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Acquisitions (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Jul. 14, 2016
Dec. 31, 2017
Business Acquisition [Line Items]    
Finite-Lived Intangible Asset, Useful Life   10 years
Business Acquisition Percentage Of Discount Rate 13.50%  
Business Combination, Consideration Transferred $ 4.2