$RWT
REDWOOD TRUST INC Stock $rwt

$rwt Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-K Financial Statement

#000093023620000007 Filed on March 02, 2020

Income Statement

Concept	2019 Q4	2018 Q4	2018 Q3
Revenue	$192.6M	$119.7M	$99.40M
YoY Change	60.85%	67.52%	58.43%
Cost Of Revenue	$147.7M	$85.00M	$64.40M
YoY Change	73.76%	135.46%	135.04%
Gross Profit	$44.90M	$34.80M	$35.00M
YoY Change	29.02%	-1.69%	-0.85%
Gross Profit Margin	23.31%	29.07%	35.21%
Selling, General & Admin	$36.40M	$15.80M	$18.00M
YoY Change	130.38%	-9.2%	3.45%
% of Gross Profit	81.07%	45.4%	51.43%
Research & Development			$1.794M
YoY Change			-3.34%
% of Gross Profit			5.13%
Depreciation & Amortization	$4.400M	$400.0K	$300.0K
YoY Change	1000.0%	33.33%	0.0%
% of Gross Profit	9.8%	1.15%	0.86%
Operating Expenses	$49.44M	$19.38M	$21.56M
YoY Change	155.16%	-4.86%	8.23%
Operating Profit	-$4.544M	$15.42M	$13.44M
YoY Change	-129.46%	2.59%	-12.61%
Interest Expense	$147.7M	$84.96M	$64.35M
YoY Change	73.85%	135.3%	134.49%
% of Operating Profit		550.91%	478.84%
Other Income/Expense, Net
YoY Change
Pretax Income	$53.50M	-$2.200M	$45.84M
YoY Change	-2531.82%	-108.49%	10.61%
Income Tax	$4.300M	-$1.300M	$4.919M
% Of Pretax Income	8.04%		10.73%
Net Earnings	$49.14M	-$913.0K	$40.92M
YoY Change	-5482.58%	-102.95%	13.1%
Net Earnings / Revenue	25.52%	-0.76%	41.17%
Basic Earnings Per Share	$0.42	-$0.02	$0.49
Diluted Earnings Per Share	$0.38	-$0.02	$0.42
COMMON SHARES
Basic Shares Outstanding	112.7M shares	82.97M shares	80.80M shares
Diluted Shares Outstanding			114.7M shares

Balance Sheet

Concept	2019 Q4	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.297B	$1.628B	$1.644B
YoY Change	-20.36%	0.43%	1.87%
Cash & Equivalents	$197.0M	$176.0M	$174.0M
Short-Term Investments	$1.100B	$1.452B	$1.470B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$430.0M	$284.0M	$259.0M
YoY Change	51.41%	19.33%	-29.62%
LONG-TERM ASSETS
Property, Plant & Equipment	$4.901M	$5.106M	$5.409M
YoY Change	-4.01%	93.04%	89.66%
Goodwill	$88.68M	$0.00
YoY Change
Intangibles	$72.79M	$0.00
YoY Change
Long-Term Investments	$1.458B	$1.891B	$1.528B
YoY Change	-22.9%	22.79%	7.68%
Other Assets	$94.00M	$29.00M	$27.00M
YoY Change	224.14%	1350.0%	3.85%
Total Long-Term Assets	$17.57B	$11.65B	$8.881B
YoY Change	50.73%	71.33%	54.11%
TOTAL ASSETS
Total Short-Term Assets	$430.0M	$284.0M	$259.0M
Total Long-Term Assets	$17.57B	$11.65B	$8.881B
Total Assets	$18.00B	$11.94B	$9.140B
YoY Change	50.75%	69.57%	49.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$5.468M	$423.0K
YoY Change	1192.67%	-68.41%
Accrued Expenses	$121.0M	$77.00M	$50.00M
YoY Change	57.14%	75.0%	28.21%
Deferred Revenue
YoY Change
Short-Term Debt	$2.329B	$2.400B	$1.424B
YoY Change	-2.96%	23.81%	15.03%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$2.455B	$2.477B	$1.477B
YoY Change	-0.89%	24.85%	14.05%
LONG-TERM LIABILITIES
Long-Term Debt	$13.47B	$7.982B	$6.178B
YoY Change	68.74%	113.42%	75.56%
Other Long-Term Liabilities	$239.0M	$120.0M	$111.0M
YoY Change	99.17%	30.43%	2.78%
Total Long-Term Liabilities	$13.71B	$8.102B	$6.289B
YoY Change	69.19%	111.43%	73.39%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.455B	$2.477B	$1.477B
Total Long-Term Liabilities	$13.71B	$8.102B	$6.289B
Total Liabilities	$16.17B	$10.59B	$7.778B
YoY Change	52.69%	81.7%	58.03%
SHAREHOLDERS EQUITY
Retained Earnings	$1.579B	$1.410B	$1.411B
YoY Change	12.0%	9.27%	12.03%
Common Stock	$2.271B	$1.812B	$1.787B
YoY Change	25.3%	8.22%	6.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.827B	$1.349B	$1.361B
YoY Change
Total Liabilities & Shareholders Equity	$18.00B	$11.94B	$9.140B
YoY Change	50.75%	69.57%	49.08%

