Investments in Unconsolidated Entities Schedule of Ownership of Investments in Unconsolidated Entities (Details)	Jun. 30, 2021	Dec. 31, 2020
Longbridge Financial LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	49.70%	49.70%
LendSure Mortgage Corp [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	49.90%	49.90%
LendSure Mortgage Corp [Member] | Nonvoting Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	15.00%
Jepson Holdings Limited
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	30.10%	30.10%
Elizon TCG SBC 2017-1
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	35.80%	36.00%
Elizon DB 2015-1 LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	6.10%	8.90%
Effective Ownership Percentage	54.80%	58.20%
Other Equity Method Investments [Member] | Nonvoting Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	16.40%
Elizon NM CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	53.00%	0.00%
Effective Ownership Percentage	35.60%
Elizon CH CRE 2020-1 LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	7.80%	0.00%
Effective Ownership Percentage	51.90%
Minimum | Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	8.00%	7.40%
Maximum | Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	56.30%	56.30%