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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Income Tax Contingency [Line Items]    
Gross liability for unrecognized tax benefits, exclusive of interest and penalties $ 16,207 $ 15,356
Unrecognized tax benefits that would affect effective tax rate 16,133 15,194
Interest and penalties on unrecognized benefits 2,200 $ 1,962
Settlement and Lapse of Statute    
Income Tax Contingency [Line Items]    
Unrecognized tax benefits within the next twelve months $ 4,950