Interest (Schedule Of Capitalized Interest Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest [Abstract]
Interest capitalized beginning of period	$ 67,069	$ 53,842	$ 41,762
Interest capitalized during period	65,771	74,377	60,772
Less: capitalized interest in cost of sales	(72,002)	(61,150)	(48,692)
Interest capitalized end of period	$ 60,838	$ 67,069	$ 53,842