CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 428,403,272	$ 318,757,352	$ 360,797,232
Other comprehensive (loss) income before tax:
Foreign currency translation adjustments	(502,480)	(4,952,828)	151,544
Unrealized gains (losses) on available-for-sale securities, net	10,238,344	(14,072,595)	(6,424,496)
Other comprehensive income (loss), before tax	9,735,864	(19,025,423)	(6,272,952)
(Benefit) expense for income taxes related to components of other comprehensive (loss) income	2,150,052	(2,955,245)	(1,349,144)
Other comprehensive income (loss), net of tax	7,585,812	(16,070,178)	(4,923,808)
Comprehensive income	$ 435,989,084	$ 302,687,174	$ 355,873,424