Income Taxes (Schedule of Components of Provision for Income Taxes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Currently payable:
Federal	$ 62,670,986	$ 89,507,896	$ 67,606,617
State	4,310,783	5,642,926	10,180,218
Foreign	1,761,732	2,098,433	1,882,195
Total	68,743,501	97,249,255	79,669,030
Deferred income tax benefit:
Primarily federal	(17,777,777)	(41,694,751)	(15,419,722)
Provision for income taxes	$ 50,965,724	$ 55,554,504	$ 64,249,308