$MFA
MFA FINANCIAL, INC. Stock $mfa

$mfa Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000105516020000033 Filed on November 05, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q3
Revenue	$60.48M	$82.64M	$142.7M
YoY Change	-60.5%	-42.1%	21.54%
Cost Of Revenue	$41.00M	$56.00M	$85.80M
YoY Change	-50.3%	-34.73%	45.67%
Gross Profit	$50.90M	$87.40M	$119.3M
YoY Change	-59.67%	-26.74%	11.6%
Gross Profit Margin	84.17%	105.77%	83.59%
Selling, General & Admin	$8.900M	$18.30M	$12.90M
YoY Change	-29.92%	41.86%	17.27%
% of Gross Profit	17.49%	20.94%	10.81%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization			$900.0K
YoY Change			50.0%
% of Gross Profit			0.75%
Operating Expenses	$5.000M	$0.00	$23.80M
YoY Change	-80.31%	-100.0%	20.2%
Operating Profit	$45.90M	$87.40M	$95.50M
YoY Change	-54.46%	-8.48%	9.64%
Interest Expense	$41.04M	$55.96M	$85.82M
YoY Change	-50.23%	-34.79%	45.76%
% of Operating Profit	89.42%	64.03%	89.87%
Other Income/Expense, Net
YoY Change
Pretax Income	$45.80M	$87.20M	$95.60M
YoY Change	-54.47%	-8.79%	9.76%
Income Tax
% Of Pretax Income
Net Earnings	$45.82M	$87.21M	$95.60M
YoY Change	-54.47%	-8.78%	9.72%
Net Earnings / Revenue	75.76%	105.54%	66.98%
Basic Earnings Per Share	$0.08	$0.17	$0.20
Diluted Earnings Per Share	$0.08	$0.17	$0.20
COMMON SHARES
Basic Shares Outstanding	453.3M shares	453.3M shares	451.0M shares
Diluted Shares Outstanding		493.5M shares	479.9M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$814.0M	$884.0M	$154.0M
YoY Change	1046.48%	474.03%	48.08%
Cash & Equivalents	$814.4M	$884.2M	$154.2M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$814.0M	$884.0M	$154.0M
YoY Change	1046.48%	474.03%	48.08%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill	$0.00		$7.200M
YoY Change			0.15%
Intangibles	$0.00
YoY Change
Long-Term Investments	$5.812B	$6.128B	$12.18B
YoY Change	-54.06%	-49.67%	8.09%
Other Assets	$7.000M	$5.000M	$39.00M
YoY Change	-89.06%	-87.18%	550.0%
Total Long-Term Assets	$6.118B	$6.599B	$12.95B
YoY Change	-54.67%	-49.04%	10.9%
TOTAL ASSETS
Total Short-Term Assets	$814.0M	$884.0M	$154.0M
Total Long-Term Assets	$6.118B	$6.599B	$12.95B
Total Assets	$6.932B	$7.483B	$13.10B
YoY Change	-48.91%	-42.9%	11.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$37.00M	$44.00M	$54.00M
YoY Change	-40.32%	-18.52%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$8.571B
YoY Change		-100.0%	17.77%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$71.00M	$67.00M	$8.716B
YoY Change	-53.59%	-99.23%	19.76%
LONG-TERM LIABILITIES
Long-Term Debt	$4.337B	$4.851B	$986.0M
YoY Change	-56.77%	391.99%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$4.337B	$4.851B	$986.0M
YoY Change	-56.77%	391.99%	3.68%
TOTAL LIABILITIES
Total Short-Term Liabilities	$71.00M	$67.00M	$8.716B
Total Long-Term Liabilities	$4.337B	$4.851B	$986.0M
Total Liabilities	$4.407B	$4.918B	$9.701B
YoY Change	-56.72%	-49.31%	17.88%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.405B	-$1.409B	-$637.2M
YoY Change	122.7%	121.12%	6.38%
Common Stock	$4.517M	$4.533M	$4.517M
YoY Change	-0.15%	0.35%	0.49%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.525B	$2.566B	$3.403B
YoY Change
Total Liabilities & Shareholders Equity	$6.932B	$7.483B	$13.10B
YoY Change	-48.91%	-42.9%	11.23%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	$45.82M	$87.21M	$95.60M
YoY Change	-54.47%	-8.78%	9.72%
Depreciation, Depletion And Amortization			$900.0K
YoY Change			50.0%
Cash From Operating Activities	$21.60M	-$39.80M	$67.70M
YoY Change	-65.27%	-158.79%	45.59%
INVESTING ACTIVITIES
Capital Expenditures	-$3.500M	-$1.400M	-$400.0K
YoY Change	600.0%	250.0%	0.0%
Acquisitions
YoY Change
Other Investing Activities	$521.0M	$462.0M	$174.3M
YoY Change	-191.42%	165.06%	-109.28%
Cash From Investing Activities	$517.5M	$460.6M	$174.1M
YoY Change	-190.73%	164.56%	-109.26%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-607.1M	-205.0M	-168.2M
YoY Change	-235.0%	21.88%	-108.92%
NET CHANGE
Cash From Operating Activities	21.60M	-39.80M	67.70M
Cash From Investing Activities	517.5M	460.6M	174.1M
Cash From Financing Activities	-607.1M	-205.0M	-168.2M
Net Change In Cash	-68.00M	215.8M	73.60M
YoY Change	16.24%	193.21%	40.19%
FREE CASH FLOW
Cash From Operating Activities	$21.60M	-$39.80M	$67.70M
Capital Expenditures	-$3.500M	-$1.400M	-$400.0K
Free Cash Flow	$25.10M	-$38.40M	$68.10M
YoY Change	-59.97%	-156.39%	45.2%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001055160
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-13991
	dei	Entity Registrant Name EntityRegistrantName	MFA FINANCIAL, INC.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-3974868
	dei	Entity Address Address Line1 EntityAddressAddressLine1	350 Park Avenue, 20th Floor
	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10022
	dei	City Area Code CityAreaCode	212
	dei	Local Phone Number LocalPhoneNumber	207-6400
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	18656000	USD
	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	15601000	USD
CY2020Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	8992000	USD
CY2019Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	10439000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	28609000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	30225000	USD
CY2020Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	USD
CY2019Q3	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	USD
	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	44434000	USD
	us-gaap	Restructuring Settlement And Impairment Provisions RestructuringSettlementAndImpairmentProvisions	0	USD
CY2020Q3	us-gaap	Costs And Expenses CostsAndExpenses	27260000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	23381000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	120833000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	70141000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	87210000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	95599000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-725207000	USD
