$MFA
MFA FINANCIAL, INC. Stock $mfa

$mfa Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000105516022000005 Filed on February 23, 2022

Income Statement

Concept	2021 Q4	2021 Q3	2021
Revenue	$74.51M	$90.88M	$362.3M
YoY Change	23.2%	9.98%	-16.3%
Cost Of Revenue	$35.70M	$29.07M	$120.4M
YoY Change	-12.94%	-48.1%	-55.21%
Gross Profit	$38.81M	$129.8M	$327.6M
YoY Change	-23.75%	48.5%	-462.42%
Gross Profit Margin	52.09%	142.81%	90.43%
Selling, General & Admin	$28.68M	$24.87M	$85.55M
YoY Change	222.19%	35.9%	50.87%
% of Gross Profit	73.88%	19.16%	26.11%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.300M	$3.300M	$6.600M
YoY Change
% of Gross Profit	8.5%	2.54%	2.01%
Operating Expenses	$40.71M	$23.75M	$78.15M
YoY Change	714.28%	838941135291581400.0%	-34.55%
Operating Profit	-$1.903M	$106.0M	$249.5M
YoY Change	-104.15%	21.33%	-218.91%
Interest Expense		$29.07M	$120.4M
YoY Change		-48.06%	-55.21%
% of Operating Profit		27.41%	48.26%
Other Income/Expense, Net
YoY Change
Pretax Income	$44.12M	$132.5M	$328.9M
YoY Change	-3.66%	51.96%	-148.41%
Income Tax		$837.0K	$2.669M
% Of Pretax Income		0.63%	0.81%
Net Earnings	$44.12M	$132.5M	$328.9M
YoY Change	-3.7%	51.94%	-148.41%
Net Earnings / Revenue	59.22%	145.81%	90.77%
Basic Earnings Per Share		$0.28	$0.67
Diluted Earnings Per Share	$375.2K	$0.27	$0.66
COMMON SHARES
Basic Shares Outstanding	440.9M shares	440.9M shares	442.8M shares
Diluted Shares Outstanding		473.2M shares	473.9M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2021
SHORT-TERM ASSETS
Cash & Short-Term Investments	$304.7M	$526.2M	$304.7M
YoY Change	-62.57%	-40.47%	-62.57%
Cash & Equivalents	$304.7M	$526.2M	$304.7M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$354.9M	$567.7M	$354.9M
YoY Change	-56.4%	-35.78%	-56.4%
LONG-TERM ASSETS
Property, Plant & Equipment	$39.37M	$39.50M	$39.37M
YoY Change
Goodwill	$61.08M	$61.08M
YoY Change
Intangibles	$21.40M	$24.70M
YoY Change
Long-Term Investments	$8.209B	$7.409B	$8.209B
YoY Change	41.24%	20.9%	41.24%
Other Assets	$99.75M	$55.51M	$99.75M
YoY Change	1325.01%	1010.14%	1325.01%
Total Long-Term Assets	$8.785B	$7.920B	$8.785B
YoY Change	43.58%	20.02%	43.59%
TOTAL ASSETS
Total Short-Term Assets	$354.9M	$567.7M	$354.9M
Total Long-Term Assets	$8.785B	$7.920B	$8.785B
Total Assets	$9.140B	$8.488B	$9.140B
YoY Change	31.84%	13.42%	31.85%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$170.3M	$128.7M	$170.3M
YoY Change	360.29%	192.48%	360.29%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$218.1M	$336.0M	$218.1M
YoY Change	207.12%	401.43%	207.12%
LONG-TERM LIABILITIES
Long-Term Debt	$6.379B	$5.551B	$6.379B
YoY Change	47.08%	14.43%	47.08%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$6.379B	$5.551B	$6.379B
YoY Change	47.08%	14.43%	47.08%
TOTAL LIABILITIES
Total Short-Term Liabilities	$218.1M	$336.0M	$218.1M
Total Long-Term Liabilities	$6.379B	$5.551B	$6.379B
Total Liabilities	$6.597B	$5.887B	$6.597B
YoY Change	49.67%	19.71%	49.69%
SHAREHOLDERS EQUITY
Retained Earnings	-$1.279B	-$1.268B
YoY Change	-8.95%	-10.04%
Common Stock	$1.082M	$4.409M
YoY Change	-76.05%	-2.74%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.543B	$2.601B	$2.543B
YoY Change
Total Liabilities & Shareholders Equity	$9.140B	$8.488B	$9.140B
YoY Change	31.84%	13.42%	31.85%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2021
OPERATING ACTIVITIES
Net Income	$44.12M	$132.5M	$328.9M
YoY Change	-3.7%	51.94%	-148.41%
Depreciation, Depletion And Amortization	$3.300M	$3.300M	$6.600M
YoY Change
Cash From Operating Activities	$11.22M	$12.48M	$120.3M
YoY Change	-48.05%	-131.35%	213.3%
INVESTING ACTIVITIES
Capital Expenditures	$38.69M	-$7.146M	$12.05M
YoY Change	-1205.34%	410.43%	147.8%
Acquisitions
YoY Change
Other Investing Activities	-$980.0M	-$1.258B	-$2.155B
YoY Change	-288.09%	-372.32%	-133.73%
Cash From Investing Activities	-$941.3M	-$1.265B	-$2.167B
YoY Change	-281.89%	-374.69%	-133.95%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$83.77M
YoY Change			93.04%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	752.8M	919.3M	$1.630B
YoY Change	-223.99%	-548.42%	-128.42%
NET CHANGE
Cash From Operating Activities	11.22M	12.48M	$120.3M
Cash From Investing Activities	-941.3M	-1.265B	-$2.167B
Cash From Financing Activities	752.8M	919.3M	$1.630B
Net Change In Cash	-177.3M	-333.5M	-$417.1M
YoY Change	160.74%	-254.54%	-160.72%
FREE CASH FLOW
Cash From Operating Activities	$11.22M	$12.48M	$120.3M
Capital Expenditures	$38.69M	-$7.146M	$12.05M
Free Cash Flow	-$27.47M	$19.62M	$108.2M
YoY Change	-209.43%	-151.1%	222.79%

Facts In Submission

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CY2021	dei	Entity File Number EntityFileNumber	1-13991
CY2021	dei	Entity Registrant Name EntityRegistrantName	MFA FINANCIAL, INC.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
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CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	15000000	USD
CY2021	mfa	Net Income Loss Available To Common Stockholders Basic And Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAndParticipatingSecurities	295995000	USD
CY2020	mfa	Net Income Loss Available To Common Stockholders Basic And Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAndParticipatingSecurities	-709186000	USD
CY2019	mfa	Net Income Loss Available To Common Stockholders Basic And Participating Securities NetIncomeLossAvailableToCommonStockholdersBasicAndParticipatingSecurities	363117000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.57
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.80
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.66
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.57
