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Goodwill and Intangible Assets - Schedule of Expected Amortization of Intangible Assets (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]  
2018 $ 3,296
2019 2,587
2020 1,345
2021 1,274
2022 and thereafter 132
Net carrying amount $ 8,634