	us-gaap	Net Income Loss NetIncomeLoss	277496000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8219000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	21578000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	11250000	USD
CY2020Q3	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	78991000	USD
CY2019Q3	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	91849000	USD
	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	-746785000	USD
	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	266246000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.65
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	87210000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	95599000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-725207000	USD
	us-gaap	Net Income Loss NetIncomeLoss	277496000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	15082000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	5483000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	408585000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	50085000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	60000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	14499000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	389127000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	36370000	USD
CY2020Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	0	USD
CY2019Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	-344269000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Including Portion Attributable To Noncontrolling Interest Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxIncludingPortionAttributableToNoncontrollingInterestAvailableforsaleSecurities	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-233000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-50127000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-30384000	USD
CY2020Q3	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	22652000	USD
CY2019Q3	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	0	USD
	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	22652000	USD
	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	0	USD
CY2020Q3	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	7176000	USD
CY2019Q3	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-685000	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	72802000	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-1769000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-454000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9934000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-324788000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-18438000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	86756000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85665000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-1049995000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	259058000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	7176000	USD
CY2020Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8219000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	21578000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	11250000	USD
CY2020Q3	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	78537000	USD
CY2019Q3	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	81915000	USD
	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	-1071573000	USD
	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	247808000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	3383952000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-908995000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	687000	USD
CY2020Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2652000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1266000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	1059000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-243812000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-48533000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	2440675000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	96578000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	37000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1709000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-96021000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	64032000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	14041000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Warrant Issued AdjustmentsToAdditionalPaidInCapitalWarrantIssued	14041000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	2521051000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	87210000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2266000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-81000	USD
CY2020Q3	us-gaap	Dividends Common Stock DividendsCommonStock	22667000	USD
CY2020Q3	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	92000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	15022000	USD
CY2020Q3	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	22652000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2565656000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	3416101000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	88857000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	551000	USD
CY2019Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2610000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	992000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	435000	USD
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	90097000	USD
CY2019Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
