Mortgage Revenue Bonds - Schedule of Percentage of MRBs Principal Outstanding (Details)	Dec. 31, 2022	Dec. 31, 2021
TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Percentage of available for sale securities by location	37.00%	41.00%
CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Percentage of available for sale securities by location	26.00%	23.00%
SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Percentage of available for sale securities by location	17.00%	11.00%