XML 116 R92.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Derivative Financial Instruments - Aggregate Fair Value and Notional Amount of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Derivative [Line Items] |  |
Fair Value | $ (27,857) | $ (41,914)
Notional Amount | 6,392,016 | 3,663,084
Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (54,109) | (58,331)
Notional Amount | 2,877,936 | 1,675,617
Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 26,252 | 16,417
Notional Amount | 3,514,080 | 1,987,467
Interest rate swaps | Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (4,172) | (1,328)
Notional Amount | 532,500 | 206,000
Interest rate swaps | Cash Flow Hedging | Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (39,810) | (46,845)
Notional Amount |  | 139,500
Interest rate swaps | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 294 | 0
Notional Amount | 50,000 | 0
TBAs | Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (5,466) | (9,506)
Notional Amount | 1,290,500 | 1,110,000
TBAs | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 7,625 | 6,654
Notional Amount | 1,246,400 | 1,074,000
Futures | Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (260) | (372)
Notional Amount |  | 90,000
Futures | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 0 | 0
Notional Amount | 0 | 0
Swaptions | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 8,726 | 7,006
Notional Amount | 1,185,000 | 575,000
Credit Default Index Swaps | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 3,792 | 1,597
Notional Amount | 100,000 | 50,000
Loan Purchase Commitments | Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (4,401) | (41)
Notional Amount | 861,436 | 27,324
Loan Purchase Commitments | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 5,006 | 1,160
Notional Amount | 777,361 | 288,467
Loan forward Sales Commitments | Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | 0 | (239)
Notional Amount | 0 | 102,793
Loan forward Sales Commitments | Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 809 | 0
Notional Amount | $ 155,319 | $ 0

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/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 + 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_FairValueByLiabilityClassAxis=us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
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_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=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_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwaptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CreditDefaultSwapMember
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_DerivativeInstrumentRiskAxis=rwt_ForwardSalesCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |