Income Taxes (Schedule of Components of Earnings before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ 378,460	$ 216,234	$ 189,834
Foreign	3,584	(6,753)	1,580
Total earnings before income taxes	$ 382,044	$ 209,481	$ 191,414