Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 5)

v3.8.0.1
Stockholders' Equity (Details 5) - Common Stock Warrants [Member] - $ / shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Outstanding at beginning 1,991,293 845,257
Issued 7,134,200 1,208,845
Exercised (8,207) (15,625)
Terminated (168,208) (47,184)
Outstanding at ending 8,949,078 1,991,293
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Outstanding at beginning $ 13.00 [1] $ 25.67 [2]
Issued 2.20 6.23
Exercised 2.00 5.00
Terminated 17.64 14.77
Outstanding at ending $ 4.12 [3] $ 13.00 [1]
[1] The weighted-average exercise price reflects exercise price adjustments triggered by the 2016 Purchase Agreement and the 2016 PIPE.
[2] The weighted-average exercise price reflects exercise price adjustments triggered by the 2015 PIPE.
[3] The weighted-average exercise price reflects exercise price adjustments triggered by the 2017 PIPE.