Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Warrants Outstanding (Details)

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Stockholders' Equity - Schedule of Warrants Outstanding (Details)
 6 Months Ended
Jun. 30, 2018
$ / shares
shares
Warrants outstanding, Weighted-average remaining contractual life ( in years) 2 years
Warrant [Member]  
Number of warrants, outstanding 2,645,829
Warrants outstanding, Weighted-average remaining contractual life ( in years) 1 year 10 months 25 days
Number of warrants exercisable 2,645,829
Range 1 [Member] | Warrant [Member]  
Range of exercise prices, lower limit | $ / shares $ 40.00
Number of warrants, outstanding 474,518
Warrants outstanding, Weighted-average remaining contractual life ( in years) 6 months
Number of warrants exercisable 474,518
Range 2 [Member] | Warrant [Member]  
Range of exercise prices, lower limit | $ / shares $ 30.00
Range of exercise prices, upper limit | $ / shares $ 39.99
Number of warrants, outstanding 39,990
Warrants outstanding, Weighted-average remaining contractual life ( in years) 1 year 4 months 24 days
Number of warrants exercisable 39,990
Range 3 [Member] | Warrant [Member]  
Range of exercise prices, lower limit | $ / shares $ 20.00
Range of exercise prices, upper limit | $ / shares $ 29.99
Number of warrants, outstanding 77,950
Warrants outstanding, Weighted-average remaining contractual life ( in years) 1 year 7 months 6 days
Number of warrants exercisable 77,950
Range 4 [Member] | Warrant [Member]  
Range of exercise prices, lower limit | $ / shares $ 10.00
Range of exercise prices, upper limit | $ / shares $ 19.99
Number of warrants, outstanding 50,300
Warrants outstanding, Weighted-average remaining contractual life ( in years) 2 years 9 months 18 days
Number of warrants exercisable 50,300
Range 5 [Member] | Warrant [Member]  
Range of exercise prices, lower limit | $ / shares $ 0.00
Range of exercise prices, upper limit | $ / shares $ 9.99
Number of warrants, outstanding 2,003,071
Warrants outstanding, Weighted-average remaining contractual life ( in years) 7 years 2 months 12 days
Number of warrants exercisable 2,003,071