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Other Intangible Assets, Annual Estimated Future Amortization Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Annual Estimated Future Amortization Expense [Abstract]      
2020 $ 9,445    
2021 7,945    
2022 6,899    
2023 6,759    
2024 6,268    
Impairment Charges [Abstract]      
Indefinite life intangible assets impairment charge $ 0 $ 0 $ 0