XML 91 R119.htm IDEA: XBRL DOCUMENT v2.4.1.9

Segment Information - Financial Information by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Segment Reporting Information [Line Items]
Interest income	$ 63,746us-gaap_InterestAndDividendIncomeOperating		$ 55,476us-gaap_InterestAndDividendIncomeOperating
Interest expense	(23,961)us-gaap_InterestExpense		(19,060)us-gaap_InterestExpense
Net Interest Income	39,785us-gaap_InterestIncomeExpenseNet		36,416us-gaap_InterestIncomeExpenseNet
Provision for loan losses	(206)us-gaap_ProvisionForLoanLeaseAndOtherLosses		(1,284)us-gaap_ProvisionForLoanLeaseAndOtherLosses
Mortgage banking activities	1,923rwt_MortgageBankingActivitiesNet		(231)rwt_MortgageBankingActivitiesNet
MSR income (loss)	(10,924)rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs		606rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs
Other market valuation adjustments	(1,145)rwt_OtherMarketValuationAdjustmentsNet	[1]	(6,138)rwt_OtherMarketValuationAdjustmentsNet	[1]
Realized gains, net	4,306us-gaap_RealizedInvestmentGainsLosses		1,092us-gaap_RealizedInvestmentGainsLosses
Total noninterest income, net	(5,031)us-gaap_NoninterestIncome		(4,671)us-gaap_NoninterestIncome
Direct operating expenses	(25,063)us-gaap_OperatingExpenses		(19,971)us-gaap_OperatingExpenses
Other income (expense)	809us-gaap_OtherNonoperatingIncomeExpense
(Provision for) benefit from income taxes	5,316us-gaap_IncomeTaxExpenseBenefit		1,843us-gaap_IncomeTaxExpenseBenefit
Net Income	14,801us-gaap_NetIncomeLoss		12,333us-gaap_NetIncomeLoss
Non-cash amortization expense	8,762us-gaap_AdjustmentForAmortization		9,076us-gaap_AdjustmentForAmortization
Operating Segments | Residential Mortgage Banking
Segment Reporting Information [Line Items]
Interest income	15,795us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		10,668us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Interest expense	(3,778)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(1,321)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Net Interest Income	12,017us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		9,347us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Provision for loan losses	0us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		0us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Mortgage banking activities	2,215rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(1,064)rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
MSR income (loss)	0rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		0rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Other market valuation adjustments	2rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(2)rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Realized gains, net	0us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		0us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Total noninterest income, net	2,217us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(1,066)us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Direct operating expenses	(10,903)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(7,094)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Other income (expense)	0us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
(Provision for) benefit from income taxes	8us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(165)us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Net Income	3,339us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		1,022us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Non-cash amortization expense	(46)us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember		(52)us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialMortgageBankingMember
Operating Segments | Residential Investments
Segment Reporting Information [Line Items]
Interest income	30,012us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		27,594us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Interest expense	(2,810)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		(2,850)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Net Interest Income	27,202us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		24,744us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Provision for loan losses	0us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		0us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Mortgage banking activities	0rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		0rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
MSR income (loss)	(10,924)rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		606rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Other market valuation adjustments	(19)rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		(5,957)rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Realized gains, net	4,306us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		987us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Total noninterest income, net	(5,828)us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		(4,364)us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Direct operating expenses	(1,118)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		(1,095)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Other income (expense)	809us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
(Provision for) benefit from income taxes	3,510us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		1,527us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Net Income	23,766us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		20,812us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Non-cash amortization expense	9,838us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember		11,247us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_ResidentialInvestmentsMember
Operating Segments | Commercial Mortgage Banking and Investments
Segment Reporting Information [Line Items]
Interest income	10,914us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		10,384us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Interest expense	(3,489)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		(3,303)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Net Interest Income	7,425us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		7,081us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Provision for loan losses	(206)us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		(655)us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Mortgage banking activities	(292)rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		833rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
MSR income (loss)	0rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		0rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Other market valuation adjustments	0rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		0rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Realized gains, net	0us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		0us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Total noninterest income, net	(292)us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		833us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Direct operating expenses	(3,482)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		(2,626)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Other income (expense)	0us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
(Provision for) benefit from income taxes	853us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		355us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Net Income	4,298us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		4,988us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Non-cash amortization expense	(49)us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember		(173)us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = rwt_CommercialMortgageBankingAndInvestmentsMember
Corporate/Other
Segment Reporting Information [Line Items]
Interest income	7,025us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		6,830us-gaap_InterestAndDividendIncomeOperating / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Interest expense	(13,884)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(11,586)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Net Interest Income	(6,859)us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(4,756)us-gaap_InterestIncomeExpenseNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Provision for loan losses	0us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(629)us-gaap_ProvisionForLoanLeaseAndOtherLosses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Mortgage banking activities	0rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		0rwt_MortgageBankingActivitiesNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
MSR income (loss)	0rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		0rwt_MortgageServicingRightsIncomeIncludingMarketValuationChangesOfMSRs / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Other market valuation adjustments	(1,128)rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(179)rwt_OtherMarketValuationAdjustmentsNet / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Realized gains, net	0us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		105us-gaap_RealizedInvestmentGainsLosses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Total noninterest income, net	(1,128)us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(74)us-gaap_NoninterestIncome / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Direct operating expenses	(9,560)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(9,156)us-gaap_OperatingExpenses / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Other income (expense)	0us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
(Provision for) benefit from income taxes	945us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		126us-gaap_IncomeTaxExpenseBenefit / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Net Income	(16,602)us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		(14,489)us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Non-cash amortization expense	$ (981)us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember		$ (1,946)us-gaap_AdjustmentForAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
[1] For the three months ended March 31, 2015, there were no other-than-temporary impairments. For the three months ended March 31, 2014, other-than-temporary impairments were $1,671, of which $113 were recognized through the Income Statement and $1,558 were recognized in Accumulated Other Comprehensive Income.

X

- Definition

The net income attributable to mortgage banking activities. This includes market valuations related to residential and commercial loans, Sequoia IOs, and mortgage banking derivatives, as well as realized gains or losses associated with mortgage loan sales.

+ References

No definition available.

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X

- Definition

Includes income from mortgage banking servicing real estate mortgages, net of subservicing costs, and market valuation changes of MSRs held at fair value.

+ References

No definition available.

+ Details

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X

- Definition

The aggregate net change in market value for certain assets and liabilities that was included in earnings for the period. This includes changes in market values for assets and liabilities accounted for at fair value, as well as the credit portion of other-than-temporary impairments on securities available for sale, impairments on loans held-for-sale and real estate owned. This excludes valuation adjustments recorded in Mortgage Banking Activities, Net.

+ References

No definition available.

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X

- Definition

The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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X

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6515339



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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