Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 6,992,854	$ 2,981,757
Reversal of net unrealized loss on securities to provision for credit loss		372,169
Unrealized loss on bond purchase commitments	(120,970)
Comprehensive income (loss)	(9,426,913)	(5,112,614)
Accumulated Other Comprehensive Income (Loss) [Member]
Reversal of net unrealized gains on sale of securities		(1,408,804)
Reversal of net unrealized loss on securities to provision for credit loss		372,169
Unrealized loss on securities	(16,298,797)	$ (7,057,736)
Unrealized loss on bond purchase commitments	(120,970)
Commitments [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Unrealized loss on bond purchase commitments	$ (120,970)