Comprehensive Income (Reclassification Out of Accumulated Other Comprehensive Income) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Provision for income taxes	$ (13,506,358)	$ (13,233,686)	$ (41,676,723)	$ (50,358,854)
Unrealized gains on available-for-sale debt securities
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Total net reclassifications for the period	(204,811)	0	(677,087)	614,324
Amounts Reclassified from Other Comprehensive Income | Unrealized gains on available-for-sale debt securities
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Realized (loss) gain on sale of securities	(259,254)	0	(857,072)	777,625
Provision for income taxes	54,443	0	179,985	(163,301)
Total net reclassifications for the period	$ (204,811)	$ 0	$ (677,087)	$ 614,324