Cashflow Statement

Concept	2019 Q4	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$49.14M	-$913.0K	$40.92M
YoY Change	-5482.58%	-102.95%	13.1%
Depreciation, Depletion And Amortization	$4.400M	$400.0K	$300.0K
YoY Change	1000.0%	33.33%	0.0%
Cash From Operating Activities	$35.70M	-$248.7M	-$688.6M
YoY Change	-114.35%	-77.06%	90.12%
INVESTING ACTIVITIES
Capital Expenditures		-$25.50M
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$110.4M	-$341.9M	-$9.400M
YoY Change	-132.29%	-696.68%	-139.0%
Cash From Investing Activities	$110.4M	-$367.4M	-$9.400M
YoY Change	-130.05%	-741.19%	-139.0%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$117.0M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-361.4M	620.4M	698.8M
YoY Change	-158.25%	-30.27%	73.53%
NET CHANGE
Cash From Operating Activities	35.70M	-248.7M	-688.6M
Cash From Investing Activities	110.4M	-367.4M	-9.400M
Cash From Financing Activities	-361.4M	620.4M	698.8M
Net Change In Cash	-215.3M	4.300M	800.0K
YoY Change	-5106.98%	-103.14%	-98.76%
FREE CASH FLOW
Cash From Operating Activities	$35.70M	-$248.7M	-$688.6M
Capital Expenditures		-$25.50M
Free Cash Flow		-$223.2M
YoY Change		-79.41%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000930236
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CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	270000000	shares
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CY2018Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
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CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	1-13759
CY2019	dei	Entity Registrant Name EntityRegistrantName	REDWOOD TRUST, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	68-0329422
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Belvedere Place, Suite 300
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Mill Valley,
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	94941
CY2019	dei	City Area Code CityAreaCode	415
CY2019	dei	Local Phone Number LocalPhoneNumber	389-7373
CY2019	dei	Security12b Title Security12bTitle	Common stock, par value $0.01 per share
CY2019	dei	Trading Symbol TradingSymbol	RWT
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
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CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	136780594	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110027770	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	101975008	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	169183000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119600000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7298000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	22864000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	19967000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	25561000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	10536000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-16894000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	8908000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1022000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-45000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-19784000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	149399000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	95649000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	153801000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1348794000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	169183000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-19784000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	442172000	USD
CY2019	rwt	Stock Issued During Period Value Dividend Reinvestment And Stock Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan	6307000	USD
CY2019	rwt	Stock Issued During Period Value Employee Stock Purchase Plans And Other Incentive Plans StockIssuedDuringPeriodValueEmployeeStockPurchasePlansAndOtherIncentivePlans	-4946000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	14957000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	129452000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1827231000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1212287000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119600000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-23951000	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	142228000	USD
CY2018	rwt	Stock Issued During Period Value Dividend Reinvestment And Stock Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan	1706000	USD
CY2018	rwt	Stock Issued During Period Value Employee Stock Purchase Plans And Other Incentive Plans StockIssuedDuringPeriodValueEmployeeStockPurchasePlansAndOtherIncentivePlans	-4466000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13736000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	15544000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	96802000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1348794000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1149428000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	140406000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	13395000	USD
CY2017	rwt	Stock Issued During Period Value Employee Stock Purchase Plans And Other Incentive Plans StockIssuedDuringPeriodValueEmployeeStockPurchasePlansAndOtherIncentivePlans	-3834000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10378000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	9187000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	88299000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1212287000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	169183000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119600000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	140406000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	5066000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	13687000	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	18250000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	10133000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1308000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1213000	USD
CY2019	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	569915000	USD
CY2018	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	0	USD
CY2017	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	0	USD
CY2019	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	5823547000	USD
CY2018	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	7162131000	USD
CY2017	us-gaap	Payments To Purchase Loans Held For Sale PaymentsToPurchaseLoansHeldForSale	5705842000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	5198089000	USD
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	5383313000	USD
CY2017	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	3903147000	USD
CY2019	us-gaap	Proceeds From Collection Of Loans Held For Sale ProceedsFromCollectionOfLoansHeldForSale	106183000	USD
CY2018	us-gaap	Proceeds From Collection Of Loans Held For Sale ProceedsFromCollectionOfLoansHeldForSale	66892000	USD
CY2017	us-gaap	Proceeds From Collection Of Loans Held For Sale ProceedsFromCollectionOfLoansHeldForSale	52956000	USD
CY2019	rwt	Payments For Proceeds From Derivative Instrument Operating Activities PaymentsForProceedsFromDerivativeInstrumentOperatingActivities	-66059000	USD
CY2018	rwt	Payments For Proceeds From Derivative Instrument Operating Activities PaymentsForProceedsFromDerivativeInstrumentOperatingActivities	51115000	USD
CY2017	rwt	Payments For Proceeds From Derivative Instrument Operating Activities PaymentsForProceedsFromDerivativeInstrumentOperatingActivities	-9950000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	14957000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	13736000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	10378000	USD
CY2019	rwt	Market Valuation Adjustments Net MarketValuationAdjustmentsNet	97006000	USD
CY2018	rwt	Market Valuation Adjustments Net MarketValuationAdjustmentsNet	24069000	USD
CY2017	rwt	Market Valuation Adjustments Net MarketValuationAdjustmentsNet	51484000	USD
CY2017	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	13355000	USD
CY2019	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	23821000	USD
CY2018	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	27041000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	41849000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	17562000	USD
CY2019	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	4502000	USD
CY2017	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	83210000	USD
CY2018	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	21080000	USD
CY2017	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	-4820000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1165577000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1611733000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1713163000	USD
CY2019	rwt	Origination Of Loans And Leases Held For Investment OriginationOfLoansAndLeasesHeldForInvestment	448189000	USD
CY2018	rwt	Origination Of Loans And Leases Held For Investment OriginationOfLoansAndLeasesHeldForInvestment	0	USD
CY2017	rwt	Origination Of Loans And Leases Held For Investment OriginationOfLoansAndLeasesHeldForInvestment	0	USD
CY2019	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	49489000	USD
CY2018	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	147523000	USD
CY2017	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	0	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	9422000	USD
