Fair Value of Financial Instruments - Summary of Activity Related to Level 3 Assets and Liabilities (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($)
|
3 Months Ended |
6 Months Ended |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Assets at Fair Value, beginning balance |
$ 941,404,806
|
$ 1,056,980,128
|
$ 1,054,390,610
|
$ 1,053,154,881
|
| Total gains (losses) (realized/unrealized) [Abstract] |
|
|
|
|
| Total gain (losses) included in earnings (interest income and interest expense) |
(725)
|
(273,819)
|
(44,370)
|
(255,072)
|
| Total gain (losses) Included in earnings (provision for credit losses) |
$ (39,418)
|
$ (8,707,000)
|
$ 2,047,440
|
$ (8,707,000)
|
| Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |
Interest Income (Expense), Operating
|
Interest Income (Expense), Operating
|
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
|
Interest Income (Expense), Operating
|
| Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration] |
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
|
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
|
|
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax
|
| Total gain (losses) included in other comprehensive (loss) income |
$ 3,223,968
|
$ (807,707)
|
$ (5,171,006)
|
$ (6,442,766)
|
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances |
32,466,214
|
23,511,764
|
40,917,538
|
45,012,807
|
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions |
(1,819,652)
|
(29,664,371)
|
(6,518,227)
|
(41,723,855)
|
| Principal redeemed via deed in lieu of foreclosure |
|
|
(117,006,934)
|
|
| Allowance for credit loss written off upon deed in lieu of foreclosure |
39,418
|
|
6,659,560
|
|
| Assets at Fair Value, ending balance |
975,274,611
|
1,041,038,995
|
975,274,611
|
1,041,038,995
|
| Total amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets or liabilities held |
(27,895)
|
(8,786,191)
|
2,070,083
|
(8,769,224)
|
| Mortgage Revenue Bonds [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Assets at Fair Value, beginning balance |
889,692,902
|
1,022,563,964
|
1,007,904,386
|
1,026,483,796
|
| Total gains (losses) (realized/unrealized) [Abstract] |
|
|
|
|
| Total gain (losses) included in earnings (interest income and interest expense) |
12,038
|
(272,081)
|
(25,220)
|
(250,022)
|
| Total gain (losses) Included in earnings (provision for credit losses) |
(39,418)
|
(8,439,900)
|
1,970,235
|
(8,439,900)
|
| Total gain (losses) included in other comprehensive (loss) income |
2,717,808
|
(2,654,338)
|
(5,350,793)
|
(8,776,135)
|
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances |
153,714
|
22,711,764
|
305,038
|
36,812,807
|
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions |
(1,595,908)
|
(29,445,949)
|
(6,070,823)
|
(41,367,086)
|
| Principal redeemed via deed in lieu of foreclosure |
|
|
(114,221,934)
|
|
| Allowance for credit loss written off upon deed in lieu of foreclosure |
39,418
|
|
6,469,665
|
|
| Assets at Fair Value, ending balance |
890,980,554
|
1,004,463,460
|
890,980,554
|
1,004,463,460
|
| Total amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets or liabilities held |
(27,895)
|
(8,519,091)
|
1,992,878
|
(8,502,124)
|
| Bond Purchase Commitment [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Assets at Fair Value, beginning balance |
2,955,173
|
|
3,323,510
|
|
| Total gains (losses) (realized/unrealized) [Abstract] |
|
|
|
|
| Total gain (losses) included in other comprehensive (loss) income |
888,148
|
1,833,078
|
519,811
|
1,833,078
|
| Assets at Fair Value, ending balance |
3,843,321
|
1,833,078
|
3,843,321
|
1,833,078
|
| Taxable Mortgage Revenue Bonds [Member] |
|
|
|
|
| Schedule of Available-for-sale Securities [Line Items] |
|
|
|
|
| Assets at Fair Value, beginning balance |
48,756,731
|
34,416,164
|
43,162,714
|
26,671,085
|
| Total gains (losses) (realized/unrealized) [Abstract] |
|
|
|
|
| Total gain (losses) included in earnings (interest income and interest expense) |
(12,763)
|
(1,738)
|
(19,150)
|
(5,050)
|
| Total gain (losses) Included in earnings (provision for credit losses) |
0
|
(267,100)
|
77,205
|
(267,100)
|
| Total gain (losses) included in other comprehensive (loss) income |
(381,988)
|
13,553
|
(340,024)
|
500,291
|
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances |
32,312,500
|
800,000
|
40,612,500
|
8,200,000
|
| Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions |
(223,744)
|
(218,422)
|
(447,404)
|
(356,769)
|
| Principal redeemed via deed in lieu of foreclosure |
|
|
(2,785,000)
|
|
| Allowance for credit loss written off upon deed in lieu of foreclosure |
0
|
|
189,895
|
|
| Assets at Fair Value, ending balance |
80,450,736
|
34,742,457
|
80,450,736
|
34,742,457
|
| Total amount of gains (losses) for the period included in earnings attributable to the change in unrealized gains (losses) relating to assets or liabilities held |
$ 0
|
$ (267,100)
|
$ 77,205
|
$ (267,100)
|