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Fair Value Measurements (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Liabilities    
Contingent consideration $ 6,158 $ 4,396
Level 1    
Liabilities    
Contingent consideration 0 0
Level 2    
Liabilities    
Contingent consideration 0 0
Level 3    
Liabilities    
Contingent consideration $ 6,158 $ 4,396