CY2019Q1	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	256000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	5094000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-10786000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	3404531000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	93040000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	586000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2438000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-260000	USD
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	90124000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
CY2019Q2	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	276000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	17637000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-20449000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	3403373000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	95599000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	7724000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1288000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-260000	USD
CY2019Q3	us-gaap	Dividends Common Stock DividendsCommonStock	90338000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
CY2019Q3	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	276000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-9016000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-918000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	3403426000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-725207000	USD
	us-gaap	Net Income Loss NetIncomeLoss	277496000	USD
	mfa	Residential Whole Loans Gain Loss ResidentialWholeLoansGainLoss	-280142000	USD
	mfa	Residential Whole Loans Gain Loss ResidentialWholeLoansGainLoss	61125000	USD
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	71569000	USD
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	58005000	USD
	mfa	Impairmentand Other Losses On Securities Availablefor Sale And Other Assets ImpairmentandOtherLossesOnSecuritiesAvailableforSaleAndOtherAssets	424966000	USD
	mfa	Impairmentand Other Losses On Securities Availablefor Sale And Other Assets ImpairmentandOtherLossesOnSecuritiesAvailableforSaleAndOtherAssets	0	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-57034000	USD
	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	0	USD
	mfa	Accretionof Purchase Discounts AccretionofPurchaseDiscounts	27585000	USD
	mfa	Accretionof Purchase Discounts AccretionofPurchaseDiscounts	45990000	USD
	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	40952000	USD
	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	32085000	USD
	mfa	Provisionfor Creditand Valuation Losseson Residential Whole Loans And Other Financial Instruments At Carrying Value ProvisionforCreditandValuationLossesonResidentialWholeLoansAndOtherFinancialInstrumentsAtCarryingValue	38090000	USD
	mfa	Provisionfor Creditand Valuation Losseson Residential Whole Loans And Other Financial Instruments At Carrying Value ProvisionforCreditandValuationLossesonResidentialWholeLoansAndOtherFinancialInstrumentsAtCarryingValue	0	USD
	mfa	Unrealized Losses Gainson Securities Held At Fair Valueand Swaps Not Designatedas Hedges UnrealizedLossesGainsonSecuritiesHeldAtFairValueandSwapsNotDesignatedasHedges	-16388000	USD
	mfa	Unrealized Losses Gainson Securities Held At Fair Valueand Swaps Not Designatedas Hedges UnrealizedLossesGainsonSecuritiesHeldAtFairValueandSwapsNotDesignatedasHedges	-22026000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-459000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	24647000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-16919000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	11756000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	16751000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	153596000	USD
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	1345422000	USD
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	2988229000	USD
	mfa	Proceeds From Saleof Residential Whole Loans ProceedsFromSaleofResidentialWholeLoans	1521060000	USD
	mfa	Proceeds From Saleof Residential Whole Loans ProceedsFromSaleofResidentialWholeLoans	0	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	1261319000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	906072000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	609758000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	1555449000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	3790148000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	735768000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	163748000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	837591000	USD
	mfa	Proceeds From Real Estate Owned ProceedsFromRealEstateOwned	203603000	USD
	mfa	Proceeds From Real Estate Owned ProceedsFromRealEstateOwned	81206000	USD
	mfa	Purchaseof Real Estate Ownedand Capital Improvements PurchaseofRealEstateOwnedandCapitalImprovements	9334000	USD
	mfa	Purchaseof Real Estate Ownedand Capital Improvements PurchaseofRealEstateOwnedandCapitalImprovements	15671000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1425000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1351000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	5865959000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-564347000	USD
	mfa	Principal Paymentson Securities Soldunder Agreementsto Repurchaseand Other Advances PrincipalPaymentsonSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	21401578000	USD
	mfa	Principal Paymentson Securities Soldunder Agreementsto Repurchaseand Other Advances PrincipalPaymentsonSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	54103776000	USD
	mfa	Proceedsfrom Securities Soldunder Agreementsto Repurchase With Markto Market Collateral Provisions ProceedsfromSecuritiesSoldunderAgreementstoRepurchaseWithMarktoMarketCollateralProvisions	13749720000	USD
	mfa	Proceedsfrom Securities Soldunder Agreementsto Repurchase With Markto Market Collateral Provisions ProceedsfromSecuritiesSoldunderAgreementstoRepurchaseWithMarktoMarketCollateralProvisions	54796010000	USD
