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Mortgage Revenue Bonds - Schedule of MRBs Acquisitions (Details) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2022 USD ($) Unit | Dec. 31, 2022 USD ($) Unit | Dec. 31, 2021 USD ($) Unit
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Initial Principal Funded | $ |  |  | $ 103,447,000 | $ 60,282,000
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-1 [Member] | CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  | April |
Units |  |  | 200 |
Maturity Date |  |  | Mar. 31, 2040 |
Interest Rate |  |  | 6.00% |
Initial Principal Funded | $ |  |  | $ 9,000,000 |
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-2 [Member] | CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  | April |
Units |  |  | 200 |
Maturity Date |  |  | Mar. 31, 2040 |
Interest Rate |  |  | 6.00% |
Initial Principal Funded | $ |  |  | $ 7,500,000 |
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-3 [Member] | CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [1] |  | April |
Units | [1] |  | 200 |
Maturity Date | [1] |  | Mar. 31, 2040 |
Interest Rate | [1] |  | 6.00% |
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-4 [Member] | CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [1] |  | April |
Units | [1] |  | 200 |
Maturity Date | [1] |  | Mar. 31, 2040 |
Residency at the Entrepreneur [Member] | MRB and Taxable MRB Commitments [Member] | Series J-4 [Member] | CA [Member] | SOFR [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Interest Rate | [1],[2] |  | 3.60% |
CCBA Senior Garden Apartments [Member] | MRB and Taxable MRB Commitments [Member] | San Diego, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [3] |  | June |
Units | [3] |  | 45 |
Maturity Date | [3] |  | Jul. 01, 2037 |
Interest Rate | [3] |  | 4.50% |
Initial Principal Funded | $ | [3] |  | $ 3,807,000 |
Park at Sondrio [Member] | MRB and Taxable MRB Commitments [Member] | Series 2022A [Member] | Greenville, SC [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  | December |
Units |  |  | 271 |
Maturity Date |  |  | Jan. 01, 2030 |
Interest Rate |  |  | 6.50% |
Initial Principal Funded | $ |  |  | $ 38,100,000 |
Park at Vietti [Member] | MRB and Taxable MRB Commitments [Member] | Series 2022A [Member] | Spartanburg, SC [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  | December |
Units |  |  | 204 |
Maturity Date |  |  | Jan. 01, 2030 |
Interest Rate |  |  | 6.50% |
Initial Principal Funded | $ |  |  | $ 26,985,000 |
Residency at Empire [Member] | MRB and Taxable MRB Commitments [Member] | Series BB-1 [Member] | Burbank, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  | December |
Units |  |  | 148 |
Maturity Date |  |  | Dec. 01, 2040 |
Interest Rate | [4] |  | 6.45% |
Initial Principal Funded | $ |  |  | $ 14,000,000 |
Residency at Empire [Member] | MRB and Taxable MRB Commitments [Member] | Series BB-2 [Member] | Burbank, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  | December |
Units |  |  | 148 |
Maturity Date |  |  | Dec. 01, 2040 |
Interest Rate | [4] |  | 6.45% |
Initial Principal Funded | $ |  |  | $ 4,000,000 |
Residency at Empire [Member] | MRB and Taxable MRB Commitments [Member] | Series BB-3 [Member] | Burbank, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [5] |  | December |
Units | [5] |  | 148 |
Maturity Date | [5] |  | Dec. 01, 2040 |
Interest Rate | [4],[5] |  | 6.45% |
Initial Principal Funded | $ | [5] |  | $ 55,000 |
Residency at Empire [Member] | MRB and Taxable MRB Commitments [Member] | Series BB-4 [Member] | Burbank, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [5] |  | December |
Units | [5] |  | 148 |
Maturity Date | [5] |  | Dec. 01, 2040 |
Interest Rate | [5],[6] |  | 6.45% |
Jackson Manor Apartments [Member] | Jackson, MS [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [7] |  |  | April
Units | [7] |  |  | 60
Maturity Date | [7] |  |  | May 01, 2038
Interest Rate | [7] |  |  | 5.00%
Initial Principal Funded | $ | [7] |  |  | $ 4,150,000
