Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Share (Details Textual)

v3.7.0.1
Net Loss per Share (Details Textual)
 6 Months Ended
Jun. 30, 2017
$ / shares
Warrant [Member] | Minimum [Member]  
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 4.50
Warrant [Member] | Maximum [Member]  
Class of Warrant or Right, Exercise Price of Warrants or Rights 7.43
Employee Stock Option [Member] | Minimum [Member]  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price 3.55
Employee Stock Option [Member] | Maximum [Member]  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price $ 4.50