,408
Shares, Balance at December 31, 2015 | 86,408
Aggregate proceeds if exercised | $ | $ 712,866
Weighted Average Exercise Price, Outstanding at December 31, 2014 | $ / shares | $ 12.50
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares | $ 8.25
Convertible Promissory Notes [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Balance at December 31, 2014 | 140,608
Shares, Balance at December 31, 2015 | 140,608
Aggregate proceeds if exercised | $ | $ 984,254
Weighted Average Exercise Price, Outstanding at December 31, 2014 | $ / shares | $ 7.00
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares | $ 7.00
Warrants Through 2011 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Balance at December 31, 2014 | 27,103
Shares, Balance at December 31, 2015 | 27,103
Aggregate proceeds if exercised | $ | $ 623,369
Weighted Average Exercise Price, Outstanding at December 31, 2014 | $ / shares | $ 23.00
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares | $ 23.00
Warrant [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Shares, Balance at December 31, 2014 | 777,810
Shares, Issuances | 488,484
Shares, Exercises | (56,645)
Shares, Balance at December 31, 2015 | 1,209,649
Aggregate proceeds if exercised | $ | $ 10,838,453
Weighted Average Exercise Price, Outstanding at December 31, 2014 | $ / shares | $ 8.00
Weighted Average Exercise Price, Issuances | $ / shares | 10.75
Weighted Average Exercise Price, Exercises | $ / shares | 7.00
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares | $ 8.96

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