	mfa	Principal Payments On Financing Agreements With Non Mark To Market Collateral Provisions PrincipalPaymentsOnFinancingAgreementsWithNonMarkToMarketCollateralProvisions	312638000	USD
	mfa	Principal Payments On Financing Agreements With Non Mark To Market Collateral Provisions PrincipalPaymentsOnFinancingAgreementsWithNonMarkToMarketCollateralProvisions	0	USD
	mfa	Proceedsfrom Securities Soldunder Agreementsto Repurchase With Non Markto Market Collateral Provisions ProceedsfromSecuritiesSoldunderAgreementstoRepurchaseWithNonMarktoMarketCollateralProvisions	2036597000	USD
	mfa	Proceedsfrom Securities Soldunder Agreementsto Repurchase With Non Markto Market Collateral Provisions ProceedsfromSecuritiesSoldunderAgreementstoRepurchaseWithNonMarktoMarketCollateralProvisions	0	USD
	mfa	Principal Payments On Senior Secured Credit Agreement PrincipalPaymentsOnSeniorSecuredCreditAgreement	18750000	USD
	mfa	Principal Payments On Senior Secured Credit Agreement PrincipalPaymentsOnSeniorSecuredCreditAgreement	0	USD
	mfa	Proceedsfrom Senior Credit Agreements ProceedsfromSeniorCreditAgreements	480959000	USD
	mfa	Proceedsfrom Senior Credit Agreements ProceedsfromSeniorCreditAgreements	0	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	133450000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	79350000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	391154000	USD
	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	223311000	USD
	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	88405000	USD
	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	47622000	USD
	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	275000000	USD
	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	0	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	8948000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	725000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8861000	USD
	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	14041000	USD
	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	21578000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	11250000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	90749000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	270951000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5127900000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	515233000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	754810000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	104482000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	134664000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	88709000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	889474000	USD
	mfa	Number Of Days Considered To Classify Loans Delinquent NumberOfDaysConsideredToClassifyLoansDelinquent	P60D
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	193191000	USD
	us-gaap	Interest Paid Net InterestPaidNet	213318000	USD
	us-gaap	Interest Paid Net InterestPaidNet	237644000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	74891000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	193531000	USD
CY2020Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	22758000	USD
CY2019Q3	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	90614000	USD
	mfa	Noncash Payablefor Unsettled Loan Purchases NoncashPayableforUnsettledLoanPurchases	0	USD
	mfa	Noncash Payablefor Unsettled Loan Purchases NoncashPayableforUnsettledLoanPurchases	59524000	USD
	us-gaap	Nature Of Operations NatureOfOperations	Organization <div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%"> </span></div><div style="text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">MFA Financial, Inc. (the “Company”) was incorporated in Maryland on July 24, 1997 and began operations on April 10, 1998. The Company has elected to be treated as a real estate investment trust (“REIT”) for U.S. federal income tax purposes. In order to maintain its qualification as a REIT, the Company must comply with a number of requirements under federal tax law, including that it must distribute at least 90% of its annual REIT taxable income to its stockholders. The Company has elected to treat certain of its subsidiaries as taxable REIT subsidiaries (“TRS”). In general, a TRS may hold assets and engage in activities that the Company cannot hold or engage in directly and generally may engage in any real estate or non-real estate related business. (See Note 2(n))</span></div>
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
	mfa	Number Of Days Considered To Classify Loans Delinquent NumberOfDaysConsideredToClassifyLoansDelinquent	P60D
	mfa	Ratio Loan To Value RatioLoanToValue	0.80
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	884200000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	70600000	USD
CY2020Q3	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	837600000	USD
CY2019Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	39600000	USD
CY2020Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	5300000	USD
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	64000000.0	USD
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	mfa	Repurchase Agreements Financing Collateralized Period High Endof Range RepurchaseAgreementsFinancingCollateralizedPeriodHighEndofRange	P12M
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	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-75500000	USD
CY2020Q3	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	5600000000	USD
CY2019Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	7400000000	USD
CY2020Q3	mfa	Purchased Performing Loans PurchasedPerformingLoans	3791792000	USD
CY2019Q4	mfa	Purchased Performing Loans PurchasedPerformingLoans	5370653000	USD
CY2020Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	702013000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	698717000	USD
