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Goodwill and Intangible Assets - Schedule of Expected Future Amortization Expense of Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
2018 $ 442  
2019 351  
2020 280  
Total Net Carrying Amount $ 1,073 $ 1,539