Investments in Servicing Related Assets, Geographic Concentration (Details)	Dec. 31, 2023	Dec. 31, 2022
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	100.00%	100.00%
California [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	13.70%	13.50%
Virginia [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	8.30%	8.30%
New York [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	8.30%	8.20%
Maryland [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	6.40%	6.30%
Texas [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	5.90%	6.00%
Florida [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	5.40%	5.50%
North Carolina [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	5.00%	5.10%
All Other [Member]
Servicing Related Assets, Geographic Concentration [Abstract]
Outstanding unpaid principal balance	47.00%	47.10%