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Goodwill and Intangible Assets (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2017
USD ($)
Segment
Dec. 31, 2016
USD ($)
Goodwill and Intangible Assets [Abstract]    
Number of operating segments | Segment 2  
Goodwill | $ $ 5,612 $ 5,612