Annual report pursuant to Section 13 and 15(d)

Income taxes - Schedule of income (loss) before taxes from continuing operations (Details)

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Income taxes - Schedule of income (loss) before taxes from continuing operations (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Income (loss) from continuing operations before provision for income taxes    
Domestic $ (2,077,455) $ 6,128,992
Foreign (135,337) 1,220,924
Total $ (2,212,792) $ 7,349,916