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Residential Loans, Net - Schedule of Geographic Concentrations of Credit Risk of Unpaid Principal Balances (Details) - Distressed residential mortgage loans held in securitization trusts, net - Geographic Concentration Risk	12 Months Ended
	Dec. 31, 2019
North Carolina
Concentration Risk [Line Items]
Geographic concentration, percent	10.50%
Florida
Concentration Risk [Line Items]
Geographic concentration, percent	10.10%
Georgia
Concentration Risk [Line Items]
Geographic concentration, percent	7.00%
South Carolina
Concentration Risk [Line Items]
Geographic concentration, percent	5.80%
Texas
Concentration Risk [Line Items]
Geographic concentration, percent	5.60%
New York
Concentration Risk [Line Items]
Geographic concentration, percent	5.50%
Ohio
Concentration Risk [Line Items]
Geographic concentration, percent	5.20%
Virginia
Concentration Risk [Line Items]
Geographic concentration, percent	5.20%

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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