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CY2019Q4	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	6069370000	USD
CY2020Q3	us-gaap	Allowance For Loan And Lease Losses Real Estate AllowanceForLoanAndLeaseLossesRealEstate	106246000	USD
CY2019Q4	us-gaap	Allowance For Loan And Lease Losses Real Estate AllowanceForLoanAndLeaseLossesRealEstate	3025000	USD
CY2020Q3	mfa	Residential Whole Loans Net ResidentialWholeLoansNet	4387559000	USD
CY2019Q4	mfa	Residential Whole Loans Net ResidentialWholeLoansNet	6066345000	USD
CY2020Q3	mfa	Residential Whole Loans ResidentialWholeLoans	13754	loan
CY2019Q4	mfa	Residential Whole Loans ResidentialWholeLoans	17082	loan
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	3025000	USD
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CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	647000	USD
CY2020Q1	mfa	Financing Receivable Valuation Allowance Adjustment FinancingReceivableValuationAllowanceAdjustment	-70181000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	218011000	USD
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CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	627000	USD
CY2020Q2	mfa	Financing Receivable Valuation Allowance Adjustment FinancingReceivableValuationAllowanceAdjustment	70181000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	136589000	USD
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CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	281000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	106246000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	968000	USD
CY2019Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	683000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	0	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1651000	USD
CY2019Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	385000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	50000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1986000	USD
CY2019Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	347000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	62000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	2271000	USD
	mfa	Financing Receivable Allowancefor Credit Loss Adoptionof New Accounting Principle FinancingReceivableAllowanceforCreditLossAdoptionofNewAccountingPrinciple	70600000	USD
	mfa	Financing Receivable Gross Upof Amortized Costof Purchased Credit Deteriorated Loans FinancingReceivableGrossUpofAmortizedCostofPurchasedCreditDeterioratedLoans	62400000	USD
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	USD
CY2020Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	490345000	USD
CY2020Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2091705000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	948938000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	107208000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	12768000	USD
CY2020Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	842842000	USD
CY2020Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	4493806000	USD
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	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1555000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	0	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	0	USD
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	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	1555000	USD
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CY2020Q3	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Transfersto Reo ResidentialWholeLoansFairValueNetIncomeLossGainLossonTransferstoREO	531000	USD
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CY2020Q3	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	76871000	USD
CY2019Q3	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	40175000	USD
	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	44431000	USD
	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	116915000	USD
CY2020Q3	mfa	Financing Receivable Unpaid Principal Balance FinancingReceivableUnpaidPrincipalBalance	24100000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	800000	USD
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CY2020Q3	mfa	Available For Sale Securities Accretable Purchase Discounts AvailableForSaleSecuritiesAccretablePurchaseDiscounts	8315000	USD
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CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	152765000	USD
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CY2019Q4	mfa	Available For Sale Securities Accretable Purchase Discounts AvailableForSaleSecuritiesAccretablePurchaseDiscounts	90694000	USD
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CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	18818000	USD
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CY2020Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	104480000	USD
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CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	439898000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	392722000	USD
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CY2019Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	14499000	USD
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	mfa	Other Comprehensive Income Loss Availableforsale Securities Adjustment Excluding Cumulative Effect Netof Tax Portion Attributableto Parent OtherComprehensiveIncomeLossAvailableforsaleSecuritiesAdjustmentExcludingCumulativeEffectNetofTaxPortionAttributabletoParent	-324811000	USD
	mfa	Other Comprehensive Income Loss Availableforsale Securities Adjustment Excluding Cumulative Effect Netof Tax Portion Attributableto Parent OtherComprehensiveIncomeLossAvailableforsaleSecuritiesAdjustmentExcludingCumulativeEffectNetofTaxPortionAttributabletoParent	13715000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	67911000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	430882000	USD
