Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (Loss)	$ 86,506,418	$ (2,374,033)	$ 199,957,288	$ 87,131,768
Other comprehensive income (loss) before tax:
Foreign currency translation adjustments	963,199	136,627	110,787	(555,463)
Unrealized gains (losses) on debt securities, net	1,705,281	3,022,561	(3,413,672)	5,802,291
Other comprehensive income (loss), before tax	2,668,480	3,159,188	(3,302,885)	5,246,828
Income tax impact related to components of other comprehensive income (loss)	358,109	634,738	(716,871)	1,218,481
Other comprehensive income (loss), net of tax	2,310,371	2,524,450	(2,586,014)	4,028,347
Comprehensive income	$ 88,816,789	$ 150,417	$ 197,371,274	$ 91,160,115