Amount of contractual principal due at origination of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Residential Whole-Loans and Bridge Loans - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	May 31, 2019 USD ($)	Mar. 31, 2020 USD ($) loan	Jun. 30, 2019 loan	Dec. 31, 2019 USD ($) loan
Variable Interest Entity [Line Items]
Repurchase agreements, net		$ 1,553,715		$ 2,824,801
Residential Whole Loans
Variable Interest Entity [Line Items]
Number of Loans \| loan		3,543		3,529
Fair value		$ 1,309,795		$ 1,375,860
Principal Balance		$ 1,352,778		1,325,443
Residential Whole Loans \| Variable interest entity, primary beneficiary, aggregated disclosure
Variable Interest Entity [Line Items]
Number of Loans \| loan		9
Residential Whole Loans \| VIE
Variable Interest Entity [Line Items]
Repurchase agreements, net		$ 285,400		$ 209,900
Number of Loans \| loan		3,534
No of Loans \| loan		13		12
Mortgage loans on real estate, principal amount of delinquent loans		$ 7,100		$ 7,100
Mortgage loans on real estate, number of loans, nonperforming, percentage		0.50%		0.50%
Mortgage loans on real estate weighted average loan to value, collateral dependent		62.30%		62.10%
Residential Whole Loans \| RCR Trust
Variable Interest Entity [Line Items]
Repurchase agreements, net		$ 155,500		$ 164,300
Residential Whole Loans \| RNR Trust
Variable Interest Entity [Line Items]
Repurchase agreements, net		23,300		8,100
Residential Whole Loans \| Arroyo Trust
Variable Interest Entity [Line Items]
Repurchase agreements, net		919,000
Residential Whole Loans \| RBR Trust
Variable Interest Entity [Line Items]
Repurchase agreements, net		$ 91,400		91,700
Non-QM \| VIE
Variable Interest Entity [Line Items]
No of Loans \| loan		265
Residential Bridge Loans \| Variable interest entity, primary beneficiary, aggregated disclosure
Variable Interest Entity [Line Items]
Number of Loans \| loan		51
Residential Bridge Loans \| VIE
Variable Interest Entity [Line Items]
Repurchase agreements, net		$ 26,500		$ 32,100
Number of Loans \| loan		56		76
No of Loans \| loan		1
Mortgage loans on real estate, principal amount of delinquent loans		$ 124
Mortgage loans on real estate, number of loans, nonperforming, percentage		30.10%	32.60%
Principal Balance		$ 29,650		$ 37,196
Investment in mortgage loans on real estate, principal amount at fair value of delinquent loan				12,100
Mortgage loans on real estate weighted average loan to value, collateral dependent		70.90%	72.10%
Foreclosed other real estate owned		$ 2,900
Estimated Fair Value \| Residential Whole Loans \| VIE
Variable Interest Entity [Line Items]
Fair value		$ 6,600		6,700
Estimated Fair Value \| Residential Bridge Loans \| VIE
Variable Interest Entity [Line Items]
No of Loans \| loan		20	27
Mortgage loans on real estate, principal amount of delinquent loans		$ 8,800
Fair value		$ 8,000		$ 11,400
Non-Qualifying Adjustable Rate Mortgage Loan \| Residential Whole Loans
Variable Interest Entity [Line Items]
Number of Loans \| loan		2,963
Conforming Fixed Rate Mortgage Loan \| Residential Whole Loans
Variable Interest Entity [Line Items]
Number of Loans \| loan		571
Investor Fixed Rate Mortgage Loan \| Residential Whole Loans
Variable Interest Entity [Line Items]
Number of Loans \| loan		9
Arroyo Trust \| Residential Whole Loans \| Arroyo Trust
Variable Interest Entity [Line Items]
Transfered of non-qm residential whole loans	$ 945,500