Residency at the Mayer [Member] | Series A [Member] | Hollywood, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [8] |  |  | October
Units | [8] |  |  | 79
Maturity Date | [8] |  |  | Apr. 01, 2039
Initial Principal Funded | $ | [8] |  |  | $ 24,000,000
Residency at the Mayer [Member] | Series A [Member] | Hollywood, CA [Member] | SOFR [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Interest Rate | [8],[9] |  |  | 3.60%
Meadow Valley [Member] | Garfield Charter Township, MI [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [10] |  |  | December
Units | [10] |  |  | 154
Maturity Date | [10] |  |  | Dec. 01, 2029
Interest Rate | [10] |  |  | 6.25%
Initial Principal Funded | $ | [10] |  |  | $ 100,000
Lutheran Gardens [Member] | Compton, CA [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  |  |  | December
Units |  |  |  | 76
Maturity Date |  |  |  | Feb. 01, 2025
Interest Rate |  |  |  | 4.90%
Initial Principal Funded | $ |  |  |  | $ 10,352,000
Live 929 Apartments [Member] | Series B [Member] | Baltimore, MD [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired | [11] |  |  | December
Units | [11] |  |  | 575
Maturity Date | [11] |  |  | Jul. 01, 2039
Interest Rate | [11],[12] |  |  | 1.60%
Initial Principal Funded | $ | [11] |  |  | $ 21,680,000
Live 929 Apartments [Member] | Series 2022A [Member] | Baltimore, MD [Member] |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |
Month Acquired |  | January |  |
Units |  | 575 |  |
Maturity Date |  | Jan. 01, 2060 |  |
Interest Rate |  | 4.30% |  |
Initial Principal Funded | $ |  | $ 66,365,000 |  |
[1] | The Partnership has committed to provide funding for the Series J-3 and Series J-4 MRBs of $26.1 million and $16.4 million, respectively. See Note 18.
[2] | The interest rate is subject to an all-in floor of 3.87%. Upon stabilization, the Series J-4 MRB will become subordinate to the Series J-1, J-2 and J-3 MRBs and will convert to a fixed rate of 8.0%. Upon stabilization of the property, the MRB will be partially repaid and the maximum balance of the MRB after stabilization will not exceed $1.5 million.
[3] | The investment was previously reported as a bond purchase commitment that has converted to an MRB.
[4] | In December 2029, the interest rate will reset to the greater of (i) 3.25% over the then 10-Year SOFR Swap rate, or (ii) 6.00%.
[5] | The Partnership has committed to provide additional funding during construction for the Series BB-3 and Series BB-4 MRBs of $13.9 million and $47.0 million, respectively. See Note 18.
[6] | Upon stabilization, the MRB will resize to an amount not to exceed $3.3 million and become subordinate to the other senior MRBs of the borrower. In December 2029, the interest rate will convert to a fixed rate of 10.0%.
[7] | The Partnership has committed to provide total funding of the MRB up to $6.9 million during the acquisition and rehabilitation phase of the property on a drawdown basis. Upon stabilization of the property, the MRB will be partially repaid and the maximum balance of the MRB after stabilization will not exceed $4.8 million.
[8] | The Partnership committed to provide total funding of the MRB up to $29.5 million during the acquisition and rehabilitation phase of the property on a drawdown basis. Upon stabilization of the property, the MRB will be partially repaid and the maximum balance of the MRB after stabilization will not exceed $18.1 million.
[9] | The index is subject to a floor of 0.25%.
[10] | The Partnership committed to provide total funding of the MRB up to $44.0 million during construction on a draw-down basis.
[11] | The Partnership purchased the MRB at a discount to outstanding principal of $4.3 million. The purchase price of the bond was $17.3 million.
[12] | The MRB has a variable interest rate equal to 69.5% of the sum of LIBOR plus 1.80% multiplied by a margin equal to one minus the maximum U.S. Federal corporate tax rate divided by 0.65.

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