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Mortgage Revenue Bonds - Schedule of MRBs Acquisitions (Parenthetical) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Jackson Manor Apartments [Member] | Jackson, MS [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide maximum funding of taxable MRB |  | $ 6.9
Maximum balance of the MRB after stabilization |  | 4.8
Residency at the Mayer [Member] | Hollywood, CA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide maximum funding of taxable MRB |  | 29.5
Maximum balance of the MRB after stabilization |  | 18.1
Meadow Valley [Member] | Garfield Charter Township, MI [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide maximum funding of taxable MRB |  | 44.0
Live929 Apartments [Member] | Baltimore, MD [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Discount on purchase of outstanding principal Mrb |  | 4.3
Purchase price of bond |  | $ 17.3
Loan financing variable interest rate |  | 69.50%
Variable Interest Rate |  | 1.80%
SOFR [Member] | Residency at the Mayer [Member] | Hollywood, CA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Floor rate |  | 0.25%
Mortgage Revenue Bonds [Member] | Residency at the Entrepreneur [Member] | CA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Floor rate | 3.87% |
Mortgage Revenue Bonds [Member] | Residency at the Entrepreneur [Member] | CA [Member] | Series J-3 [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide maximum funding of taxable MRB | $ 26.1 |
Mortgage Revenue Bonds [Member] | Residency at the Entrepreneur [Member] | CA [Member] | Series J-4 [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide maximum funding of taxable MRB | 16.4 |
Maximum balance of the MRB after stabilization | $ 1.5 |
Fixed interest rate | 8.00% |
Mortgage Revenue Bonds [Member] | Residency at Empire [Member] | Burbank, CA [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Mortgage loans on real estate minimum threshold interest rate over 10 year SOFR swap rate after seven years | 3.25% |
Mortgage loans on real estate minimum threshold interest rate after seven years | 6.00% |
Mortgage Revenue Bonds [Member] | Residency at Empire [Member] | Burbank, CA [Member] | Series BB-3 [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide additional funding of taxable MRB | $ 13.9 |
Mortgage Revenue Bonds [Member] | Residency at Empire [Member] | Burbank, CA [Member] | Series BB-4 [Member] |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Commitment to provide additional funding of taxable MRB | 47.0 |
Maximum balance of the MRB after stabilization | $ 3.3 |
Fixed interest rate | 10.00% |

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