Annual report pursuant to Section 13 and 15(d)

Business and summary of significant accounting policies - Foreign currency translation (Details)

v3.7.0.1
Business and summary of significant accounting policies - Foreign currency translation (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Foreign currency translation losses $ (1,123,568) $ (189,687)