Property, Plant, and Equipment, Net (Schedule of Property, Plant, and Equipment, Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Depreciation	$ 60,900	$ 59,800	$ 58,200
Tangible Asset Impairment Charges	$ 5,000	$ 400	$ 2,100