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Governmental Issuer Loans - Additional Information (Details)	1 Months Ended						9 Months Ended
	Apr. 30, 2025 USD ($)	Feb. 28, 2025 USD ($)	Jan. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Feb. 29, 2024 USD ($)	Sep. 30, 2025 USD ($) Entities Property	Dec. 31, 2024 USD ($) Property
Governmental Issuer Loans [Line Items]
Number of Variable Interest Entities | Property							22	31
Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Accrued interest receivable							$ 691,000	$ 1,400,000
Number of Variable Interest Entities | Entities							2
Outstanding principal							$ 12,100,000
Property Loans [Member]
Governmental Issuer Loans [Line Items]
Outstanding principal							1,000,000
Poppy Grove GILs [Member]
Governmental Issuer Loans [Line Items]
Outstanding principal							109,800,000
Poppy Grove taxable GILs [Member]
Governmental Issuer Loans [Line Items]
Outstanding principal							$ 43,900,000
Poppy Grove I [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Borrower		$ 5,200,000
Maturity date, month and year							2025-12
Poppy Grove II [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Borrower		1,800,000
Maturity date, month and year							2026-01
Poppy Grove III [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Borrower		5,700,000
Maturity date, month and year							2026-02
Gateway and Yarbrough Predevelopment Project Taxable MRB [Member]
Governmental Issuer Loans [Line Items]
Outstanding principal							$ 800,000
Legacy Commons, Magnolia, Ospery Village, Willow Palace Apartments And Supplemental [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Partnership recognized loan fee			$ 87,000	$ 87,000	$ 51,000	$ 87,000
Legacy Commons at Signal Hills [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Maturity date, month and year							2025-08
Poppy Grove I, Poppy Grove II, And Poppy Grove III [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Partnership recognized loan fee		$ 307,000					$ 126,000
Maturity date, month and year		2025-10
Osprey Village [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Partnership recognized loan fee				$ 150,000
Construction Lending JV [Member]
Governmental Issuer Loans [Line Items]
Proceeds from sale of asset at par plus accrued interest							$ 7,500,000
Construction Lending JV [Member] | Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Proceeds from sale of asset at par plus accrued interest	$ 6,500,000

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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
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-SubTopic 20
-Topic 860
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-4

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-Topic 860
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-Name Accounting Standards Codification
-Section 55
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481395/860-30-55-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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