Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 17,606,681	$ 10,264,680	$ 43,870,699	$ 17,257,534
Unrealized gain (loss) on securities	(19,880,002)	1,933,172	(67,631,658)	(14,365,625)
Unrealized gain (loss) on bond purchase commitments	(136,370)	81,606	(955,451)	(39,364)
Comprehensive income (loss)	$ (2,409,691)	$ 12,279,458	$ (24,716,410)	$ 2,852,545