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Investment ProceedsFromSaleOfLoansHeldForInvestment	0	USD
CY2019	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	1751303000	USD
CY2018	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	781063000	USD
CY2017	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	523561000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	345403000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	609568000	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	600875000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	707357000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	582331000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	228420000	USD
CY2019	rwt	Proceeds From Principal Repayments On Securities ProceedsFromPrincipalRepaymentsOnSecurities	84303000	USD
CY2018	rwt	Proceeds From Principal Repayments On Securities ProceedsFromPrincipalRepaymentsOnSecurities	84495000	USD
CY2017	rwt	Proceeds From Principal Repayments On Securities ProceedsFromPrincipalRepaymentsOnSecurities	77778000	USD
CY2019	rwt	Payments For Servicing Advance Investments PaymentsForServicingAdvanceInvestments	69610000	USD
CY2018	rwt	Payments For Servicing Advance Investments PaymentsForServicingAdvanceInvestments	395813000	USD
CY2017	rwt	Payments For Servicing Advance Investments PaymentsForServicingAdvanceInvestments	0	USD
CY2019	rwt	Repayments Of Servicing Advance Investments RepaymentsOfServicingAdvanceInvestments	203876000	USD
CY2018	rwt	Repayments Of Servicing Advance Investments RepaymentsOfServicingAdvanceInvestments	94644000	USD
CY2017	rwt	Repayments Of Servicing Advance Investments RepaymentsOfServicingAdvanceInvestments	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	3714000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	9999000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	451626000	USD
CY2017	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	0	USD
CY2019	rwt	Paymentsfor Proceedsfrom Investment In Participation Inloan Warehouse Facility PaymentsforProceedsfromInvestmentInParticipationInloanWarehouseFacility	-38209000	USD
CY2018	us-gaap	Payments To Acquire Business Two Net Of Cash Acquired PaymentsToAcquireBusinessTwoNetOfCashAcquired	0	USD
CY2017	rwt	Paymentsfor Proceedsfrom Investment In Participation Inloan Warehouse Facility PaymentsforProceedsfromInvestmentInParticipationInloanWarehouseFacility	0	USD
CY2017	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	4895889000	USD
CY2019	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	7193677000	USD
CY2018	rwt	Paymentsfor Proceedsfrom Investment In Participation Inloan Warehouse Facility PaymentsforProceedsfromInvestmentInParticipationInloanWarehouseFacility	38209000	USD
CY2018	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	6711264000	USD
CY2017	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	4036634000	USD
CY2019	rwt	Payments For Proceeds From Investment In Multifamily Loan Fund PaymentsForProceedsFromInvestmentInMultifamilyLoanFund	40467000	USD
CY2018	rwt	Payments For Proceeds From Investment In Multifamily Loan Fund PaymentsForProceedsFromInvestmentInMultifamilyLoanFund	0	USD
CY2017	rwt	Payments For Proceeds From Investment In Multifamily Loan Fund PaymentsForProceedsFromInvestmentInMultifamilyLoanFund	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	67677000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	19113000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-51494000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1025862000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12752000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	280378000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	6452566000	USD
CY2018	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	6975965000	USD
CY2019	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1397126000	USD
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1658848000	USD
CY2017	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	567100000	USD
CY2019	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1123119000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	459171000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	205163000	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	387053000	USD
CY2018	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	199000000	USD
CY2017	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	245000000	USD
CY2019	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	7023000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4977000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	7380000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	1137000	USD
CY2018	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
CY2017	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	450710000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	142601000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	302000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	16315000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8417000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5471000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4839000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4136000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	129452000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	96802000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	88299000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2105000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-291000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-137000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	225471000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1682755000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1358125000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	85756000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	58270000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-74660000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	205077000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	146807000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	221467000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	290833000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	205077000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	146807000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	452216000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	207014000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	103279000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	7963000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	10594000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	2746000	USD
CY2019Q4	us-gaap	Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds	13729000	USD
CY2018Q4	us-gaap	Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds	51911000	USD
CY2017Q4	us-gaap	Transfers Of Financial Assets Accounted For As Sale Initial Fair Value Of Assets Obtained As Proceeds TransfersOfFinancialAssetsAccountedForAsSaleInitialFairValueOfAssetsObtainedAsProceeds	79662000	USD
CY2019	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	868000	USD
CY2018	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	328000	USD
CY2017	us-gaap	Servicing Asset At Fair Value Additions ServicingAssetAtFairValueAdditions	7387000	USD
CY2019	rwt	Consolidation Of Single Family Loans Held In Securitizations Trusts ConsolidationOfSingleFamilyLoansHeldInSecuritizationsTrusts	1829281000	USD
CY2018	rwt	Consolidation Of Single Family Loans Held In Securitizations Trusts ConsolidationOfSingleFamilyLoansHeldInSecuritizationsTrusts	0	USD
CY2017	rwt	Consolidation Of Single Family Loans Held In Securitizations Trusts ConsolidationOfSingleFamilyLoansHeldInSecuritizationsTrusts	0	USD
CY2019	rwt	Consolidation Of Single Family Asset Backed Securities ConsolidationOfSingleFamilyAssetBackedSecurities	1656023000	USD
CY2018	rwt	Consolidation Of Single Family Asset Backed Securities ConsolidationOfSingleFamilyAssetBackedSecurities	0	USD
CY2017	rwt	Consolidation Of Single Family Asset Backed Securities ConsolidationOfSingleFamilyAssetBackedSecurities	0	USD
CY2019	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	1801560000	USD
CY2018	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	2062809000	USD
CY2017	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	1245430000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	22808000	USD
CY2018	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	15717000	USD
CY2017	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	98854000	USD
CY2018	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	4104000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	8609000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	0	USD
CY2017	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	4220000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	13094000	USD