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2021	us-gaap	Net Income Loss NetIncomeLoss	328870000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-679390000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	378117000	USD
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-32774000	USD
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	420281000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	20335000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	389127000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	44600000	USD
CY2021	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	0	USD
CY2020	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	344269000	USD
CY2019	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	180000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-50127000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-23342000	USD
CY2021	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	-1059000	USD
CY2020	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	2314000	USD
CY2019	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	0	USD
CY2021	mfa	Other Comprehensive Income Loss Amortization Of De Designated Hedging Instruments After Reclassification And Tax OtherComprehensiveIncomeLossAmortizationOfDeDesignatedHedgingInstrumentsAfterReclassificationAndTax	0	USD
CY2020	mfa	Other Comprehensive Income Loss Amortization Of De Designated Hedging Instruments After Reclassification And Tax OtherComprehensiveIncomeLossAmortizationOfDeDesignatedHedgingInstrumentsAfterReclassificationAndTax	72802000	USD
CY2019	mfa	Other Comprehensive Income Loss Amortization Of De Designated Hedging Instruments After Reclassification And Tax OtherComprehensiveIncomeLossAmortizationOfDeDesignatedHedgingInstrumentsAfterReclassificationAndTax	-2454000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31715000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-292754000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-50241000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	297155000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-972144000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	327876000	USD
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	32875000	USD
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	29796000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	15000000	USD
CY2021	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	264280000	USD
CY2020	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	-1001940000	USD
CY2019	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	312876000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2524802000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	328870000	USD
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1832000	USD
CY2021	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	86393000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9038000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-837000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.385
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	169275000	USD
CY2021	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	599000	USD
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-32774000	USD
CY2021	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	-1059000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	2542848000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	3383952000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-679390000	USD
CY2020	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	7453000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	53577000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	6715000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	856000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.125
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	56546000	USD
CY2020	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	229000	USD
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-313115000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	22675000	USD
CY2020	mfa	Adjustments To Additional Paid In Capital Warrant Issued And Repurchased Net AdjustmentsToAdditionalPaidInCapitalWarrantIssuedAndRepurchasedNet	-19608000	USD
CY2020	mfa	Other Comprehensive Income Loss Change In Fair Value Of Financing Agreements At Fair Value OtherComprehensiveIncomeLossChangeInFairValueOfFinancingAgreementsAtFairValue	2314000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2524802000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	3416101000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	378117000	USD
CY2019	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	12325000	USD
CY2019	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	4118000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9230000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-345000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.80
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	361033000	USD
CY2019	us-gaap	Dividends Preferred Stock DividendsPreferredStock	15000000	USD
CY2019	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	1084000	USD
CY2019	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-24445000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-25796000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	3383952000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	328870000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	-679390000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	378117000	USD
CY2021	mfa	Residential Whole Loans Gain Loss ResidentialWholeLoansGainLoss	31703000	USD
CY2020	mfa	Residential Whole Loans Gain Loss ResidentialWholeLoansGainLoss	-243933000	USD
