Warrants (Number of Warrants, Exercise Price, Aggregate Proceeds of Warrants if Exercised) (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at December 31, 2015	1,209,649
Shares, Issuances	6,568,830
Shares, Expiration	(27,103)
Shares, Balance at December 31, 2016	7,751,376
Aggregate proceeds if exercised | $	$ 17,723,727
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares	$ 8.19
Weighted Average Exercise Price, Issuances | $ / shares	$ 1.28
Weighted Average Exercise Price, Expiration	23.00
Weighted Average Exercise Price, Outstanding at December 31, 2016 | $ / shares	$ 2.29
Range 0.75 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issuances	5,335,000
Shares, Balance at December 31, 2016	5,335,000
Aggregate proceeds if exercised | $	$ 4,001,250
Weighted Average Exercise Price, Issuances | $ / shares	$ 0.75
Weighted Average Exercise Price, Outstanding at December 31, 2016 | $ / shares	$ 0.75
Range 2.25 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Issuances	1,063,830
Shares, Balance at December 31, 2016	1,063,830
Aggregate proceeds if exercised | $	$ 2,393,618
Weighted Average Exercise Price, Issuances | $ / shares	$ 2.25
Weighted Average Exercise Price, Outstanding at December 31, 2016 | $ / shares	$ 2.25
Range 4.05 - 8.25 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at December 31, 2015	694,062
Shares, Balance at December 31, 2016	694,062
Aggregate proceeds if exercised | $	$ 4,039,441
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares	$ 5.82
Weighted Average Exercise Price, Outstanding at December 31, 2016 | $ / shares	$ 5.82
Range 10.75 - 23.00 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Balance at December 31, 2015	515,587
Shares, Issuances	170,000
Shares, Expiration	(27,103)
Shares, Balance at December 31, 2016	658,484
Aggregate proceeds if exercised | $	$ 7,289,418
Weighted Average Exercise Price, Outstanding at December 31, 2015 | $ / shares	$ 11.39
Weighted Average Exercise Price, Issuances | $ / shares	$ 12.00
Weighted Average Exercise Price, Expiration	23.00
Weighted Average Exercise Price, Outstanding at December 31, 2016 | $ / shares	$ 11.07