XML 85 R73.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Commercial Loans - Summary of Classifications and Carrying Value of Commercial Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans receivable, fair value | $ 325,063 | $ 402,647
Commercial Loans, Held-for-Sale |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Residential loans, at lower of cost or fair value | 69,720 | 39,141
Loans receivable, fair value | 69,720 | 39,141
Commercial Loans at Lower of Cost or Market |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Residential loans, at lower of cost or fair value | 233,058 | 0
Commercial Loans Held-for-Investment, at Fair Value |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans receivable, fair value | 0 | 67,657
Commercial Loans Held-for-Investment, at Amortized Cost |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans receivable, fair value | $ 22,285 | $ 295,849

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_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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 loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Glossary Loan -URI http://asc.fasb.org/extlink&oid=6517073 + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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