Income Taxes (Schedule of Components of Provision for Income Taxes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Currently payable:
Federal	$ 89,507,896	$ 67,606,617	$ 73,563,685
State	5,642,926	10,180,218	3,765,929
Foreign	2,098,433	1,882,195	1,468,018
Total	97,249,255	79,669,030	78,797,632
Deferred income tax benefit:
Primarily federal	(41,694,751)	(15,419,722)	(3,066,237)
Provision for income taxes	$ 55,554,504	$ 64,249,308	$ 75,731,395