CY2018	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2017	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	197000000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	94000000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	176000000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	29000000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	145000000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	2000000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	Organization<div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Redwood Trust, Inc., together with its subsidiaries, is a specialty finance company focused on making credit-sensitive investments in single-family residential and multifamily mortgages and related assets and engaging in mortgage banking activities. Our goal is to provide attractive returns to shareholders through a stable and growing stream of earnings and dividends, as well as through capital appreciation. We operate our business in </span><span style="font-family:inherit;font-size:10pt;"><span>four</span></span><span style="font-family:inherit;font-size:10pt;"> segments: Residential Lending, Business Purpose Lending, Multifamily Investments, and Third-Party Residential Investments.</span></div><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Our primary sources of income are net interest income from our investments and non-interest income from our mortgage banking activities. Net interest income consists of the interest income we earn on investments less the interest expense we incur on borrowed funds and other liabilities. Income from mortgage banking activities is generated through the origination and acquisition of loans, and their subsequent sale, securitization, or transfer to our investment portfolios. </span></div><div style="line-height:120%;padding-top:16px;text-align:justify;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Redwood Trust, Inc. has elected to be taxed as a real estate investment trust (“REIT”) under the Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), beginning with its taxable year ended December 31, 1994. We generally refer, collectively, to Redwood Trust, Inc. and those of its subsidiaries that are not subject to subsidiary-level corporate income tax as “the REIT” or “our REIT.” We generally refer to subsidiaries of Redwood Trust, Inc. that are subject to subsidiary-level corporate income tax as “our taxable REIT subsidiaries” or “TRS.” </span></div><span style="font-family:inherit;font-size:10pt;">Redwood was incorporated in the State of Maryland on April 11, 1994, and commenced operations on August 19, 1994. On March 1, 2019, Redwood completed the acquisition of 5 Arches, LLC ("5 Arches"), at which time 5 Arches became a wholly-owned subsidiary of Redwood. On October 15, 2019, Redwood acquired CoreVest American Finance Lender, LLC and certain affiliated entities ("CoreVest"), at which time CoreVest became wholly owned by Redwood. References herein to “Redwood,” the “company,” “we,” “us,” and “our” include Redwood Trust, Inc. and its consolidated subsidiaries, unless the context otherwise requires. Refer to Item 1 - </span><span style="font-family:inherit;font-size:10pt;font-style:italic;">Business</span><span style="font-family:inherit;font-size:10pt;"> in this Annual Report on Form 10-K for additional information on our business.</span>
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	4	segment
CY2018Q4	rwt	Number Of Partnerships Consolidated NumberOfPartnershipsConsolidated	2	partnership
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:10px;text-align:justify;text-indent:24px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The preparation of financial statements requires us to make a number of significant estimates. These include estimates of fair value of certain assets and liabilities, amounts and timing of credit losses, prepayment rates, and other estimates that affect the reported amounts of certain assets and liabilities as of the date of the consolidated financial statements and the reported amounts of certain revenues and expenses during the reported periods. It is likely that changes in these estimates (e.g., valuation changes due to supply and demand, credit performance, prepayments, interest rates, or other reasons) will occur in the near term. Our estimates are inherently subjective in nature and actual results could differ from our estimates and the differences could be material.</span></div>
CY2019	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	81300000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	8511000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	10091000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	72789000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	7073000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	11596000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	72789000	USD
CY2018Q4	rwt	Special Purpose Entities Liabilities SpecialPurposeEntitiesLiabilities	17000000	USD
CY2019	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P6Y
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	15925000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	15304000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	12800000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	0	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	88675000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Goodwill Goodwill	88675000	USD
CY2014	rwt	Risk Sharing Arrangement Term RiskSharingArrangementTerm	P10Y
CY2014	rwt	Risk Sharing Arrangement Term RiskSharingArrangementTerm	P10Y
CY2019Q4	rwt	Special Purpose Entities Assets SpecialPurposeEntitiesAssets	48000000	USD
CY2018Q4	rwt	Special Purpose Entities Assets SpecialPurposeEntitiesAssets	47000000	USD
CY2019Q4	rwt	Special Purpose Entities Liabilities SpecialPurposeEntitiesLiabilities	14000000	USD
CY2013	rwt	Employee Stock Purchase Plan Minimum Percentage Of Common Stock Fair Value Defined To Purchase Shares By Eligible Participants EmployeeStockPurchasePlanMinimumPercentageOfCommonStockFairValueDefinedToPurchaseSharesByEligibleParticipants	0.85
CY2019	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	1
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	700000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	600000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	500000	USD
CY2019Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	1690828000	USD
CY2019Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2019Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	1690828000	USD
CY2019Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	1548637000	USD
CY2019Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	141260000	USD
CY2019Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	931000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Gross DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedGross	1933663000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Asset DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAsset	0	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoaned	1933663000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Securities DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimSecurities	1881142000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Collateral Right To Reclaim Cash DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedCollateralRightToReclaimCash	48317000	USD
CY2018Q4	us-gaap	Derivative Liability Securities Sold Under Agreements To Resell Securities Loaned Amount Offset Against Collateral DerivativeLiabilitySecuritiesSoldUnderAgreementsToResellSecuritiesLoanedAmountOffsetAgainstCollateral	4204000	USD
CY2018Q4	rwt	Number Of Partnerships Consolidated NumberOfPartnershipsConsolidated	2	partnership
CY2019Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	11931869000	USD
CY2019Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	10717072000	USD
CY2019Q4	rwt	Number Of Variable Interest Entities Acquired And Consolidated NumberOfVariableInterestEntitiesAcquiredAndConsolidated	49	investment
CY2018Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Assets VariableInterestEntityConsolidatedCarryingAmountAssets	6331191000	USD
CY2018Q4	us-gaap	Variable Interest Entity Consolidated Carrying Amount Liabilities VariableInterestEntityConsolidatedCarryingAmountLiabilities	5709807000	USD
CY2018Q4	rwt	Number Of Variable Interest Entities Acquired And Consolidated NumberOfVariableInterestEntitiesAcquiredAndConsolidated	33	investment
CY2018	rwt	Market Valuation Adjustments Net MarketValuationAdjustmentsNet	24069000	USD
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	28484000	USD
CY2019	rwt	Market Valuation Adjustments Net MarketValuationAdjustmentsNet	97006000	USD
CY2017	rwt	Market Valuation Adjustments Net MarketValuationAdjustmentsNet	51484000	USD
CY2019	srt	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	669	loan
CY2019Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	524928000	USD
CY2019Q4	rwt	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans For Thirty To Ninety Days MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoansForThirtyToNinetyDays	1650000	USD
CY2019Q4	srt	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	747000	USD
CY2018	srt	Mortgage Loans On Real Estate Number Of Loans MortgageLoansOnRealEstateNumberOfLoans	1484	loan
CY2018Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	1034284000	USD
CY2018Q4	rwt	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans For Thirty To Ninety Days MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoansForThirtyToNinetyDays	559000	USD
CY2018Q4	srt	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	747000	USD
CY2019	rwt	Real Estate Owned Transferto Real Estate Owned Number Of Loans RealEstateOwnedTransfertoRealEstateOwnedNumberOfLoans	3	loan
CY2019Q4	us-gaap	Trading Securities TradingSecurities	860540000	USD
