Mortgage Revenue Bonds - Schedule of MRBs Acquisitions (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
	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%