CY2020Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	67911000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	430882000	USD
CY2020Q3	us-gaap	Real Estate Investments RealEstateInvestments	298866000	USD
CY2019Q4	us-gaap	Real Estate Investments RealEstateInvestments	411659000	USD
CY2020Q3	mfa	Capital Contributionsto Loan Origination Partners CapitalContributionstoLoanOriginationPartners	108887000	USD
CY2019Q4	mfa	Capital Contributionsto Loan Origination Partners CapitalContributionstoLoanOriginationPartners	147992000	USD
CY2020Q3	us-gaap	Other Interest Earning Assets OtherInterestEarningAssets	45442000	USD
CY2019Q4	us-gaap	Other Interest Earning Assets OtherInterestEarningAssets	70468000	USD
CY2020Q3	us-gaap	Interest Receivable InterestReceivable	42723000	USD
CY2019Q4	us-gaap	Interest Receivable InterestReceivable	70986000	USD
CY2020Q3	mfa	Principal Receivable Advances Suspense Accountsand Other PrincipalReceivableAdvancesSuspenseAccountsandOther	36342000	USD
CY2019Q4	mfa	Principal Receivable Advances Suspense Accountsand Other PrincipalReceivableAdvancesSuspenseAccountsandOther	43842000	USD
CY2020Q3	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	39354000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	39304000	USD
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	11796000	USD
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	9264000	USD
CY2020Q3	us-gaap	Other Assets OtherAssets	571614000	USD
CY2019Q4	us-gaap	Other Assets OtherAssets	784251000	USD
CY2020Q3	mfa	Real Estate Heldfor Investment RealEstateHeldforInvestment	59300000	USD
CY2019Q4	mfa	Real Estate Heldfor Investment RealEstateHeldforInvestment	27300000	USD
CY2020Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1131	property
CY2020Q3	us-gaap	Real Estate Investments RealEstateInvestments	298900000	USD
CY2019Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1652	property
CY2019Q4	us-gaap	Real Estate Investments RealEstateInvestments	411700000	USD
CY2020Q3	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	295700000	USD
CY2020Q2	us-gaap	Real Estate Investments RealEstateInvestments	348516000	USD
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334069000	USD
CY2019Q4	us-gaap	Real Estate Investments RealEstateInvestments	411659000	USD
CY2018Q4	us-gaap	Real Estate Investments RealEstateInvestments	249413000	USD
CY2020Q3	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	-93000	USD
CY2019Q3	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	3875000	USD
CY2020Q3	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	15672000	USD
CY2019Q3	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	61888000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	74891000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	193531000	USD
CY2020Q3	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	536000	USD
CY2019Q3	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	5108000	USD
	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	9334000	USD
	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	16307000	USD
CY2020Q3	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	65951000	USD
CY2019Q3	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	20990000	USD
	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	185222000	USD
	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	73787000	USD
CY2020Q3	us-gaap	Real Estate Investments RealEstateInvestments	298866000	USD
CY2019Q3	us-gaap	Real Estate Investments RealEstateInvestments	376200000	USD
CY2020Q3	us-gaap	Real Estate Investments RealEstateInvestments	298866000	USD
CY2019Q3	us-gaap	Real Estate Investments RealEstateInvestments	376200000	USD
CY2020Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1131	property
CY2019Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1508	property
CY2020Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1131	property
CY2019Q3	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1508	property
CY2020Q3	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	834000	USD
CY2019Q3	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	5000000.0	USD
	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	4100000	USD
	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	16100000	USD
CY2020Q3	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	267	property
	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	812	property
CY2020Q3	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	69900000	USD
	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	195200000	USD
CY2020Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	3900000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	10000000.0	USD
CY2019Q3	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	142	property
	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	431	property
CY2019Q3	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	23000000.0	USD
	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	80000000.0	USD
CY2019Q3	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	2100000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	5800000	USD
CY2020Q3	mfa	Derivative Terminated Amount DerivativeTerminatedAmount	4100000000	USD
CY2020Q3	us-gaap	Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring LossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurring	7200000	USD
CY2020Q2	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-7176000	USD
CY2019Q2	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-28114000	USD
CY2019Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-22675000	USD
CY2018Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	3121000	USD
CY2020Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2019Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-233000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-50127000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-30384000	USD