CY2018Q4	us-gaap	Trading Securities TradingSecurities	1118612000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	239334000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	333882000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	1099874000	USD
CY2018Q4	us-gaap	Marketable Securities MarketableSecurities	1452494000	USD
CY2019Q4	us-gaap	Trading Securities TradingSecurities	860540000	USD
CY2018Q4	us-gaap	Trading Securities TradingSecurities	1118612000	USD
CY2019	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	367000000	USD
CY2018	us-gaap	Payments To Acquire Trading Securities Heldforinvestment PaymentsToAcquireTradingSecuritiesHeldforinvestment	688000000	USD
CY2019	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	593000000	USD
CY2018	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	415000000	USD
CY2019	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	56000000	USD
CY2018	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-8000000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	239334000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	333882000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	27000000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	8000000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	110000000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	144000000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	18000000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	27000000	USD
CY2019Q4	rwt	Debt Securities Available For Sale Principal Balance DebtSecuritiesAvailableForSalePrincipalBalance	304077000	USD
CY2019Q4	rwt	Debt Securities Available For Sale Credit Reserve DebtSecuritiesAvailableForSaleCreditReserve	32940000	USD
CY2019Q4	rwt	Debt Securities Available For Sale Unamortized Discounts Premiums DebtSecuritiesAvailableForSaleUnamortizedDiscountsPremiums	124255000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	146882000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	92481000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	29000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	239334000	USD
CY2018Q4	rwt	Debt Securities Available For Sale Principal Balance DebtSecuritiesAvailableForSalePrincipalBalance	431112000	USD
CY2018Q4	rwt	Debt Securities Available For Sale Credit Reserve DebtSecuritiesAvailableForSaleCreditReserve	41370000	USD
CY2018Q4	rwt	Debt Securities Available For Sale Unamortized Discounts Premiums DebtSecuritiesAvailableForSaleUnamortizedDiscountsPremiums	151200000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	238542000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	95888000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	548000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	333882000	USD
CY2019Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	14158000	USD
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	18652000	USD
CY2017Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	21037000	USD
CY2017	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	4898000	USD
CY2019	rwt	Other Than Temporary Impairment Credit Losses Recognized In Earnings Matured Called Written Down OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsMaturedCalledWrittenDown	4417000	USD
CY2018	rwt	Other Than Temporary Impairment Credit Losses Recognized In Earnings Matured Called Written Down OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsMaturedCalledWrittenDown	1243000	USD
CY2017	rwt	Other Than Temporary Impairment Credit Losses Recognized In Earnings Matured Called Written Down OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsMaturedCalledWrittenDown	2551000	USD
CY2017	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	47000	USD
CY2019	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	77000	USD
CY2018	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	1218000	USD
CY2019Q4	rwt	Number Of Available For Sale Securities NumberOfAvailableForSaleSecurities	107	investment
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1	investment
CY2019Q4	rwt	Number Of Securities Continuous Unrealized Loss Position More Than Twelve Months NumberOfSecuritiesContinuousUnrealizedLossPositionMoreThanTwelveMonths	1	investment
CY2018Q4	rwt	Number Of Available For Sale Securities NumberOfAvailableForSaleSecurities	128	investment
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	7	investment
CY2018Q4	rwt	Number Of Securities Continuous Unrealized Loss Position More Than Twelve Months NumberOfSecuritiesContinuousUnrealizedLossPositionMoreThanTwelveMonths	3	investment
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	18652000	USD
CY2017Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	21037000	USD
CY2016Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	28261000	USD
CY2019	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	76000	USD
CY2017	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	178000	USD
CY2019	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
CY2018	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
CY2018Q4	rwt	Commitment To Fund Partnership CommitmentToFundPartnership	71000000	USD
CY2019	rwt	Availableforsale Securities Gross Realized Gain Loss On Sales And Calls AvailableforsaleSecuritiesGrossRealizedGainLossOnSalesAndCalls	23821000	USD
CY2018	rwt	Availableforsale Securities Gross Realized Gain Loss On Sales And Calls AvailableforsaleSecuritiesGrossRealizedGainLossOnSalesAndCalls	27041000	USD
CY2017	rwt	Availableforsale Securities Gross Realized Gain Loss On Sales And Calls AvailableforsaleSecuritiesGrossRealizedGainLossOnSalesAndCalls	14107000	USD
CY2019Q4	rwt	Loan Held For Investment Amount LoanHeldForInvestmentAmount	0	USD
CY2018Q4	rwt	Loan Held For Investment Amount LoanHeldForInvestmentAmount	39703000	USD
CY2019Q4	us-gaap	Other Investments OtherInvestments	358130000	USD
CY2018Q4	us-gaap	Other Investments OtherInvestments	438518000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	11000000	USD
CY2018	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	1000000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-127723000	USD
CY2019Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	13589356000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	7000000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Net DerivativeFairValueOfDerivativeNet	-49066000	USD
CY2018Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	5911385000	USD
CY2019Q4	rwt	Derivative Number Of Counterparties DerivativeNumberOfCounterparties	9	counterparty
CY2019Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	209776000	USD
CY2018Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	100773000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	43393000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	43393000	USD
CY2019Q4	us-gaap	Pledged Assets Separately Reported Other Assets Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedOtherAssetsPledgedAsCollateralAtFairValue	32945000	USD
CY2018Q4	us-gaap	Pledged Assets Separately Reported Other Assets Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedOtherAssetsPledgedAsCollateralAtFairValue	42433000	USD
CY2019Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	23330000	USD
CY2018Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	6959000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	11866000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	9462000	USD
CY2018Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	3943000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	4901000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	5106000	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	12590000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous OtherAssetsMiscellaneous	15218000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	348263000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	217825000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	11000000	USD
CY2018Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	0	USD
CY2019Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	13189000	USD
CY2018Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	14331000	USD
CY2019Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	33888000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current And Noncurrent EmployeeRelatedLiabilitiesCurrentAndNoncurrent	19769000	USD
CY2019Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	28484000	USD
CY2018Q4	us-gaap	Business Combination Contingent Consideration Liability BusinessCombinationContingentConsiderationLiability	0	USD
CY2019Q4	us-gaap	Guaranty Liabilities GuarantyLiabilities	14009000	USD
CY2018Q4	us-gaap	Guaranty Liabilities GuarantyLiabilities	16711000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	13443000	USD
CY2019Q4	rwt	Bridge Loan Holdback BridgeLoanHoldback	10682000	USD
CY2018Q4	rwt	Bridge Loan Holdback BridgeLoanHoldback	0	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	5268000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	423000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	5152000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	9022000	USD
CY2019Q4	rwt	Mortgage Loan On Real Estate Repurchase Reserve MortgageLoanOnRealEstateRepurchaseReserve	4268000	USD
CY2018Q4	rwt	Mortgage Loan On Real Estate Repurchase Reserve MortgageLoanOnRealEstateRepurchaseReserve	4189000	USD
CY2019Q4	us-gaap	Litigation Reserve LitigationReserve	2000000	USD
CY2018Q4	us-gaap	Litigation Reserve LitigationReserve	2000000	USD
CY2019Q4	rwt	Margin Payable MarginPayable	1700000	USD