CY2019	mfa	Residential Whole Loans Gain Loss ResidentialWholeLoansGainLoss	79948000	USD
CY2021	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	1606000	USD
CY2020	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	74515000	USD
CY2019	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	69082000	USD
CY2021	mfa	Impairment And Other Gains Losses On Debt Securities Available For Sale And Other Assets Including Gain On Investments ImpairmentAndOtherGainsLossesOnDebtSecuritiesAvailableForSaleAndOtherAssetsIncludingGainOnInvestments	-72996000	USD
CY2020	mfa	Impairment And Other Gains Losses On Debt Securities Available For Sale And Other Assets Including Gain On Investments ImpairmentAndOtherGainsLossesOnDebtSecuritiesAvailableForSaleAndOtherAssetsIncludingGainOnInvestments	425082000	USD
CY2019	mfa	Impairment And Other Gains Losses On Debt Securities Available For Sale And Other Assets Including Gain On Investments ImpairmentAndOtherGainsLossesOnDebtSecuritiesAvailableForSaleAndOtherAssetsIncludingGainOnInvestments	180000	USD
CY2021	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	0	USD
CY2020	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-57034000	USD
CY2019	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	0	USD
CY2021	mfa	Accretion Of Purchase Discounts AccretionOfPurchaseDiscounts	59424000	USD
CY2020	mfa	Accretion Of Purchase Discounts AccretionOfPurchaseDiscounts	-10949000	USD
CY2019	mfa	Accretion Of Purchase Discounts AccretionOfPurchaseDiscounts	25167000	USD
CY2021	mfa	Provision For Credit And Valuation Losses On Residential Whole Loans And Other Financial Instruments At Carrying Value ProvisionForCreditAndValuationLossesOnResidentialWholeLoansAndOtherFinancialInstrumentsAtCarryingValue	-48355000	USD
CY2020	mfa	Provision For Credit And Valuation Losses On Residential Whole Loans And Other Financial Instruments At Carrying Value ProvisionForCreditAndValuationLossesOnResidentialWholeLoansAndOtherFinancialInstrumentsAtCarryingValue	22121000	USD
CY2019	mfa	Provision For Credit And Valuation Losses On Residential Whole Loans And Other Financial Instruments At Carrying Value ProvisionForCreditAndValuationLossesOnResidentialWholeLoansAndOtherFinancialInstrumentsAtCarryingValue	2569000	USD
CY2021	mfa	Other Non Cash Losses Included In Net Income OtherNonCashLossesIncludedInNetIncome	10902000	USD
CY2020	mfa	Other Non Cash Losses Included In Net Income OtherNonCashLossesIncludedInNetIncome	44055000	USD
CY2019	mfa	Other Non Cash Losses Included In Net Income OtherNonCashLossesIncludedInNetIncome	24815000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	19441000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-39930000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	34262000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	14046000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-50803000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	18553000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	120293000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38396000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	215775000	USD
CY2021	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	4516971000	USD
CY2020	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	1477320000	USD
CY2019	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	4591422000	USD
CY2021	mfa	Proceeds From Sale Of Residential Whole Loans ProceedsFromSaleOfResidentialWholeLoans	0	USD
CY2020	mfa	Proceeds From Sale Of Residential Whole Loans ProceedsFromSaleOfResidentialWholeLoans	1510902000	USD
CY2019	mfa	Proceeds From Sale Of Residential Whole Loans ProceedsFromSaleOfResidentialWholeLoans	-6769000	USD
CY2021	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	2012901000	USD
CY2020	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	1825606000	USD
CY2019	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	1378529000	USD
CY2021	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	6121000	USD
CY2020	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2021	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	0	USD
CY2020	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	163748000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1008215000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	3790148000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	908697000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	157297000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	633194000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	2098416000	USD
CY2021	mfa	Purchase Of Real Estate Owned And Capital Improvements PurchaseOfRealEstateOwnedAndCapitalImprovements	1338000	USD
CY2020	mfa	Purchase Of Real Estate Owned And Capital Improvements PurchaseOfRealEstateOwnedAndCapitalImprovements	10198000	USD
CY2019	mfa	Purchase Of Real Estate Owned And Capital Improvements PurchaseOfRealEstateOwnedAndCapitalImprovements	20110000	USD
CY2021	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	187010000	USD
CY2020	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	279786000	USD
CY2019	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	108012000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12048000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4862000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1879000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2167028000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	6383508000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1134741000	USD
CY2021	mfa	Principal Payments On Securities Sold Under Agreements To Repurchase And Other Advances PrincipalPaymentsOnSecuritiesSoldUnderAgreementsToRepurchaseAndOtherAdvances	1822198000	USD
