XML 97 R80.htm IDEA: XBRL DOCUMENT v3.10.0.1

Derivative Financial Instruments - Aggregate Fair Value and Notional Amount of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivative [Line Items]
Fair Value	$ 9,716	$ (47,363)
Notional Amount	7,630,759	6,644,081
TBAs
Derivative [Line Items]
Notional Amount	2,720,000	1,700,000
Futures
Derivative [Line Items]
Notional Amount	15,000	8,000
Derivative Liabilities
Derivative [Line Items]
Fair Value	(55,929)	(63,081)
Notional Amount	3,264,639	3,485,466
Derivative Liabilities | Interest rate swaps
Derivative [Line Items]
Fair Value	(13,129)	(11,888)
Notional Amount	820,000	1,248,000
Derivative Liabilities | Interest rate swaps | Cash Flow Hedging
Derivative [Line Items]
Fair Value	(31,601)	(43,679)
Notional Amount	139,500	139,500
Derivative Liabilities | TBAs
Derivative [Line Items]
Fair Value	(6,372)	(3,808)
Notional Amount	1,485,000	1,400,000
Derivative Liabilities | Futures
Derivative [Line Items]
Fair Value	(126)	0
Notional Amount	15,000	0
Derivative Liabilities | Loan purchase commitments
Derivative [Line Items]
Fair Value	(4,701)	(3,706)
Notional Amount	805,139	697,966
Derivative Assets
Derivative [Line Items]
Fair Value	65,645	15,718
Notional Amount	4,366,120	3,158,615
Derivative Assets | Interest rate swaps
Derivative [Line Items]
Fair Value	59,468	10,122
Notional Amount	2,675,500	1,765,000
Derivative Assets | TBAs
Derivative [Line Items]
Fair Value	3,186	133
Notional Amount	1,230,000	295,000
Derivative Assets | Futures
Derivative [Line Items]
Fair Value	0	1
Notional Amount	0	7,500
Derivative Assets | Swaptions
Derivative [Line Items]
Fair Value	0	42
Notional Amount	0	200,000
Derivative Assets | Loan purchase commitments
Derivative [Line Items]
Fair Value	2,991	3,243
Notional Amount	460,620	547,434
Derivative Assets | Loan forward sale commitments
Derivative [Line Items]
Fair Value	0	2,177
Notional Amount	$ 0	$ 343,681

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rwt_ToBeAnnouncedContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_FutureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByLiabilityClassAxis=us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_LoanPurchaseCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_DerivativeFinancialInstrumentsAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwaptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=rwt_ForwardSalesCommitmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: