Mortgage Loan on Real Estate, Accretion of Purchase Discount

No definition available.

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- Definition

Mortgage Loans On Real Estate, Deconsolidation

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No definition available.

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- Definition

Mortgage Loans on Real Estate, Additions [Abstract]

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No definition available.

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- Definition

Mortgage Loans on Real Estate, Additions, Change in Realized and Unrealized Gains and (Losses)

+ References

No definition available.

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- Definition

Mortgage Loans on Real Estate, Collections of Interest

+ References

No definition available.

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- Definition

Mortgage Loans on Real Estate, Deductions [Abstract]

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- Definition

Mortgage Loans on Real Estate, Deductions, Change in Realized and Unrealized Gains and (Losses)

+ References

No definition available.

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- Definition

Mortgage Loans on Real Estate, Provision for Loan Losses

+ References

No definition available.

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- Definition

Total carrying amount of mortgage loans as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04.(c) Schedule IV)
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Amount of decrease in mortgage loans on real estate from amortization of premium.

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- Definition

The carrying amount of the outstanding balance due under the mortgage loan.

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-Name Accounting Standards Codification
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- Definition

The amount of principal collected on mortgage loans on real estate during the reporting period.

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- Definition

The carrying amount of mortgage loans on real estate that were sold during the reporting period.

+ References

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- Definition

The amount of mortgage loans on real estate which were foreclosed on during the reporting period.

+ References

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- Definition

The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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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No definition available.

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- Definition

Total amount of new mortgage loans on real estate during the reporting period.

+ References

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- Definition

Indicates the number of mortgages under each classification.

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-SubTopic 310
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- Definition

