Annual report pursuant to Section 13 and 15(d)

Warrant liability (Details 1)

v3.7.0.1
Warrant liability (Details 1) - Warrant [Member] - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Outstanding, Warrants 500,001 500,001  
Granted, Warrants 0 0  
Outstanding, Warrants 500,001 500,001 500,001
Outstanding, Weighted Average Exercise Price $ 6.33 $ 6.33  
Granted, Weighted Average Exercise Price 0 0  
Outstanding, Weighted Average Exercise Price $ 6.33 $ 6.33 $ 6.33
Outstanding, Remaining Contractual Term in Years 3 months 18 days 1 year 3 months 18 days 2 years 3 months 18 days