Income Taxes (Interest And Penalties) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 17,122	$ 15,356
Interest and penalties on unrecognized benefits	2,387	1,962
Total gross uncertain tax positions	19,509	17,318
Amount included in Current liabilities	4,950	4,896
Amount included in Other long-term liabilities	$ 14,559	$ 12,422