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Mortgage Revenue Bonds - Schedule of Investments in MRBs (Parenthetical) (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Schedule Of Available For Sale Securities [Line Items]
Remaining partnership commitment fund amount	$ 90,527,759
Investment, Type [Extensible Enumeration]	Mortgage Revenue Bonds [Member]	Mortgage Revenue Bonds [Member]
Meadow Valley [Member]
Schedule Of Available For Sale Securities [Line Items]
Remaining partnership commitment fund amount	$ 1,500,000	$ 2,900,000

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