Investments in Unconsolidated Entities Schedule of Ownership of Investments in Unconsolidated Entities (Details)	Sep. 30, 2025	Dec. 31, 2024
LendSure Mortgage Corp [Member] | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	63.10%	62.80%
Elizon DB 2015-1 LLC [Member]
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	63.00%	60.60%
Elizon DB 2015-1 LLC [Member] | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	28.30%	34.50%
Elizon NM CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	74.90%	70.20%
Elizon NM CRE 2020-1 LLC | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	20.30%	20.70%
Elizon CH CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	64.00%	58.10%
Elizon CH CRE 2020-1 LLC | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	33.60%	38.40%
Jepson Holdings Limited | Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	4.10%	4.40%
Minimum | Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	21.00%	6.10%
Minimum | Loan Originator - Other
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	10.00%	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%