Goodwill and Intangible Assets (Goodwill) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Business Combination - Goodwill    
Balance at beginning of the period $ 231  
Current period acquisitions 2,780 $ 231
Foreign currency translation adjustment (251)  
Balance at end of the period $ 2,760 $ 231