CY2020	mfa	Principal Payments On Securities Sold Under Agreements To Repurchase And Other Advances PrincipalPaymentsOnSecuritiesSoldUnderAgreementsToRepurchaseAndOtherAdvances	21810920000	USD
CY2019	mfa	Principal Payments On Securities Sold Under Agreements To Repurchase And Other Advances PrincipalPaymentsOnSecuritiesSoldUnderAgreementsToRepurchaseAndOtherAdvances	67463756000	USD
CY2021	mfa	Proceeds From Securities Sold Under Agreements To Repurchase With Mark To Market Collateral Provisions ProceedsFromSecuritiesSoldUnderAgreementsToRepurchaseWithMarkToMarketCollateralProvisions	3022279000	USD
CY2020	mfa	Proceeds From Securities Sold Under Agreements To Repurchase With Mark To Market Collateral Provisions ProceedsFromSecuritiesSoldUnderAgreementsToRepurchaseWithMarkToMarketCollateralProvisions	14008042000	USD
CY2019	mfa	Proceeds From Securities Sold Under Agreements To Repurchase With Mark To Market Collateral Provisions ProceedsFromSecuritiesSoldUnderAgreementsToRepurchaseWithMarkToMarketCollateralProvisions	68724021000	USD
CY2021	mfa	Principal Payments On Financing Agreements With Non Mark To Market Collateral Provisions PrincipalPaymentsOnFinancingAgreementsWithNonMarkToMarketCollateralProvisions	1883068000	USD
CY2020	mfa	Principal Payments On Financing Agreements With Non Mark To Market Collateral Provisions PrincipalPaymentsOnFinancingAgreementsWithNonMarkToMarketCollateralProvisions	1733345000	USD
CY2019	mfa	Principal Payments On Financing Agreements With Non Mark To Market Collateral Provisions PrincipalPaymentsOnFinancingAgreementsWithNonMarkToMarketCollateralProvisions	114386000	USD
CY2021	mfa	Proceeds From Securities Sold Under Agreements To Repurchase With Non Mark To Market Collateral Provisions ProceedsFromSecuritiesSoldUnderAgreementsToRepurchaseWithNonMarkToMarketCollateralProvisions	2692576000	USD
CY2020	mfa	Proceeds From Securities Sold Under Agreements To Repurchase With Non Mark To Market Collateral Provisions ProceedsFromSecuritiesSoldUnderAgreementsToRepurchaseWithNonMarkToMarketCollateralProvisions	3803150000	USD
CY2019	mfa	Proceeds From Securities Sold Under Agreements To Repurchase With Non Mark To Market Collateral Provisions ProceedsFromSecuritiesSoldUnderAgreementsToRepurchaseWithNonMarkToMarketCollateralProvisions	0	USD
CY2021	mfa	Payments Made For Securitization Related Cost PaymentsMadeForSecuritizationRelatedCost	7145000	USD
CY2020	mfa	Payments Made For Securitization Related Cost PaymentsMadeForSecuritizationRelatedCost	1699000	USD
CY2019	mfa	Payments Made For Securitization Related Cost PaymentsMadeForSecuritizationRelatedCost	0	USD
CY2021	mfa	Principal Payment On Redemption Of Senior Notes PrincipalPaymentOnRedemptionOfSeniorNotes	100000000	USD
CY2020	mfa	Principal Payment On Redemption Of Senior Notes PrincipalPaymentOnRedemptionOfSeniorNotes	0	USD
CY2019	mfa	Principal Payment On Redemption Of Senior Notes PrincipalPaymentOnRedemptionOfSeniorNotes	0	USD
CY2021	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2020	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
CY2019	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	223311000	USD
CY2021	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	0	USD
CY2020	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	60022000	USD
CY2019	us-gaap	Payments For Hedge Financing Activities PaymentsForHedgeFinancingActivities	40029000	USD
CY2021	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	275000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Redeemable Preferred Stock ProceedsFromIssuanceOfRedeemablePreferredStock	0	USD
CY2021	mfa	Payments For Issuance Of Preferred Stock PaymentsForIssuanceOfPreferredStock	0	USD
CY2020	mfa	Payments For Issuance Of Preferred Stock PaymentsForIssuanceOfPreferredStock	8948000	USD
CY2019	mfa	Payments For Issuance Of Preferred Stock PaymentsForIssuanceOfPreferredStock	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1825000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7441000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	12325000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	85591000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	50835000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2021	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	14041000	USD
CY2019	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	0	USD
CY2021	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	0	USD
CY2020	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	33650000	USD
CY2019	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	0	USD
CY2021	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	32875000	USD
CY2020	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	29796000	USD
CY2019	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	15000000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	156140000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	113508000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	361565000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1629663000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-5735049000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	964921000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-417072000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	686855000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	45955000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	821519000	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
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	404447000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	821519000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	134664000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	116966000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	254270000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	330398000	USD