Amount of principal due on loans that have been delinquent, which may exclude loans having interest delinquent for three months or less, as of the balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Schedule IV - Mortgage Loans on Real Estate (Details)	12 Months Ended
Schedule IV - Mortgage Loans on Real Estate (Details)	Dec. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Mortgage Loans on Real Estate [Line Items]
Carrying Value	$ 10,157,126,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	91,960,000
Reconciliation of Balance Sheet Reported Amounts of Mortgage Loans on Real Estate
Beginning balance	7,565,459,000		$ 7,792,422,000
Additions during period:
Purchases	2,987,775,000	$ 82,167,000	156,952,000
Accretion of purchase discount	19,686,000	32,688,000	39,537,000
Deconsolidation	0	0	1,483,000
Change in realized and unrealized gains (losses)	10,214,000	10,794,000	0
Deductions during period:
Repayments of principal	(175,664,000)	(175,216,000)	(130,651,000)
Collection of interest	(26,081,000)	(32,928,000)	(36,344,000)
Transfer to REO	(7,228,000)	(8,892,000)	(2,829,000)
Cost of mortgages sold	(176,470,000)	(96,344,000)	(1,241,266,000)
Provision for loan loss	1,739,000	847,000	(1,363,000)
Change in realized and unrealized gains (losses)	(270,000)	0	(59,262,000)
Amortization of premium	(42,034,000)	(40,079,000)	$ (41,083,000)
Balance at end of period	$ 10,157,126,000	$ 7,565,459,000
First mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	28
Carrying Value	$ 7,268,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 2,851,000
First mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.63%
First mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	15.00%
Multifamily \| First mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	495
Carrying Value	$ 9,657,421,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Multifamily \| First mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.04%
Multifamily \| First mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.18%
Original loan amount $0 - $99,999 \| Distressed residential mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	2,268
Carrying Value	$ 106,469,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 17,223,000
Original loan amount $0 - $99,999 \| Distressed residential mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.99%
Original loan amount $0 - $99,999 \| Distressed residential mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	14.99%
Original loan amount $0 - $99,999 \| Residential mortgage loans held in securitization trusts
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	10
Carrying Value	$ 580,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Original loan amount $0 - $99,999 \| Residential mortgage loans held in securitization trusts \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.75%
Original loan amount $0 - $99,999 \| Residential mortgage loans held in securitization trusts \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.00%
Original loan amount $0 - $99,999 \| Single Family \| First mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	35
Carrying Value	$ 1,777,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 85,000
Original loan amount $0 - $99,999 \| Single Family \| First mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.63%
Original loan amount $0 - $99,999 \| Single Family \| First mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	14.59%
Original loan amount $0 - $99,999 \| Single Family \| Second mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	652
Carrying Value	$ 32,209,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 64,000
Original loan amount $0 - $99,999 \| Single Family \| Second mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	5.88%
Original loan amount $0 - $99,999 \| Single Family \| Second mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	8.75%
Original loan amount $100,000 - $199,999 \| Distressed residential mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	1,009
Carrying Value	$ 109,442,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 20,431,000
Original loan amount $100,000 - $199,999 \| Distressed residential mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	1.75%
Original loan amount $100,000 - $199,999 \| Distressed residential mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.48%
Original loan amount $100,000 - $199,999 \| Residential mortgage loans held in securitization trusts
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	53
Carrying Value	$ 5,919,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 400,000
Original loan amount $100,000 - $199,999 \| Residential mortgage loans held in securitization trusts \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.00%
Original loan amount $100,000 - $199,999 \| Residential mortgage loans held in securitization trusts \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.63%
Original loan amount $100,000 - $199,999 \| Single Family \| First mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	74
Carrying Value	$ 8,552,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 565,000
Original loan amount $100,000 - $199,999 \| Single Family \| First mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%
Original loan amount $100,000 - $199,999 \| Single Family \| First mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	9.00%
Original loan amount $100,000 - $199,999 \| Single Family \| Second mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	90
Carrying Value	$ 12,222,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Original loan amount $100,000 - $199,999 \| Single Family \| Second mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.00%
Original loan amount $100,000 - $199,999 \| Single Family \| Second mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	9.00%
Original loan amount $200,000 - $299,999 \| Distressed residential mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	268
Carrying Value	$ 49,199,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 13,297,000
Original loan amount $200,000 - $299,999 \| Distressed residential mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	0.00%
Original loan amount $200,000 - $299,999 \| Distressed residential mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	12.04%
Original loan amount $200,000 - $299,999 \| Residential mortgage loans held in securitization trusts
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	65
Carrying Value	$ 12,246,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 2,019,000
Original loan amount $200,000 - $299,999 \| Residential mortgage loans held in securitization trusts \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.25%
Original loan amount $200,000 - $299,999 \| Residential mortgage loans held in securitization trusts \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	5.63%
Original loan amount $200,000 - $299,999 \| Single Family \| First mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	49
Carrying Value	$ 9,684,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 500,000
Original loan amount $200,000 - $299,999 \| Single Family \| First mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.00%
Original loan amount $200,000 - $299,999 \| Single Family \| First mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	9.25%
Original loan amount $200,000 - $299,999 \| Single Family \| Second mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	22
Carrying Value	$ 5,144,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Original loan amount $200,000 - $299,999 \| Single Family \| Second mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.25%
Original loan amount $200,000 - $299,999 \| Single Family \| Second mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	9.00%
Original loan amount over $299,999 \| Distressed residential mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	184
Carrying Value	$ 66,354,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 20,625,000
Original loan amount over $299,999 \| Distressed residential mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	0.75%
Original loan amount over $299,999 \| Distressed residential mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	9.40%
Original loan amount over $299,999 \| Single Family \| First mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	43
Carrying Value	$ 16,901,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Original loan amount over $299,999 \| Single Family \| First mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.13%
Original loan amount over $299,999 \| Single Family \| First mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.85%
Original loan amount over $299,999 \| Single Family \| Second mortgage loans
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	2
Carrying Value	$ 664,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Original loan amount over $299,999 \| Single Family \| Second mortgage loans \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	6.88%
Original loan amount over $299,999 \| Single Family \| Second mortgage loans \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	7.25%
Original loan amount $300,000 - $399,999 \| Residential mortgage loans held in securitization trusts
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	36
Carrying Value	$ 9,037,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 708,000
Original loan amount $300,000 - $399,999 \| Residential mortgage loans held in securitization trusts \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.50%
Original loan amount $300,000 - $399,999 \| Residential mortgage loans held in securitization trusts \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.63%
Original loan amount $400,000 - $499,999 \| Residential mortgage loans held in securitization trusts
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	26
Carrying Value	$ 8,599,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 1,244,000
Original loan amount $400,000 - $499,999 \| Residential mortgage loans held in securitization trusts \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.13%
Original loan amount $400,000 - $499,999 \| Residential mortgage loans held in securitization trusts \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.00%
Original loan amount over $499,999 \| Residential mortgage loans held in securitization trusts
Mortgage Loans on Real Estate [Line Items]
Number of Loans \| loan	50
Carrying Value	$ 37,439,000
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 11,948,000
Original loan amount over $499,999 \| Residential mortgage loans held in securitization trusts \| Minimum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	2.38%
Original loan amount over $499,999 \| Residential mortgage loans held in securitization trusts \| Maximum
Mortgage Loans on Real Estate [Line Items]
Interest Rate	4.13%