Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 72,655,995	$ 76,660,548	$ 232,589,023	$ 276,617,836
Other comprehensive (loss) income before tax:
Foreign currency translation adjustments	17,751,603	(349,165)	13,723,857	(238,378)
Unrealized losses on debt securities, net	(4,442,743)	(816,801)	(15,652,081)	(4,230,473)
Other comprehensive income (loss), before tax	13,308,860	(1,165,966)	(1,928,224)	(4,468,851)
Income tax impact related to components of other comprehensive (loss) income	(932,976)	(171,528)	(3,286,937)	(888,399)
Other comprehensive income (loss), net of tax	14,241,836	(994,438)	1,358,713	(3,580,452)
Comprehensive income	$ 86,897,831	$ 75,666,110	$ 233,947,736	$ 273,037,384