XML 21 R104.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Commitments and Contingencies - Additional Information (Detail) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jul. 15, 2010 Plaintiff | Sep. 30, 2015 USD ($) lease | Sep. 30, 2015 USD ($) loan lease repurchase_request | Sep. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Number of noncancelable leases | lease |  | 9 | 9 |  |
Operating lease expiration dates |  |  | 2021 |  |
Future lease commitments with expiration date |  | $ 10,927 | $ 10,927 |  |
Operating lease expense |  |  | $ 2,000 | $ 2,000 |
Risk-sharing arrangement term (years) |  |  | 10 years |  |
Special Purpose Entities (SPEs) assets |  | 36,000 | $ 36,000 |  | $ 19,000
Special Purpose Entities (SPEs) liabilities |  | 16,000 | 16,000 |  | 7,000
Residential repurchase reserve |  | 5,768 | $ 5,768 |  | 3,724
Residential repurchase requests | repurchase_request |  |  | 69 |  |
Residential repurchase, number of loans repurchased | loan |  |  | 1 |  |
Residential repurchase provisions recorded |  | 1,000 | $ 2,000 |  |
Aggregate amount of loss contingency reserves |  | 2,000 | 2,000 |  | $ 2,000
Schwab |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of other named defendants along with SRF | Plaintiff | 26 |  |  |  |
Guarantee Obligations |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Unpaid principal amount on loans |  | $ 1,800,000 | $ 1,800,000 |  |
Weighted average original Fair Isaac Corporation (FICO) score |  | 760 | 760 |  |
Weighted average original loan-to-value (LTV) |  | 76.00% | 76.00% |  |
Potential future payments on loans |  | $ 19,000 | $ 19,000 |  |
Guarantee Obligations | Financing Receivables, Equal To Greater Than 30 Days Past Due |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percent of loans in reference portfolio that are past due |  |  | 100000000.00% |  |
Guarantee Obligations | Financing Receivables, Equal to Greater than 90 Days Past Due |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percent of loans in reference portfolio that are past due |  |  | 100000000.00% |  |
Residential | Sequoia | FHLB Seattle |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Statutory interest rate per annum |  | 8.00% | 8.00% |  |
Original principal amount of securities |  | $ 133,000 | $ 133,000 |  |
Debt instrument principal payment amount |  |  | 120,000 |  |
Debt instrument interest payment amount |  |  | 11,000 |  |
Residential | Sequoia | Schwab |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Original principal amount of securities |  | 15,000 | 15,000 |  |
Principal balance of securities |  | 13,000 | 13,000 |  |
Debt instrument interest amount |  | 1,000 | 1,000 |  |
Other income |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Fee income from risk sharing agreement |  | 1,000 | 1,000 |  |
Mortgage banking and investment activities |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Market valuation changes in fair value of guarantee asset (less than for three months ending June 30, 2015) |  | $ (1,000) | $ (2,000) |  |
Minimum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percentage of losses assumed on pool of loans sold |  | 1.00% |  |  |
Maximum |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percentage of losses assumed on pool of loans sold |  | 2.25% |  |  |

X
- Definition Debt Instrument Accrued Interest + References No definition available. + Details
Name: | rwt_DebtInstrumentAccruedInterest
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument Aggregate Principal Amount + References No definition available. + Details
Name: | rwt_DebtInstrumentAggregatePrincipalAmount
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument Unpaid Interest Paid By Cash + References No definition available. + Details
Name: | rwt_DebtInstrumentUnpaidInterestPaidByCash
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fee Income, Risk Sharing Agreement + References No definition available. + Details
Name: | rwt_FeeIncomeRiskSharingAgreement
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The weighted average FICO score for borrowers at the time loans were originated. + References No definition available. + Details
Name: | rwt_FinancingReceivableCreditScoreFICOWeightedAverage
Namespace Prefix: | rwt_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Financing Receivable, Loan To Value Ratio + References No definition available. + Details
Name: | rwt_FinancingReceivableLoanToValueRatio
Namespace Prefix: | rwt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The date upon which a lease or a group of leases is set to expire. + References No definition available. + Details
Name: | rwt_LeaseExpirationYear
Namespace Prefix: | rwt_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Loss Contingency, Percentage Of Losses Assumed On Pool Of Loans Sold + References No definition available. + Details
Name: | rwt_LossContingencyPercentageOfLossesAssumedOnPoolOfLoansSold
Namespace Prefix: | rwt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Market Valuation Changes In Fair Value Of Guarantee Asset + References No definition available. + Details
Name: | rwt_MarketValuationChangesInFairValueOfGuaranteeAsset
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Mortgage Loan On Real Estate, Repurchase Reserve + References No definition available. + Details
Name: | rwt_MortgageLoanOnRealEstateRepurchaseReserve
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Mortgage Loans On Real Estate, Number Of Loans Repurchased + References No definition available. + Details
Name: | rwt_MortgageLoansOnRealEstateNumberOfLoansRepurchased
Namespace Prefix: | rwt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Mortgage Loans On Real Estate, Repurchase Provision + References No definition available. + Details
Name: | rwt_MortgageLoansOnRealEstateRepurchaseProvision
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Mortgage Loans On Real Estate, Repurchase Requests + References No definition available. + Details
Name: | rwt_MortgageLoansOnRealEstateRepurchaseRequests
Namespace Prefix: | rwt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Operating Leases, Number Of Leases, Noncancelable + References No definition available. + Details
Name: | rwt_OperatingLeasesNumberOfLeasesNoncancelable
Namespace Prefix: | rwt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage at which the plaintiff would like to collect interest on their initial investment. + References No definition available. + Details
Name: | rwt_PercentageInterestPlaintiff
Namespace Prefix: | rwt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Potential Future Payments + References No definition available. + Details
Name: | rwt_PotentialFuturePayments
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Risk-Sharing Arrangement Term + References No definition available. + Details
Name: | rwt_RiskSharingArrangementTerm
Namespace Prefix: | rwt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Special Purpose Entities, Assets + References No definition available. + Details
Name: | rwt_SpecialPurposeEntitiesAssets
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Special Purpose Entities, Liabilities + References No definition available. + Details
Name: | rwt_SpecialPurposeEntitiesLiabilities
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Percent of financing receivables past due. + References No definition available. + Details
Name: | us-gaap_FinancingReceivablePercentPastDue
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LitigationReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of defendants named in a legal action. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 3) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
Name: | us-gaap_OperatingLeasesRentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This is the principal amount outstanding for securitized loans only (across all types of loans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107314-111719 + Details
Name: | us-gaap_PrincipalAmountOutstandingOnLoansSecuritized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow to settle a bank borrowing during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 + Details
Name: | us-gaap_RepaymentsOfBankDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | rwt_LossContingenciesByNameOfPlaintiffAxis=rwt_CharlesSchwabCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_GuaranteeObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=rwt_FinancingReceivablesEqualToGreaterThan30DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=rwt_SequoiaSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | rwt_LossContingenciesByNameOfPlaintiffAxis=us-gaap_FederalHomeLoanBankOfSeattleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=rwt_MortgageBankingAndInvestmentActivitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |