Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Future Amortization Expense) (Details)

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Goodwill and Intangible Assets (Future Amortization Expense) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Future amortization expense of the intangible assets    
2019 $ 48,334  
2020 44,380  
2021 35,744  
2022 33,266  
2023 24,920  
Thereafter 118,597  
Net Carrying Amount $ 305,241 $ 222,731