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	72304000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	96766000	USD
CY2019	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	257701000	USD
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	47751000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	34016000	USD
CY2019Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	90749000	USD
CY2021	mfa	Right Of Use Lease And Asset Lease Liability RightOfUseLeaseAndAssetLeaseLiability	40893000	USD
CY2020	mfa	Right Of Use Lease And Asset Lease Liability RightOfUseLeaseAndAssetLeaseLiability	0	USD
CY2019	mfa	Right Of Use Lease And Asset Lease Liability RightOfUseLeaseAndAssetLeaseLiability	0	USD
CY2021	mfa	Termination Of Outstanding Preferred Equity Interests At Acquisition TerminationOfOutstandingPreferredEquityInterestsAtAcquisition	22030000	USD
CY2020	mfa	Termination Of Outstanding Preferred Equity Interests At Acquisition TerminationOfOutstandingPreferredEquityInterestsAtAcquisition	0	USD
CY2019	mfa	Termination Of Outstanding Preferred Equity Interests At Acquisition TerminationOfOutstandingPreferredEquityInterestsAtAcquisition	0	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	Organization 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 8).
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2021	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2021	mfa	Number Of Days Considered To Classify Loans Delinquent NumberOfDaysConsideredToClassifyLoansDelinquent	P60D
CY2021	mfa	Ratio Loan To Value RatioLoanToValue	0.80
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	304700000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	814400000	USD
CY2021Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	215800000	USD
CY2020Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	752400000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	99800000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	7200000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	21400000	USD
CY2021	mfa	Repurchase Agreements Financing Period Low End Of Range RepurchaseAgreementsFinancingPeriodLowEndOfRange	P1M
CY2021	mfa	Repurchase Agreements Financing Period High End Of Range RepurchaseAgreementsFinancingPeriodHighEndOfRange	P6M
CY2021	mfa	Repurchase Agreements Financing Collateralized Period High End Of Range RepurchaseAgreementsFinancingCollateralizedPeriodHighEndOfRange	P12M
CY2021Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loans And Other Loans At Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansAndOtherLoansAtCarryingValue	7900000000	USD
CY2020Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loans And Other Loans At Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansAndOtherLoansAtCarryingValue	5300000000	USD
CY2021Q4	us-gaap	Allowance For Loan And Lease Losses Real Estate AllowanceForLoanAndLeaseLossesRealEstate	39447000	USD
CY2020Q4	us-gaap	Allowance For Loan And Lease Losses Real Estate AllowanceForLoanAndLeaseLossesRealEstate	86833000	USD
CY2021Q4	mfa	Mortgage Loans On Real Estate Residential MortgageLoansOnRealEstateResidential	7913000000	USD
CY2020Q4	mfa	Mortgage Loans On Real Estate Residential MortgageLoansOnRealEstateResidential	5325401000	USD
CY2021Q4	mfa	Residential Whole Loans ResidentialWholeLoans	24095	loan
CY2020Q4	mfa	Residential Whole Loans ResidentialWholeLoans	18734	loan
CY2021	mfa	Number Of Whole Loans Sold NumberOfWholeLoansSold	0	loan
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	86833000	USD
CY2021Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-22372000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1217000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	63244000	USD
CY2021Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-8583000	USD
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	400000	USD
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54261000	USD
CY2021Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-9626000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	533000	USD
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	44102000	USD
CY2021Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-3430000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	1225000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	39447000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	3025000	USD
CY2020Q1	mfa	Financing Receivable Allowance For Credit Loss Adoption Of New Accounting Principle FinancingReceivableAllowanceForCreditLossAdoptionOfNewAccountingPrinciple	70555000	USD
CY2020Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	74897000	USD
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
CY2020Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-10614000	USD
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
CY2020Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-30062000	USD
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
CY2020Q4	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-18583000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	830000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	86833000	USD
CY2021	mfa	Financing Receivable Allowance For Credit Loss Adoption Of New Accounting Principle FinancingReceivableAllowanceForCreditLossAdoptionOfNewAccountingPrinciple	70600000	USD
CY2021	mfa	Financing Receivable Gross Up Of Amortized Cost Of Purchased Credit Deteriorated Loans FinancingReceivableGrossUpOfAmortizedCostOfPurchasedCreditDeterioratedLoans	62400000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	91409000	USD
