Investments in Unconsolidated Entities Schedule of Ownership of Investments in Unconsolidated Entities (Details)	Mar. 31, 2026	Dec. 31, 2025
LendSure Mortgage Corp [Member] \| Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	63.10%	63.10%
Elizon DB 2015-1 LLC [Member]
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	64.00%	65.10%
Elizon DB 2015-1 LLC [Member] \| Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		30.00%
Elizon NM CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	73.90%	78.10%
Elizon NM CRE 2020-1 LLC \| Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		16.80%
Elizon CH CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Effective Ownership Percentage	71.40%	68.60%
Elizon CH CRE 2020-1 LLC \| Voting ownership
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage		33.00%
Minimum \| Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	21.00%	12.50%
Minimum \| Loan Originator - Other
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	10.00%	10.00%
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	92.20%	86.10%