Warrants (Number of Warrants, Exercise Price, Aggregate Proceeds of Warrants if Exercised) (Details) - 6 months ended Jun. 30, 2015 - USD ($)	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issuances	4,210,000
Shares, Balance at June 30, 2015	1,209,650
Warrants Through March 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at December 31, 2014
Shares, Issuances	488,485
Shares, Balance at June 30, 2015	488,485
Aggregate proceeds if exercised	$ 5,373,335
Weighted Average Exercise Price, Outstanding at December 31, 2014
Weighted Average Exercise Price, Issuances	$ 11.00
Weighted Average Exercise Price, Outstanding at June 30, 2015	$ 11.00
2013 Series B Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at December 31, 2014	523,690
Shares, Exercises	56,644
Shares, Balance at June 30, 2015	467,046
Aggregate proceeds if exercised	$ 3,269,322
Weighted Average Exercise Price, Outstanding at December 31, 2014	$ 7.00
Weighted Average Exercise Price, Exercises	7.00
Weighted Average Exercise Price, Outstanding at June 30, 2015	$ 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 June 30, 2015	86,408
Aggregate proceeds if exercised	$ 734,468
Weighted Average Exercise Price, Outstanding at December 31, 2014	$ 12.50
Weighted Average Exercise Price, Outstanding at June 30, 2015	$ 8.50
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 June 30, 2015	140,608
Aggregate proceeds if exercised	$ 984,256
Weighted Average Exercise Price, Outstanding at December 31, 2014	$ 7.00
Weighted Average Exercise Price, Outstanding at June 30, 2015	$ 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 June 30, 2015	27,103
Aggregate proceeds if exercised	$ 623,369
Weighted Average Exercise Price, Outstanding at December 31, 2014	$ 23.00
Weighted Average Exercise Price, Outstanding at June 30, 2015	$ 23.00
Warrant Liability [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at December 31, 2014	777,809
Shares, Issuances	488,485
Shares, Exercises	56,644
Shares, Balance at June 30, 2015	1,209,650
Aggregate proceeds if exercised	$ 11,975,535
Weighted Average Exercise Price, Outstanding at December 31, 2014	$ 8.00
Weighted Average Exercise Price, Issuances	11.00
Weighted Average Exercise Price, Exercises	7.00
Weighted Average Exercise Price, Outstanding at June 30, 2015	$ 9.90