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Goodwill and Intangible Assets - Schedule of Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization of intangible assets $ (231) $ 328 $ 699 $ 458