Governmental Issuer Loans - Summary of Partnership's GIL Investments (Details)		12 Months Ended
		Dec. 31, 2022 USD ($) Unit	Dec. 31, 2021 USD ($) Unit
SIFMA [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate			2.25%
Governmental Issuer Loans [Member] | TOB Trust [Member]
Governmental Issuer Loans [Line Items]
Units		2,419	1,832	[1]
Amortized Cost | $		$ 300,230,435	$ 184,767,450
Governmental Issuer Loans [Member] | Scharbauer Flats Apartments [Member] | TOB Trust [Member] | Midland, TX [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	June 2020	June 2020
Units	[1]	300	300
Maturity Date	[1],[2]	Jul. 01, 2023	Jan. 01, 2023
Current Interest Rate	[1]	6.76%	3.20%
Amortized Cost | $	[1]	$ 40,000,000	$ 40,000,000
Governmental Issuer Loans [Member] | Scharbauer Flats Apartments [Member] | TOB Trust [Member] | SIFMA [Member] | Midland, TX [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	3.10%	3.10%
Governmental Issuer Loans [Member] | Oasis at Twin Lakes [Member] | TOB Trust [Member] | Roseville, MN [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	July 2020	July 2020
Units	[1]	228	228
Maturity Date	[1],[2]	Aug. 01, 2023	Aug. 01, 2023
Current Interest Rate	[1]	5.91%	3.75%
Amortized Cost | $	[1]	$ 34,000,000	$ 34,000,000
Governmental Issuer Loans [Member] | Oasis at Twin Lakes [Member] | TOB Trust [Member] | SIFMA [Member] | Roseville, MN [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	2.25%	3.25%	[4]
Governmental Issuer Loans [Member] | Centennial Crossings [Member] | TOB Trust [Member] | Centennial, CO [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	August 2020	August 2020
Units	[1]	209	209
Maturity Date	[1],[2]	Sep. 01, 2023	Sep. 01, 2023
Current Interest Rate	[1]	6.41%	3.25%
Amortized Cost | $	[1]	$ 33,080,000	$ 33,080,000
Governmental Issuer Loans [Member] | Centennial Crossings [Member] | TOB Trust [Member] | SIFMA [Member] | Centennial, CO [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	2.75%	2.75%
Governmental Issuer Loans [Member] | Legacy Commons at Signal Hills [Member] | TOB Trust [Member] | St Paul, MN [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	January 2021	January 2021
Units	[1]	247	247
Maturity Date	[1],[2]	Feb. 01, 2024	Feb. 01, 2024
Current Interest Rate	[1]	7.37%	3.57%
Amortized Cost | $	[1]	$ 34,620,000	$ 33,120,605
Governmental Issuer Loans [Member] | Legacy Commons at Signal Hills [Member] | TOB Trust [Member] | SOFR [Member] | St Paul, MN [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	3.07%	3.07%
Governmental Issuer Loans [Member] | Hilltop at Signal Hills [Member] | TOB Trust [Member] | St Paul, MN [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	January 2021	January 2021
Units	[1]	146	146
Maturity Date	[1],[2]	Aug. 01, 2023	Aug. 01, 2023
Current Interest Rate	[1]	7.37%	3.57%
Amortized Cost | $	[1]	$ 24,450,000	$ 21,550,584
Governmental Issuer Loans [Member] | Hilltop at Signal Hills [Member] | TOB Trust [Member] | SOFR [Member] | St Paul, MN [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	3.07%	3.07%
Governmental Issuer Loans [Member] | Hope on Avalon [Member] | TOB Trust [Member]
Governmental Issuer Loans [Line Items]
Maturity Date	[5]	Feb. 01, 2023
Governmental Issuer Loans [Member] | Hope on Avalon [Member] | TOB Trust [Member] | Los Angeles, CA [Member]
Governmental Issuer Loans [Line Items]
Month Acquired		January 2021	January 2021
Units		88	88	[1]
Maturity Date	[2]	Aug. 01, 2023	Feb. 01, 2023
Current Interest Rate		7.41%	4.60%
Amortized Cost | $		$ 23,390,000	$ 9,981,200
Governmental Issuer Loans [Member] | Hope on Avalon [Member] | TOB Trust [Member] | SIFMA [Member] | Los Angeles, CA [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[3]	3.75%	3.75%
Governmental Issuer Loans [Member] | Hope on Broadway [Member] | TOB Trust [Member] | Los Angeles, CA [Member]
Governmental Issuer Loans [Line Items]
Month Acquired		January 2021	January 2021
Units		49	49	[1]
Maturity Date	[2]	Aug. 01, 2023	Feb. 01, 2023
Current Interest Rate		7.41%	4.60%
Amortized Cost | $		$ 12,105,623	$ 3,691,245
Governmental Issuer Loans [Member] | Hope on Broadway [Member] | TOB Trust [Member] | SIFMA [Member] | Los Angeles, CA [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[3]	3.75%	3.75%
