Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details 2)

v3.8.0.1
Stockholders' Equity (Details 2) - Common Stock Warrants [Member]
3 Months Ended
Mar. 31, 2018
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Balance at beginning | shares 8,949,078
Issued | shares
Exercised | shares (103,207)
Terminated | shares (49,749)
Balance at ending | shares 8,796,122
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Exercise Price [Roll Forward]  
Balance at beginning | $ / shares $ 4.12
Issued | $ / shares
Exercised | $ / shares 4.15
Terminated | $ / shares 2.00
Balance at ending | $ / shares $ 4.15