CY2018Q4	rwt	Margin Payable MarginPayable	835000	USD
CY2019Q4	rwt	Other Liabilities Miscellaneous OtherLiabilitiesMiscellaneous	14155000	USD
CY2018Q4	rwt	Other Liabilities Miscellaneous OtherLiabilitiesMiscellaneous	11439000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	146238000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current And Noncurrent AccruedLiabilitiesCurrentAndNoncurrent	78719000	USD
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	9000000	USD
CY2019	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	5000000	USD
CY2019	us-gaap	Principal Investment Gains Losses PrincipalInvestmentGainsLosses	1000000	USD
CY2018	rwt	Number Of Partnerships Consolidated NumberOfPartnershipsConsolidated	2	partnership
CY2019Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	13000000	USD
CY2019	us-gaap	Net Income Loss Allocated To Limited Partners NetIncomeLossAllocatedToLimitedPartners	1000000	USD
CY2018	us-gaap	Net Income Loss Allocated To Limited Partners NetIncomeLossAllocatedToLimitedPartners	-100000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2329145000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2400279000	USD
CY2019Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	1491986000	USD
CY2018Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedAsCollateralAtFairValue	1221045000	USD
CY2019Q4	rwt	Shortterm Debt Pledgedas Collateral ShorttermDebtPledgedasCollateral	2682114000	USD
CY2018Q4	rwt	Shortterm Debt Pledgedas Collateral ShorttermDebtPledgedasCollateral	2281581000	USD
CY2019	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	1970000000	USD
CY2018	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	1510000000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	6000000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	4000000	USD
CY2019Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	201000000	USD
CY2019Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	201000000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	10000000	USD
CY2019Q4	us-gaap	Financial Instruments Owned And Pledged As Collateral At Fair Value FinancialInstrumentsOwnedAndPledgedAsCollateralAtFairValue	3000000	USD
CY2019Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	2329145000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	5678000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	16132000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2689000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3395000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2275000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1706000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1520000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1558000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	33686000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	16897000	USD
CY2019Q4	rwt	Collateral For Asset Backed Securities Issued CollateralForAssetBackedSecuritiesIssued	11711417000	USD
CY2018Q4	rwt	Collateral For Asset Backed Securities Issued CollateralForAssetBackedSecuritiesIssued	5992049000	USD
CY2019Q4	rwt	Guarantee Obligation Credit Reserve GuaranteeObligationCreditReserve	5000000	USD
CY2019Q4	rwt	Special Purpose Entities Assets SpecialPurposeEntitiesAssets	48000000	USD
CY2018Q4	rwt	Special Purpose Entities Assets SpecialPurposeEntitiesAssets	47000000	USD
CY2019Q4	rwt	Special Purpose Entities Liabilities SpecialPurposeEntitiesLiabilities	14000000	USD
CY2018Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	201000000	USD
CY2019Q4	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	201000000	USD
CY2019Q4	rwt	Lessee Number Of Leases LesseeNumberOfLeases	8	lease
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	16000000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	3000000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2000000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	13443000	USD
CY2019Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	3000000	USD
CY2019	rwt	Amortization Of Leasehold Improvement AmortizationOfLeaseholdImprovement	400000	USD
CY2018	rwt	Amortization Of Leasehold Improvement AmortizationOfLeaseholdImprovement	200000	USD
CY2017	rwt	Amortization Of Leasehold Improvement AmortizationOfLeaseholdImprovement	200000	USD
CY2019Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	16000000	USD
CY2019Q1	rwt	Operating Leases Number Of Leases Noncancelable OperatingLeasesNumberOfLeasesNoncancelable	4	lease
CY2019	rwt	Lessee Operating Lease Number Of Leases Qualified As Short Term Lease LesseeOperatingLeaseNumberOfLeasesQualifiedAsShortTermLease	1	lease
CY2019	rwt	Lessee Operating Lease Numberof New Leases LesseeOperatingLeaseNumberofNewLeases	5	lease
CY2019	rwt	Lessee Operating Lease Number Of Leases Without Implicit Interest Rate LesseeOperatingLeaseNumberOfLeasesWithoutImplicitInterestRate	0	lease
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.053
CY2018Q4	rwt	Commitment To Fund Partnership Number Of Partnerships CommitmentToFundPartnershipNumberOfPartnerships	2	partnership
CY2019Q4	us-gaap	Guaranty Liabilities GuarantyLiabilities	14000000	USD
CY2018Q4	rwt	Special Purpose Entities Liabilities SpecialPurposeEntitiesLiabilities	17000000	USD
CY2019Q4	rwt	Mortgage Loan On Real Estate Repurchase Reserve MortgageLoanOnRealEstateRepurchaseReserve	4000000	USD
CY2019	rwt	Mortgage Loans On Real Estate Repurchase Requests MortgageLoansOnRealEstateRepurchaseRequests	15	repurchase_request
CY2018	rwt	Mortgage Loans On Real Estate Repurchase Requests MortgageLoansOnRealEstateRepurchaseRequests	11	repurchase_request
CY2019	rwt	Mortgage Loans On Real Estate Number Of Loans Repurchased MortgageLoansOnRealEstateNumberOfLoansRepurchased	0	loan
CY2018	rwt	Mortgage Loans On Real Estate Number Of Loans Repurchased MortgageLoansOnRealEstateNumberOfLoansRepurchased	2	loan
CY2017	rwt	Mortgage Loans On Real Estate Number Of Loans Repurchased MortgageLoansOnRealEstateNumberOfLoansRepurchased	1	loan
CY2019	rwt	Mortgage Loans On Real Estate Repurchase Provision MortgageLoansOnRealEstateRepurchaseProvision	100000	USD
CY2018	rwt	Mortgage Loans On Real Estate Repurchase Provision MortgageLoansOnRealEstateRepurchaseProvision	700000	USD
CY2017	rwt	Mortgage Loans On Real Estate Repurchase Provision MortgageLoansOnRealEstateRepurchaseProvision	300000	USD
CY2019	rwt	Mortgage Loans On Real Estate Loans Repurchased MortgageLoansOnRealEstateLoansRepurchased	0	USD
CY2018	rwt	Mortgage Loans On Real Estate Loans Repurchased MortgageLoansOnRealEstateLoansRepurchased	0	USD
CY2017	rwt	Mortgage Loans On Real Estate Loans Repurchased MortgageLoansOnRealEstateLoansRepurchased	200000	USD
CY2019Q4	us-gaap	Litigation Reserve LitigationReserve	2000000	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	1000000	USD
CY2018	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	-100000	USD
CY2018	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Before Tax Including Portion Attributable To Noncontrolling Interest OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossBeforeTaxIncludingPortionAttributableToNoncontrollingInterest	1000000	USD
CY2019Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	11500000	shares
CY2019Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	177000000	USD
CY2019Q3	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	14375000	shares
CY2019Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	228000000	USD
CY2018	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	7187500	shares
CY2018Q4	rwt	Stock Issuance Program Shares Outstanding Value StockIssuanceProgramSharesOutstandingValue	117000000	USD
CY2019	rwt	Stock Issued During Period Value Dividend Reinvestment And Stock Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentAndStockPurchasePlan	6000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	169183000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	169183000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119600000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	140406000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	5273000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119600000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	140406000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	4797000	USD
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	3754000	USD
CY2017	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	3632000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	164386000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	115846000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	136774000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	101120744	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	78724912	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	76792957	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.63
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.47
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.78
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	4283000	USD
CY2017	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Diluted ParticipatingSecuritiesDistributedAndUndistributedEarningsLossDiluted	3836000	USD
CY2019	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	36212000	USD
CY2018	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	32653000	USD
CY2017	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	26898000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	200122000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	147970000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	163468000	USD