Governmental Issuer Loans [Member] | Osprey Village [Member] | TOB Trust [Member] | Kissimmee, FL [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	July 2021	July 2021
Units	[1]	383	383
Maturity Date	[1],[2]	Aug. 01, 2024	Aug. 01, 2024
Current Interest Rate	[1]	6.88%	3.57%
Amortized Cost | $	[1]	$ 39,893,040	$ 6,372,030
Governmental Issuer Loans [Member] | Osprey Village [Member] | TOB Trust [Member] | SOFR [Member] | Kissimmee, FL [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	3.07%	3.07%
Governmental Issuer Loans [Member] | Willow Place Apartments [Member] | TOB Trust [Member] | McDonough, GA [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	September 2021	September 2021
Units	[1]	182	182
Maturity Date	[1],[2]	Oct. 01, 2024	Oct. 01, 2024
Current Interest Rate	[1]	7.11%	3.55%
Amortized Cost | $	[1]	$ 17,354,472	$ 2,971,786
Governmental Issuer Loans [Member] | Willow Place Apartments [Member] | TOB Trust [Member] | SOFR [Member] | McDonough, GA [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	3.30%	3.30%
Governmental Issuer Loans [Member] | Magnolia Heights [Member] | TOB Trust [Member] | Covington Georgia [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1]	June 2022
Units	[1]	200
Maturity Date	[1],[2]	Jul. 01, 2024
Current Interest Rate	[1]	7.66%
Amortized Cost | $	[1]	$ 20,400,000
Governmental Issuer Loans [Member] | Magnolia Heights [Member] | TOB Trust [Member] | SOFR [Member] | Covington Georgia [Member]
Governmental Issuer Loans [Line Items]
Variable Interest Rate	[1],[3]	3.85%
Governmental Issuer Loans [Member] | Poppy Grove I [Member] | TOB Trust [Member] | Elk Grove, CA [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1],[6]	September 2022
Units	[1],[6]	147
Maturity Date	[1],[2],[6]	Apr. 01, 2025
Variable Interest Rate	[1],[3],[6]	6.78%
Current Interest Rate	[1],[6]	6.78%
Amortized Cost | $	[1],[6]	$ 7,846,000
Governmental Issuer Loans [Member] | Poppy Grove I I [Member] | TOB Trust [Member]
Governmental Issuer Loans [Line Items]
Units	[7]	82
Maturity Date	[7]	Apr. 01, 2025
Governmental Issuer Loans [Member] | Poppy Grove I I [Member] | TOB Trust [Member] | Elk Grove, CA [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1],[6]	September 2022
Units	[1],[6]	82
Maturity Date	[1],[2],[6]	Apr. 01, 2025
Variable Interest Rate	[1],[3],[6]	6.78%
Current Interest Rate	[1],[6]	6.78%
Amortized Cost | $	[1],[6]	$ 4,541,300
Governmental Issuer Loans [Member] | Poppy Grove I I I [Member] | TOB Trust [Member]
Governmental Issuer Loans [Line Items]
Units	[7]	158
Maturity Date	[7]	Apr. 01, 2025
Governmental Issuer Loans [Member] | Poppy Grove I I I [Member] | TOB Trust [Member] | Elk Grove, CA [Member]
Governmental Issuer Loans [Line Items]
Month Acquired	[1],[6]	September 2022
Units	[1],[6]	158
Maturity Date	[1],[2],[6]	Apr. 01, 2025
Variable Interest Rate	[1],[3],[6]	6.78%
Current Interest Rate	[1],[6]	6.78%
Amortized Cost | $	[1],[6]	$ 8,550,000

[1] The Freddie Mac servicer that has forward committed to purchase the GIL at maturity is an affiliate of the Partnership (Note 22).

[2] The borrowers may elect to extend the maturity dates by six months upon meeting certain conditions, which may include payment of a non-refundable extension fee.

[3] The variable index interest rate components are typically subject to floors that range from 0% to 0.85%.

[4] The variable rate decreases to SIFMA plus 2.25% upon completion of construction.

[5] The borrower has the option to extend the maturity up to six months upon payment of a non-refundable extension fee.

[6] The Partnership has agreed to provide a subordinate GIL after the execution of Freddie Mac’s forward purchase commitment if needed by the property. The potential subordinate GIL amounts are up to $3.8 million, $2.2 million, and $4.2 million for Poppy Grove I, Poppy Grove II, and Poppy Grove III, respectively.

[7] The Partnership has committed to provide total funding for the Poppy Grove I, Poppy Grove II, and Poppy Grove III taxable GILs of $21.2 million, $10.9 million, and $24.5 million, respectively (see Note 18). The borrowers have the option to extend the maturities up to six months upon payment of non-refundable extension fees.