Investments in Unconsolidated Entities Schedule of Ownership of Investments in Unconsolidated Entities (Details)	Mar. 31, 2024	Dec. 31, 2023
LendSure Mortgage Corp [Member] | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	63.70%	49.90%
LendSure Mortgage Corp [Member] | Nonvoting Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	13.80%	13.80%
Elizon DB 2015-1 LLC [Member]
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	56.00%	60.00%
Elizon DB 2015-1 LLC [Member] | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	33.50%	30.40%
Elizon NM CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	64.80%	74.10%
Elizon NM CRE 2020-1 LLC | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	32.50%	11.50%
Elizon CH CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	54.20%	52.10%
Elizon CH CRE 2020-1 LLC | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	30.60%	29.20%
Jepson Holdings Limited | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	7.90%	7.90%
Minimum | Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	6.10%	6.10%
Minimum | Loan Originator - Other
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	45.00%	45.00%
Minimum | Equity investments in securitization-related risk retention vehicles
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	24.60%	24.60%
Maximum | Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	79.00%	79.00%
Maximum | Loan Originator - Other
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%	50.00%
Maximum | Equity investments in securitization-related risk retention vehicles
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	84.50%	84.50%