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Fair Value of Financial Instruments - Summary of Activity Related to Level 3 Assets and Liabilities (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]    
Assets at Fair Value, beginning balance $ 816,370,069 $ 798,246,109
Total gains (losses) (realized/unrealized) [Abstract]    
Total gain (losses) included in earnings (interest income and interest expense) $ 4,691,229 $ 7,694,218
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Income (Expense), Net Interest Income (Expense), Net
Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Interest Income (Expense), Net Interest Income (Expense), Net
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
Total gain (losses) included in other comprehensive (loss) income $ 15,856,660 $ (70,292,021)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances 154,455,097 196,396,044
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions (39,039,419) (114,813,748)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other [1]   (860,533)
Assets at Fair Value, ending balance 952,333,636 816,370,069
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 (22,609) 97,662
Interest Rate Derivative Instruments [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Derivative Assets (Liabilities) at Fair Value, beginning balance 331,240 343,418
Total gains (losses) (realized/unrealized) [Abstract]    
Total gain (losses) included in earnings (interest income and interest expense) 4,410,346 5,756,111
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements and redemptions (4,741,321) (5,768,289)
Derivative Assets (Liabilities) at Fair Value, ending balance 265 331,240
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 (91,421) 40,538
Bond Purchase Commitment [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Assets at Fair Value, beginning balance 98,929 964,404
Total gains (losses) (realized/unrealized) [Abstract]    
Total gain (losses) included in other comprehensive (loss) income 98,859 (865,475)
Assets at Fair Value, ending balance 197,788 98,929
Taxable Mortgage Revenue Bonds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Assets at Fair Value, beginning balance 16,531,896 3,428,443
Total gains (losses) (realized/unrealized) [Abstract]    
Total gain (losses) included in earnings (interest income and interest expense) (24,198) (20,028)
Total gain (losses) included in other comprehensive (loss) income (1,355,710) (535,793)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances 13,319,875 13,669,857
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions (7,011,575) (10,583)
Assets at Fair Value, ending balance 21,460,288 16,531,896
Mortgage Revenue Bonds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Assets at Fair Value, beginning balance [2] 799,408,004 793,509,844
Total gains (losses) (realized/unrealized) [Abstract]    
Total gain (losses) included in earnings (interest income and interest expense) [2] 305,081 1,958,135
Total gain (losses) included in other comprehensive (loss) income [2] 17,113,511 (68,890,753)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances [2] 141,135,222 182,726,187
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions [2] (27,286,523) (109,034,876)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other [1],[2]   (860,533)
Assets at Fair Value, ending balance [2] 930,675,295 799,408,004
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 [2] $ 68,812 $ 57,124
[1] The other line is related to a re-allocation of the loan loss allowance upon restructuring of the Live 929 Apartments MRBs and property loan (Notes 6 and 8).
[2] Mortgage revenue bonds include both bonds held in trust as well as those held by the Partnership.