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Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Goodwill [Abstract]      
Goodwill $ 5,520 $ 319 $ 0
Goodwill, Acquired During Period 5,231 299  
Goodwill, Translation and Purchase Accounting Adjustments $ (30) $ 20