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Other Intangible Assets - Schedule of Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]    
2016 $ 4,571  
2017 4,338  
2018 4,168  
2019 3,862  
2020 3,366  
Thereafter 7,258  
Intangible assets, net $ 27,563 $ 31,538