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Income Taxes (Details 3) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Balance at January 1, $ 180,202 $ 217,461
Increases to tax positions taken in prior years 0 10,104
Expiration of statutes of limitation (42,275) (53,169)
Translation (3,681) 5,806
Balance at December 31, $ 134,246 $ 180,202