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Governmental Issuer Loans - Additional Information (Details) | 1 Months Ended |  |  |
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Nov. 30, 2023 USD ($) | Aug. 31, 2023 USD ($) | Jul. 31, 2023 USD ($) | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) Entities Property | Jan. 01, 2023 USD ($) | Dec. 31, 2022 USD ($) Property
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Allowance for credit losses |  |  |  |  |  | $ 5,900,000 |
Number of Variable Interest Entities | Property |  |  |  |  | 33 |  | 35
Scharbauer Flats Apartments [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Partnership recognized loan fee |  |  |  | $ 33,000 |  |  |
Governmental Issuer Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Accrued interest receivable |  |  |  |  | $ 1,500,000 |  | $ 3,800,000
Outstanding principal |  |  |  |  | 133,200,000 |  |
Allowance for credit losses |  |  |  |  | $ 1,300,000 |  |
Number of Variable Interest Entities | Entities |  |  |  |  | 2 |  |
Governmental Issuer Loans [Member] | Hope on Avalon [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Extension Fees Received |  |  | $ 70,000 |  |  |  |
Loan maturity date |  |  | Feb. 01, 2024 |  |  |  |
Governmental Issuer Loans [Member] | Willow Place Apartments [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
GIL commitment additional funding | $ 1,500,000 |  |  |  |  |  |
Governmental Issuer Loans [Member] | Scharbauer Flats Apartments [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Partnership recognized loan fee |  |  |  | $ 100,000 |  |  |
Loan maturity date |  |  |  | Jan. 01, 2024 |  |  |
Governmental Issuer Loans [Member] | Magnolia Heights [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Loans commitment |  |  |  |  |  |  | 20,400,000
Governmental Issuer Loans [Member] | Poppy Grove I [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Loans commitment |  |  |  |  |  |  | 35,700,000
Governmental Issuer Loans [Member] | Poppy Grove I I [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Loans commitment |  |  |  |  |  |  | 22,300,000
Governmental Issuer Loans [Member] | Poppy Grove I I I [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Loans commitment |  |  |  |  |  |  | $ 39,100,000
Governmental Issuer Loans [Member] | Sandy Creek Apartments [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Total commitment fully funded |  | $ 12,100,000 |  |  |  |  |
Property Loans [Member] |  |  |  |  |  |  |
Governmental Issuer Loans [Line Items] |  |  |  |  |  |  |
Outstanding principal |  |  |  |  | $ 73,500,000 |  |

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- Definition This is the principal amount outstanding for securitized loans only (across all types of loans). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Subparagraph (a) -Paragraph 4 -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-4 + Details
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