CY2021Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	376866000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1018053000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	453900000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	53571000	USD
CY2021Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	653300000	USD
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	2647099000	USD
CY2021	mfa	Financing Receivable Originated In Fiscal Year Before Fiscal Year Gross Write Offs FinancingReceivableOriginatedInFiscalYearBeforeFiscalYearGrossWriteOffs	0	USD
CY2021	mfa	Financing Receivable Originated Two Years Before Latest Fiscal Year Gross Write Offs FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYearGrossWriteOffs	1385000	USD
CY2021	mfa	Financing Receivable Originated Three Years Before Latest Fiscal Year Gross Write Offs FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYearGrossWriteOffs	1338000	USD
CY2021	mfa	Financing Receivable Originated Four Years Before Latest Fiscal Year Gross Write Offs FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYearGrossWriteOffs	123000	USD
CY2021	mfa	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year Gross Write Offs FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYearGrossWriteOffs	527000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3373000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	0	USD
CY2021	mfa	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year Net Write Offs FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYearNetWriteOffs	0	USD
CY2021	mfa	Financing Receivable Originated Two Years Before Latest Fiscal Year Net Write Offs FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYearNetWriteOffs	1385000	USD
CY2021	mfa	Financing Receivable Originated Three Years Before Latest Fiscal Year Net Write Offs FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYearNetWriteOffs	1338000	USD
CY2021	mfa	Financing Receivable Originated Four Years Before Latest Fiscal Year Net Write Offs FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYearNetWriteOffs	123000	USD
CY2020Q4	mfa	Real Estate Held For Investment RealEstateHeldForInvestment	61800000	USD
CY2021	mfa	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year Net Write Offs FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYearNetWriteOffs	527000	USD
CY2021	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	3373000	USD
CY2021	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	16243000	USD
CY2020	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	17204000	USD
CY2019	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	47849000	USD
CY2021	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Realized Gains And Other Income Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsRealizedGainsAndOtherIncomeReceived	493000	USD
CY2020	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Realized Gains And Other Income Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsRealizedGainsAndOtherIncomeReceived	3561000	USD
CY2019	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Realized Gains And Other Income Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsRealizedGainsAndOtherIncomeReceived	-3700000	USD
CY2021	mfa	Mortgage Loans On Real Estate Gain Loss On Loans At Fair Value MortgageLoansOnRealEstateGainLossOnLoansAtFairValue	16736000	USD
CY2020	mfa	Mortgage Loans On Real Estate Gain Loss On Loans At Fair Value MortgageLoansOnRealEstateGainLossOnLoansAtFairValue	20765000	USD
CY2019	mfa	Mortgage Loans On Real Estate Gain Loss On Loans At Fair Value MortgageLoansOnRealEstateGainLossOnLoansAtFairValue	44149000	USD
CY2021	mfa	Mortgage Backed Securities Period Of Fixed Rate Mortgages Minimum MortgageBackedSecuritiesPeriodOfFixedRateMortgagesMinimum	P15Y
CY2021	mfa	Mortgage Backed Securities Period Of Fixed Rate Mortgages Maximum MortgageBackedSecuritiesPeriodOfFixedRateMortgagesMaximum	P30Y
CY2021	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	0	USD
CY2021	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	0	USD
CY2020	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	3062858000	USD
CY2020	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	61697000	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	908696000	USD
CY2019	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	62002000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	46833000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	79607000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	392722000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	417167000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	389127000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	44600000	USD
CY2021	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	0	USD
CY2020	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	344269000	USD
CY2019	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	180000	USD
CY2021	mfa	Other Comprehensive Income Loss Available For Sale Securities Adjustment Excluding Cumulative Effect Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentExcludingCumulativeEffectNetOfTaxPortionAttributableToParent	-32774000	USD
CY2020	mfa	Other Comprehensive Income Loss Available For Sale Securities Adjustment Excluding Cumulative Effect Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentExcludingCumulativeEffectNetOfTaxPortionAttributableToParent	-313115000	USD
CY2019	mfa	Other Comprehensive Income Loss Available For Sale Securities Adjustment Excluding Cumulative Effect Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentExcludingCumulativeEffectNetOfTaxPortionAttributableToParent	-24445000	USD
