Governmental Issuer Loans - Additional Information (Details)	1 Months Ended
	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) Entities Property	Jan. 01, 2023 USD ($)	Dec. 31, 2022 USD ($) Property	Sep. 30, 2022 USD ($)
Governmental Issuer Loans [Line Items]
Number of Variable Interest Entities \| Property				31		35
Allowance for credit losses					$ 5,900,000
Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Accrued interest receivable				$ 1,700,000		$ 3,800,000
Number of Variable Interest Entities \| Entities				2
Outstanding principal				$ 171,700,000
Allowance for credit losses				1,600,000
Property Loans [Member]
Governmental Issuer Loans [Line Items]
Outstanding principal				$ 68,600,000
Magnolia Heights [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Total Commitment							$ 20,400,000
Poppy Grove I [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Total Commitment							35,700,000
Poppy Grove II [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Total Commitment							22,300,000
Poppy Grove III [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Total Commitment							$ 39,100,000
Hope on Avalon [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Extension fees received		$ 70,000
Loan maturity date		Feb. 01, 2024
Scharbauer Flats Apartments [Member]
Governmental Issuer Loans [Line Items]
Partnership recognized loan fee			$ 33,000
Loan maturity date			Jan. 01, 2024
Scharbauer Flats Apartments [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Partnership recognized loan fee			$ 100,000
Loan maturity date			Jan. 01, 2024
Sandy Creek Apartments [Member] \| Governmental Issuer Loans [Member]
Governmental Issuer Loans [Line Items]
Total commitment fully funded	$ 12,100,000