CY2020Q3	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	7176000	USD
CY2019Q3	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-685000	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	72802000	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-1769000	USD
CY2020Q3	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	0	USD
CY2019Q3	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-29032000	USD
CY2020Q3	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	0	USD
CY2019Q3	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-29032000	USD
CY2020Q3	mfa	Financing Agreements Unpaid Principal Balance FinancingAgreementsUnpaidPrincipalBalance	4864554000	USD
CY2020Q3	mfa	Financing Agreements Fair Valueand Carrying Value FinancingAgreementsFairValueandCarryingValue	4851121000	USD
CY2019Q4	mfa	Financing Agreements Unpaid Principal Balance FinancingAgreementsUnpaidPrincipalBalance	10044844000	USD
CY2019Q4	mfa	Financing Agreements Fair Valueand Carrying Value FinancingAgreementsFairValueandCarryingValue	10031606000	USD
CY2020Q3	mfa	Repurchase Agreements Number Of Counterparties RepurchaseAgreementsNumberOfCounterparties	8	counterparty
CY2019Q4	mfa	Repurchase Agreements Number Of Counterparties RepurchaseAgreementsNumberOfCounterparties	28	counterparty
CY2020Q3	mfa	Repurchase Agreement Counterparty Risk As Percentage Of Stockholders Equity RepurchaseAgreementCounterpartyRiskAsPercentageOfStockholdersEquity	0.05
CY2020Q3	mfa	Amounts At Risk Exceeding Equity AmountsAtRiskExceedingEquity	0.05
CY2020Q3	us-gaap	Pledged Assets Separately Reported Securities Pledged For Repurchase Agreements At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForRepurchaseAgreementsAtFairValue	5200000000	USD
CY2019Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Repurchase Agreements At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForRepurchaseAgreementsAtFairValue	11300000000	USD
CY2020Q3	mfa	Pledged Financial Instruments Not Separately Reported Securities Pledged Aggregate Fair Value And Accrued Interest PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedAggregateFairValueAndAccruedInterest	35800000	USD
CY2019Q4	mfa	Pledged Financial Instruments Not Separately Reported Securities Pledged Aggregate Fair Value And Accrued Interest PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedAggregateFairValueAndAccruedInterest	57200000	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	5200000000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	11200000000	USD
CY2020Q3	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	0	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	2200000	USD
CY2020Q3	mfa	Dividendsand Dividend Equivalents Payable DividendsandDividendEquivalentsPayable	22758000	USD
CY2019Q4	mfa	Dividendsand Dividend Equivalents Payable DividendsandDividendEquivalentsPayable	90749000	USD
CY2020Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	14588000	USD
CY2019Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	18238000	USD
CY2020Q3	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	29136000	USD
CY2019Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	42819000	USD
CY2020Q3	us-gaap	Other Liabilities OtherLiabilities	66482000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	151806000	USD
	mfa	Operating Leases Number Of Operating Leases OperatingLeasesNumberOfOperatingLeases	3	lease
CY2020Q3	mfa	Repurchase Loans Allowance RepurchaseLoansAllowance	0	USD
CY2020Q3	mfa	Unfunded Commitment UnfundedCommitment	73200000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.05
CY2005Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	4000000.0	shares
CY2013Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	10000000.0	shares
CY2020Q3	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	6616355	shares
CY2020Q2	us-gaap	Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights	37039106	shares
CY2020Q2	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	495000000.0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-7570000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	335806000	USD
CY2020Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-7116000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	660594000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-454000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-324788000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	19701000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	38139000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-18438000	USD
CY2020Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-7116000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	660594000	USD
CY2019Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	15184000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	38139000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	87210000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	95599000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-725207000	USD
	us-gaap	Net Income Loss NetIncomeLoss	277496000	USD
CY2020Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	8219000	USD
CY2019Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	21578000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	11250000	USD
CY2020Q3	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	325000	USD
CY2019Q3	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	280000	USD
	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	91000	USD
	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	808000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	78666000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	91569000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-746876000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	265438000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	453323000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	451020000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	453170000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	450641000	shares
