XML 110 R96.htm IDEA: XBRL DOCUMENT v3.19.1

Other Investments - Servicing Advance Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Investment [Line Items]
Total Servicer Advance Receivables	$ 281,762	$ 286,778
Residential Loans
Investment [Line Items]
Principal and interest advances	122,339	144,336
Escrow advances (taxes and insurance advances)	105,776	94,828
Corporate advances	$ 53,647	$ 47,614

X

- Definition

Line items represent reporting 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

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

+ Details

Name:	invest_InvestmentLineItems
Namespace Prefix:	invest_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Servicing Assets At Fair Value, Corporate Advances

+ References

No definition available.

+ Details

Name:	rwt_ServicingAssetsAtFairValueCorporateAdvances
Namespace Prefix:	rwt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Servicing Assets At Fair Value, Escrow Advances

+ References

No definition available.

+ Details

Name:	rwt_ServicingAssetsAtFairValueEscrowAdvances
Namespace Prefix:	rwt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Servicing Assets At Fair Value, Principal And Interest Advances

+ References

No definition available.

+ Details

Name:	rwt_ServicingAssetsAtFairValuePrincipalAndInterestAdvances
Namespace Prefix:	rwt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

+ Details

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

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=rwt_ServicerAdvanceFinancingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: