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Basis of Presentation and Significant Accounting Policies - Schedule of Finite-Lived Intangible Assets, Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Accounting Policies [Abstract]    
2018 $ 10,698  
2019 10,111  
2020 6,920  
2021 5,503  
2022 118  
Thereafter 545  
Total $ 33,895 $ 45,083