XML 85 R69.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Non-Recurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Residential loans, at lower of cost or fair value |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value | $ 854 | $ 867
Gain (loss) on assets measured at fair value on a non-recurring basis | 22 | (17)
Residential loans, at lower of cost or fair value | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value | 0 | 0
Residential loans, at lower of cost or fair value | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value | 0 | 0
Residential loans, at lower of cost or fair value | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value | 854 | 867
REO |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
REO | 2,034 | 5,207
Gain (loss) on assets measured at fair value on a non-recurring basis | (393) | (1,831)
REO | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
REO | 0 | 0
REO | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
REO | 0 | 0
REO | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
REO | $ 2,034 | 5,207
Commercial loans, at lower of cost or fair value |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value |  | 2,700
Gain (loss) on assets measured at fair value on a non-recurring basis |  | (300)
Commercial loans, at lower of cost or fair value | Level 1 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value |  | 0
Commercial loans, at lower of cost or fair value | Level 2 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value |  | 0
Commercial loans, at lower of cost or fair value | Level 3 |  |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] |  |
Loans, at lower of cost or fair value |  | $ 2,700

X
- Definition Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items] + References No definition available. + Details
Name: | rwt_FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisLineItems
Namespace Prefix: | rwt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 + Details
Name: | us-gaap_FairValueOptionChangesInFairValueGainLoss1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of other assets. + References No definition available. + Details
Name: | us-gaap_OtherAssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rwt_ResidentialLoansAtLowerOfCostOrFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rwt_OtherRealEstateOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rwt_CommercialLoansatLowerofCostorFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |