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Goodwill and Other Intangible Assets - Schedule of Estimated Future Amortization Expense Relating to Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]    
2018 $ 8,441  
2019 6,132  
2020 4,532  
2021 4,082  
2022 4,125  
Thereafter 7,897  
Finite lived intangible assets, net carrying value $ 35,209 $ 46,034