Income Taxes (Interest And Penalties) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Gross liability for unrecognized tax benefits, exclusive of interest and penalties	$ 16,207	$ 15,356
Interest and penalties on unrecognized benefits	2,200	1,962
Total gross uncertain tax positions	18,407	17,318
Amount included in Current liabilities	4,950	4,896
Amount included in Other long-term liabilities	$ 13,457	$ 12,422