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	78666000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	91569000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-746876000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	265438000	USD
CY2020Q3	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	3898000	USD
CY2019Q3	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	3879000	USD
	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	5085000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	82564000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	479940000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	453170000	shares
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	95448000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-746876000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	270523000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	453323000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	451020000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	453170000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	450641000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	28920000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	28920000	shares
	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	12712000	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	11297000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	493540000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	463353000	shares
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.65
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	39000000.0	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	18000000.0	shares
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	14300000	shares
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2267000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1288000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5094000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4724000	USD
CY2020Q3	mfa	Employment Agreements Number Of Officers EmploymentAgreementsNumberOfOfficers	3	officer
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1616520000	USD
CY2020Q3	us-gaap	Other Liabilities Fair Value Disclosure OtherLiabilitiesFairValueDisclosure	388790000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	6522565000	USD
CY2019Q3	mfa	Residential Whole Loans Heldat Fair Value Purchase Transaction Committedin Previous Period Closedin Subsequent Period ResidentialWholeLoansHeldatFairValuePurchaseTransactionCommittedinPreviousPeriodClosedinSubsequentPeriod	87000000.0	USD
CY2019Q2	mfa	Residential Whole Loans Heldat Fair Value Purchase Transaction Committedin Previous Period Closedin Subsequent Period ResidentialWholeLoansHeldatFairValuePurchaseTransactionCommittedinPreviousPeriodClosedinSubsequentPeriod	70600000	USD
CY2020Q3	mfa	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value Level3 Excluding Loan Purchase Price CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValueLevel3ExcludingLoanPurchasePrice	1229187000	USD
CY2019Q4	mfa	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value Level3 Excluding Loan Purchase Price CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValueLevel3ExcludingLoanPurchasePrice	1381113000	USD
CY2020Q3	mfa	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value Purchases Excludedfrom Level3 Fair Value Methodology Disclosures CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValuePurchasesExcludedfromLevel3FairValueMethodologyDisclosures	477000	USD
CY2019Q4	mfa	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value Purchases Excludedfrom Level3 Fair Value Methodology Disclosures CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValuePurchasesExcludedfromLevel3FairValueMethodologyDisclosures	470000	USD
CY2020Q3	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	74900000	USD
CY2019Q4	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	193500000	USD
CY2020Q3	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	5600000000	USD
CY2019Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	7400000000	USD
CY2020Q3	mfa	Residential Whole Loans Net ResidentialWholeLoansNet	4400000000	USD
CY2019Q4	mfa	Residential Whole Loans Net ResidentialWholeLoansNet	6100000000	USD
CY2020Q3	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue	1200000000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue	1400000000	USD
CY2013Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	10000000	USD
CY2020Q3	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	6600000	shares
CY2020Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	453300000	shares

Files In Submission

Name	View Source	Status
0001055160-20-000033-index-headers.html	Edgar Link	pending
0001055160-20-000033-index.html	Edgar Link	pending
0001055160-20-000033.txt	Edgar Link	pending
0001055160-20-000033-xbrl.zip	Edgar Link	pending
exhibit311certificatio.htm	Edgar Link	pending
exhibit312certificatio.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
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mfa-20200930.htm	Edgar Link	pending
mfa-20200930.xsd	Edgar Link	pending
mfa-20200930_cal.xml	Edgar Link	unprocessable
mfa-20200930_def.xml	Edgar Link	unprocessable
mfa-20200930_htm.xml	Edgar Link	completed
mfa-20200930_lab.xml	Edgar Link	unprocessable
mfa-20200930_pre.xml	Edgar Link	unprocessable
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$MFA
MFA FINANCIAL, INC. Stock $mfa

2020 Q4 Form 10-Q Financial Statement

#000105516020000033 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA MFA FINANCIAL, INC. Stock $mfa

2020 Q4 Form 10-Q Financial Statement

#000105516020000033 Filed on November 05, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA
MFA FINANCIAL, INC. Stock $mfa