Quarterly report pursuant to Section 13 or 15(d)

Warrants (Narrative) (Details)

v3.7.0.1
Warrants (Narrative) (Details) - $ / shares
6 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Jun. 30, 2016
Dec. 31, 2015
Class of Warrant or Right [Line Items]        
Number of warrants, Outstanding 5,288,466 5,452,691 3,899,199 2,649,199
Exercise price $ 5.13 $ 4.92 $ 6.76 $ 7.97
Warrant expiration date, start Dec. 04, 2017      
Warrant expiration date, end Dec. 12, 2022      
Average remaining contractual life of warrants outstanding 4 years 1 month 6 days      
Probability of entering into a fundamental transaction 5.00%      
Maximum [Member]        
Class of Warrant or Right [Line Items]        
Exercise price $ 12.80      
Minimum [Member]        
Class of Warrant or Right [Line Items]        
Exercise price $ 3.00