CY2021Q4	mfa	Principal Receivable Advances Suspense Accounts And Other PrincipalReceivableAdvancesSuspenseAccountsAndOther	34191000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	79607000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	392722000	USD
CY2021Q4	us-gaap	Real Estate Investments RealEstateInvestments	156223000	USD
CY2020Q4	us-gaap	Real Estate Investments RealEstateInvestments	249699000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	61076000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	0	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	21400000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	0	USD
CY2021Q4	mfa	Capital Contributions To Loan Origination Partners CapitalContributionsToLoanOriginationPartners	71673000	USD
CY2020Q4	mfa	Capital Contributions To Loan Origination Partners CapitalContributionsToLoanOriginationPartners	47148000	USD
CY2021Q4	us-gaap	Other Interest Earning Assets OtherInterestEarningAssets	57522000	USD
CY2020Q4	us-gaap	Other Interest Earning Assets OtherInterestEarningAssets	0	USD
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	50191000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	38850000	USD
CY2020Q4	mfa	Principal Receivable Advances Suspense Accounts And Other PrincipalReceivableAdvancesSuspenseAccountsAndOther	16682000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	39370000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	758000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	73910000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	32244000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	565556000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	6600000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Discount Rate LesseeOperatingLeaseDiscountRate	0.075
CY2021Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	553	property
CY2020Q4	us-gaap	Other Assets OtherAssets	385381000	USD
CY2021Q4	mfa	Real Estate Held For Investment RealEstateHeldForInvestment	11300000	USD
CY2021Q4	us-gaap	Real Estate Investments RealEstateInvestments	156200000	USD
CY2020Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	946	property
CY2020Q4	us-gaap	Real Estate Investments RealEstateInvestments	249700000	USD
CY2021Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	155200000	USD
CY2020Q4	us-gaap	Real Estate Investments RealEstateInvestments	249699000	USD
CY2019Q4	us-gaap	Real Estate Investments RealEstateInvestments	411659000	USD
CY2021	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	4772000	USD
CY2020	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	12570000	USD
CY2021	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	72304000	USD
CY2020	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	96766000	USD
CY2021	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	2458000	USD
CY2020	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	10198000	USD
CY2021	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	163466000	USD
CY2020	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	256354000	USD
CY2021Q4	us-gaap	Real Estate Investments RealEstateInvestments	156223000	USD
CY2020Q4	us-gaap	Real Estate Investments RealEstateInvestments	249699000	USD
CY2021Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	553	property
CY2020Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	946	property
CY2021	mfa	Gain Loss Recorded On Transfer From Residential Whole Loans To Real Estate Owned GainLossRecordedOnTransferFromResidentialWholeLoansToRealEstateOwned	-700000	USD
CY2020	mfa	Gain Loss Recorded On Transfer From Residential Whole Loans To Real Estate Owned GainLossRecordedOnTransferFromResidentialWholeLoansToRealEstateOwned	5100000	USD
CY2021	mfa	Number Of Real Estate Properties Sold During Period NumberOfRealEstatePropertiesSoldDuringPeriod	647	property
CY2021	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	187900000	USD
CY2021	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	23500000	USD
CY2020	mfa	Number Of Real Estate Properties Sold During Period NumberOfRealEstatePropertiesSoldDuringPeriod	1086	property
CY2020	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	274100000	USD
CY2020	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	15100000	USD
CY2021Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	900000000	USD
CY2021	us-gaap	Derivative Average Remaining Maturity1 DerivativeAverageRemainingMaturity1	P48M
CY2021	us-gaap	Derivative Remaining Maturity1 DerivativeRemainingMaturity1	P60M
CY2020Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	0	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
CY2021	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	0	USD
CY2020	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-50127000	USD
CY2019	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-23342000	USD
CY2021	mfa	Other Comprehensive Income Loss Amortization Of De Designated Hedging Instruments After Reclassification And Tax OtherComprehensiveIncomeLossAmortizationOfDeDesignatedHedgingInstrumentsAfterReclassificationAndTax	0	USD
CY2020	mfa	Other Comprehensive Income Loss Amortization Of De Designated Hedging Instruments After Reclassification And Tax OtherComprehensiveIncomeLossAmortizationOfDeDesignatedHedgingInstrumentsAfterReclassificationAndTax	72802000	USD
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CY2021Q4	mfa	Financing Agreements Fair Value And Carrying Value FinancingAgreementsFairValueAndCarryingValue	6378782000	USD
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CY2020Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Repurchase Agreements At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForRepurchaseAgreementsAtFairValue	5799786000	USD
