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Intangible Assets (Schedule of Current and Future Amortization Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Intangible Assets, Net (Excluding Goodwill) [Abstract]        
Amortization of intangible assets $ 4,555 $ 4,928 $ 12,817 $ 14,029
Remainder of 2020 2,781   2,781  
2021 10,729   10,729  
2022 10,571   10,571  
2023 10,303   10,303  
2024 $ 9,988   $ 9,988