CY2019	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	101147225	shares
CY2018	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	78724912	shares
CY2017	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	76792957	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	251100	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	189120	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	185383	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	35382269	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	31113738	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	24996668	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	136780594	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	110027770	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	101975008	shares
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.46
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.34
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.60
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3637480	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	4616776	shares
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	25122000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	20911000	USD
CY2019	rwt	Sharebased Compensation Arrangement By Sharebased Payment Award Compensation Cost Forfeitures SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCostForfeitures	303000	USD
CY2019	rwt	Allocated Sharebased Compensation Expense Including Restructuring AllocatedSharebasedCompensationExpenseIncludingRestructuring	13402000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	32328000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y
CY2019Q4	rwt	Employee Stock Purchase Plan Number Of Shares Authorized EmployeeStockPurchasePlanNumberOfSharesAuthorized	600000	shares
CY2019	rwt	Employee Stock Purchase Plan Number Of Shares Purchased By Employee EmployeeStockPurchasePlanNumberOfSharesPurchasedByEmployee	430772	shares
CY2018Q4	us-gaap	Employee Stock Ownership Plan Esop Repurchase Obligation Amount EmployeeStockOwnershipPlanESOPRepurchaseObligationAmount	6000	USD
CY2017Q4	us-gaap	Employee Stock Ownership Plan Esop Repurchase Obligation Amount EmployeeStockOwnershipPlanESOPRepurchaseObligationAmount	4000	USD
CY2016Q4	us-gaap	Employee Stock Ownership Plan Esop Repurchase Obligation Amount EmployeeStockOwnershipPlanESOPRepurchaseObligationAmount	3000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	524000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	375000	USD
CY2017	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	305000	USD
CY2019	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	526000	USD
CY2018	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	373000	USD
CY2017	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	304000	USD
CY2019Q4	us-gaap	Employee Stock Ownership Plan Esop Repurchase Obligation Amount EmployeeStockOwnershipPlanESOPRepurchaseObligationAmount	4000	USD
CY2018Q4	us-gaap	Employee Stock Ownership Plan Esop Repurchase Obligation Amount EmployeeStockOwnershipPlanESOPRepurchaseObligationAmount	6000	USD
CY2017Q4	us-gaap	Employee Stock Ownership Plan Esop Repurchase Obligation Amount EmployeeStockOwnershipPlanESOPRepurchaseObligationAmount	4000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13402000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	12388000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10141000	USD
CY2018	us-gaap	Property Management Fee Revenue PropertyManagementFeeRevenue	0	USD
CY2019	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	2441000	USD
CY2018	us-gaap	Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain	0	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1799000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	0	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	0	USD
CY2019	us-gaap	Other Income OtherIncome	19257000	USD
CY2018	us-gaap	Other Income OtherIncome	13070000	USD
CY2017	us-gaap	Other Income OtherIncome	12436000	USD
CY2017	rwt	Mortgage Servicing Rights Income Loss Net MortgageServicingRightsIncomeLossNet	7860000	USD
CY2019	rwt	Fee Income Risk Sharing Agreement FeeIncomeRiskSharingAgreement	3522000	USD
CY2018	rwt	Fee Income Risk Sharing Agreement FeeIncomeRiskSharingAgreement	3613000	USD
CY2017	rwt	Fee Income Risk Sharing Agreement FeeIncomeRiskSharingAgreement	3194000	USD
CY2019	rwt	Fhlbc Capital Stock Dividend FHLBCCapitalStockDividend	2169000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Additional Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized	200000	shares
CY2019	rwt	Mortgage Banking Activities Net MortgageBankingActivitiesNet	87266000	USD
CY2018	rwt	Mortgage Banking Activities Net MortgageBankingActivitiesNet	59566000	USD
CY2017	rwt	Mortgage Banking Activities Net MortgageBankingActivitiesNet	53908000	USD
CY2019	rwt	Mortgage Servicing Rights Income Loss Net MortgageServicingRightsIncomeLossNet	3521000	USD
CY2018	rwt	Mortgage Servicing Rights Income Loss Net MortgageServicingRightsIncomeLossNet	7076000	USD
CY2018	rwt	Fhlbc Capital Stock Dividend FHLBCCapitalStockDividend	1763000	USD
CY2017	rwt	Fhlbc Capital Stock Dividend FHLBCCapitalStockDividend	1382000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1405000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	618000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019	us-gaap	Property Management Fee Revenue PropertyManagementFeeRevenue	4400000	USD
CY2019	rwt	Fixed Compensation Expense FixedCompensationExpense	39747000	USD
CY2018	rwt	Fixed Compensation Expense FixedCompensationExpense	24445000	USD
CY2017	rwt	Fixed Compensation Expense FixedCompensationExpense	22111000	USD
CY2019	rwt	Variable Compensation Expense VariableCompensationExpense	25069000	USD
CY2017	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	3289000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	118672000	USD
CY2018	rwt	Variable Compensation Expense VariableCompensationExpense	14589000	USD
CY2017	rwt	Variable Compensation Expense VariableCompensationExpense	20574000	USD
CY2019	rwt	Acquisition Related Sharebased Payment Arrangement Expense AcquisitionRelatedSharebasedPaymentArrangementExpense	1010000	USD
CY2018	rwt	Acquisition Related Sharebased Payment Arrangement Expense AcquisitionRelatedSharebasedPaymentArrangementExpense	0	USD
CY2017	rwt	Acquisition Related Sharebased Payment Arrangement Expense AcquisitionRelatedSharebasedPaymentArrangementExpense	0	USD
CY2019	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	10746000	USD
CY2018	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	7451000	USD
CY2017	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	7073000	USD
CY2019	rwt	Loan Acquisition Costs LoanAcquisitionCosts	7031000	USD
CY2018	rwt	Loan Acquisition Costs LoanAcquisitionCosts	7697000	USD
CY2017	rwt	Loan Acquisition Costs LoanAcquisitionCosts	5022000	USD
CY2019	rwt	Office Costs OfficeCosts	6310000	USD
CY2018	rwt	Office Costs OfficeCosts	4705000	USD
CY2017	rwt	Office Costs OfficeCosts	4248000	USD
CY2019	us-gaap	Professional Fees ProfessionalFees	5450000	USD
CY2018	us-gaap	Professional Fees ProfessionalFees	5529000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	2842000	USD
CY2019	us-gaap	Other General Expense OtherGeneralExpense	2351000	USD
CY2018	us-gaap	Other General Expense OtherGeneralExpense	1955000	USD
CY2017	us-gaap	Other General Expense OtherGeneralExpense	1856000	USD
CY2019	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	7556000	USD
CY2018	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	4023000	USD
CY2019	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	3217000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	82782000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	77156000	USD
CY2019	rwt	Amortizationof Purchase Related Intangible Assets AmortizationofPurchaseRelatedIntangibleAssets	8699000	USD
CY2018	rwt	Amortizationof Purchase Related Intangible Assets AmortizationofPurchaseRelatedIntangibleAssets	177000	USD
CY2017	rwt	Amortizationof Purchase Related Intangible Assets AmortizationofPurchaseRelatedIntangibleAssets	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	98554000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	103858000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	82000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	0	USD
CY2019Q4	rwt	Deferred Tax Assets Real Estate Assets DeferredTaxAssetsRealEstateAssets	676000	USD
CY2018Q4	rwt	Deferred Tax Assets Real Estate Assets DeferredTaxAssetsRealEstateAssets	2400000	USD
CY2018	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2017	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1106000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	19000	USD
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CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	20068000	USD
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CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	100948000	USD
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CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	873000	USD
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CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12036000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	11387000	USD
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CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1419000	USD