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CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	142100000	USD
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CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2001000	USD
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CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2001000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	499000	USD
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CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	3000000	USD
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CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5334000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5353000	USD
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CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	4552000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	49604000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	74853000	USD
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CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	47800000	USD
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CY2020Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	250000000	USD
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CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	85600000	USD
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CY2020	mfa	Payments For Fees Related To Repurchase Of Shares PaymentsForFeesRelatedToRepurchaseOfShares	141000	USD
CY2020	mfa	Stock Repurchase Program Warrants Repurchased During Period Shares StockRepurchaseProgramWarrantsRepurchasedDuringPeriodShares	17593576	shares
CY2020Q4	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	33700000	USD
CY2021Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	80300000	USD
CY2019	mfa	Stock Repurchase Program Stock Repurchased And Retired During Period Shares StockRepurchaseProgramStockRepurchasedAndRetiredDuringPeriodShares	0	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 Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	495000000	USD
CY2020Q2	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	481000000	USD
CY2020Q2	us-gaap	Proceeds From Issuance Of Warrants ProceedsFromIssuanceOfWarrants	14000000	USD
CY2020Q4	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	33700000	USD
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CY2021	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-31715000	USD
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CY2019	us-gaap	Net Income Loss NetIncomeLoss	378117000	USD
CY2021	us-gaap	Dividends Preferred Stock DividendsPreferredStock	32875000	USD
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CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	294951000	USD
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CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.67
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CY2021	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Diluted UndistributedEarningsLossAvailableToCommonShareholdersDiluted	1044000	USD
CY2020	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Diluted UndistributedEarningsLossAvailableToCommonShareholdersDiluted	0	USD
CY2019	us-gaap	Undistributed Earnings Loss Available To Common Shareholders Diluted UndistributedEarningsLossAvailableToCommonShareholdersDiluted	0	USD
CY2021	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	15668000	USD
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CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	370995000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	442816000	shares
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CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2130000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	28920000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	0	shares
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CY2020Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1616901000	USD
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CY2021Q4	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	72300000	USD
CY2020Q4	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	96800000	USD
CY2021Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loans And Other Loans At Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansAndOtherLoansAtCarryingValue	7900000000	USD
CY2020Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loans And Other Loans At Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansAndOtherLoansAtCarryingValue	5300000000	USD
CY2021	mfa	Mortgage Loans On Real Estate Amortization Discount Accretion Net MortgageLoansOnRealEstateAmortizationDiscountAccretionNet	14273000	USD
CY2021	dei	Auditor Name AuditorName	KPMG LLP
CY2021	dei	Auditor Location AuditorLocation	New York, New York
CY2021	dei	Auditor Firm AuditorFirmId	185

Files In Submission

Name	View Source	Status
0001055160-22-000005-index-headers.html	Edgar Link	pending
0001055160-22-000005-index.html	Edgar Link	pending
0001055160-22-000005.txt	Edgar Link	pending
0001055160-22-000005-xbrl.zip	Edgar Link	pending
exhibit21subsidiariesofthe.htm	Edgar Link	pending
exhibit231consentofkpmg123.htm	Edgar Link	pending
exhibit311certificationofc.htm	Edgar Link	pending
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$MFA
MFA FINANCIAL, INC. Stock $mfa

2021 Q4 Form 10-K Financial Statement

#000105516022000005 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA MFA FINANCIAL, INC. Stock $mfa

2021 Q4 Form 10-K Financial Statement

#000105516022000005 Filed on February 23, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA
MFA FINANCIAL, INC. Stock $mfa