Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 18,516,593	$ 12,988,384	$ 62,387,292	$ 30,245,918
Unrealized loss on securities	(22,688,696)	(4,586,145)	(90,320,354)	(18,951,770)
Unrealized gain (loss) on bond purchase commitments	(91,864)	8,708	(1,047,315)	(30,656)
Comprehensive income (loss)	$ (4,263,967)	$ 8,410,947	$ (28,980,377)	$ 11,263,492