Fair Value of Financial Instruments - Summary of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Total Assets and Liabilities at Fair Value, net	$ 715,369,774	$ 798,246,109
Mortgage Revenue Bonds Held In Trust [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	675,905,519	750,934,848
Mortgage Revenue Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	19,163,911	42,574,996
Bond Purchase Commitment [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value		964,404
Liabilities at Fair Value	(82,911)
Taxable Mortgage Revenue Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	13,528,034	3,428,443
Derivative Financial Instruments (Reported within Other Assets) [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	6,855,221	343,418
Fair Value Inputs Level 2 [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	6,471,662
Fair Value Inputs Level 2 [Member] | Derivative Financial Instruments (Reported within Other Assets) [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	6,471,662
Fair Value, Inputs, Level 3 [Member]
Schedule of Available-for-sale Securities [Line Items]
Total Assets and Liabilities at Fair Value, net	708,898,112	798,246,109
Fair Value, Inputs, Level 3 [Member] | Mortgage Revenue Bonds Held In Trust [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	675,905,519	750,934,848
Fair Value, Inputs, Level 3 [Member] | Mortgage Revenue Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	19,163,911	42,574,996
Fair Value, Inputs, Level 3 [Member] | Bond Purchase Commitment [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value		964,404
Liabilities at Fair Value	(82,911)
Fair Value, Inputs, Level 3 [Member] | Taxable Mortgage Revenue Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	13,528,034	3,428,443
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments (Reported within Other Assets) [Member]
Schedule of Available-for-sale Securities [Line Items]
Assets at Fair Value	$ 383,559	$ 343,418