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CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	300000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-112000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5493000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1119000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	10879000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7440000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11088000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11752000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.052
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.042
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.085
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.077
CY2019	rwt	Prohibited Transaction Tax Rate ProhibitedTransactionTaxRate	1
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	4	segment
CY2019	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	4	segment
CY2019	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	622281000	USD
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CY2019	rwt	Mortgage Banking Activities Net MortgageBankingActivitiesNet	87266000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	35500000	USD
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CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	23821000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	165844000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	118672000	USD
CY2019	us-gaap	Other Expenses OtherExpenses	13022000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7440000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	169183000	USD
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	-3361000	USD
CY2018	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	378717000	USD
CY2018	us-gaap	Interest Expense InterestExpense	239039000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	139678000	USD
CY2018	rwt	Mortgage Banking Activities Net MortgageBankingActivitiesNet	59566000	USD
CY2018	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-25689000	USD
CY2018	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	13070000	USD
CY2018	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	27041000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	73988000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	82782000	USD
CY2018	us-gaap	Other Expenses OtherExpenses	196000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11088000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	119600000	USD
CY2018	us-gaap	Adjustment For Amortization AdjustmentForAmortization	12379000	USD
CY2017	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	248057000	USD
CY2017	us-gaap	Interest Expense InterestExpense	108816000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	139241000	USD
CY2017	rwt	Mortgage Banking Activities Net MortgageBankingActivitiesNet	53908000	USD
CY2017	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	10374000	USD
CY2017	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	12436000	USD
CY2017	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	13355000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	90073000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	77156000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11752000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	140406000	USD
CY2017	us-gaap	Adjustment For Amortization AdjustmentForAmortization	17462000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	1099874000	USD
CY2019Q4	us-gaap	Other Investments OtherInvestments	358130000	USD
CY2019Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	161464000	USD
CY2019Q4	us-gaap	Assets Assets	17995440000	USD
CY2018Q4	us-gaap	Marketable Securities MarketableSecurities	1452494000	USD
CY2018Q4	us-gaap	Other Investments OtherInvestments	438518000	USD
CY2018Q4	us-gaap	Assets Assets	11937406000	USD
CY2019Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	192581000	USD
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CY2019Q1	us-gaap	Interest Expense InterestExpense	99276000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	44873000	USD
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CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	31765000	USD
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	58052000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	30029000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	29984000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	47779000	USD
CY2019Q4	us-gaap	Operating Expenses OperatingExpenses	49444000	USD
CY2019Q3	us-gaap	Operating Expenses OperatingExpenses	29346000	USD
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CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	49143000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	34310000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	31266000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	54464000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
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CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
CY2018Q4	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	119725000	USD
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CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	82976000	USD
CY2018Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	76619000	USD
CY2018Q4	us-gaap	Interest Expense InterestExpense	84961000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	64351000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	48213000	USD
CY2018Q1	us-gaap	Interest Expense InterestExpense	41514000	USD
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	34764000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	35046000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	34763000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	35105000	USD
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	-17538000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	32327000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	19527000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	39672000	USD
CY2018Q4	us-gaap	Operating Expenses OperatingExpenses	19378000	USD
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	21561000	USD
CY2018Q2	us-gaap	Operating Expenses OperatingExpenses	19009000	USD
CY2018Q1	us-gaap	Operating Expenses OperatingExpenses	23030000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-913000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	40921000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	32747000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	46845000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.42
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CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.30
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CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.28
CY2018Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	9540598000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	5115210000	USD
CY2016Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	3890751000	USD
CY2019	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	12911261000	USD
CY2018	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	10607896000	USD
CY2017	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	5741427000	USD
CY2019	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	5218797000	USD
CY2018	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	5426304000	USD
CY2017	us-gaap	Mortgage Loans On Real Estate Cost Of Mortgages Sold MortgageLoansOnRealEstateCostOfMortgagesSold	3982683000	USD
CY2019	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	1851278000	USD
CY2018	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	843984000	USD
CY2017	srt	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	576620000	USD
CY2019	rwt	Mortgage Loanson Real Estate Transfers To Real Estate Other MortgageLoansonRealEstateTransfersToRealEstateOther	7552000	USD
CY2018	rwt	Mortgage Loanson Real Estate Transfers To Real Estate Other MortgageLoansonRealEstateTransfersToRealEstateOther	4104000	USD
CY2017	rwt	Mortgage Loanson Real Estate Transfers To Real Estate Other MortgageLoansonRealEstateTransfersToRealEstateOther	4219000	USD
CY2019	rwt	Mortgage Loanson Real Estate Unrealized Gain Loss On Change In Fair Value MortgageLoansonRealEstateUnrealizedGainLossOnChangeInFairValue	255885000	USD
CY2018	rwt	Mortgage Loanson Real Estate Unrealized Gain Loss On Change In Fair Value MortgageLoansonRealEstateUnrealizedGainLossOnChangeInFairValue	91884000	USD
CY2017	rwt	Mortgage Loanson Real Estate Unrealized Gain Loss On Change In Fair Value MortgageLoansonRealEstateUnrealizedGainLossOnChangeInFairValue	46554000	USD
CY2019Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	15630117000	USD
CY2018Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	9540598000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	5115210000	USD

Files In Submission

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$RWT
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2019 Q4 Form 10-K Financial Statement

#000093023620000007 Filed on March 02, 2020

Income Statement

Balance Sheet

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$RWT REDWOOD TRUST INC Stock $rwt

2019 Q4 Form 10-K Financial Statement

#000093023620000007 Filed on March 02, 2020

Income Statement

Balance Sheet

Cashflow Statement

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Files In Submission

$RWT
REDWOOD TRUST INC Stock $rwt