Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income taxes currently payable	$ 50,369	$ 65,012	$ 29,354
Deferred income taxes	10,937	(122)	34,911
Provision for income taxes	$ 61,306	$ 64,890	$ 64,265