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Goodwill and Other Intangible Assets (Narratives) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Goodwill And Other Intangible Assets Disclosure [Abstract]    
Amortization of intangible assets $ 5,384 $ 1,553
Estimated Amortization Expense Next Twelve Months 5,700  
Estimated Amortization Expense Year 2 5,600  
Estimated Amortization Expense Year 3 5,600  
Estimated Amortization Expense Year 4 5,600  
Estimated Amortization Expense Year 5 $ 5,400