$MFA
MFA FINANCIAL, INC. Stock $mfa

$mfa Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000105516019000021 Filed on August 07, 2019

Income Statement

Concept	2019 Q2	2018 Q2
Revenue	$144.9M	$101.7M
YoY Change	42.45%	-7.63%
Cost Of Revenue	$85.00M	$51.80M
YoY Change	64.09%	5.71%
Gross Profit	$116.8M	$90.90M
YoY Change	28.49%	-7.34%
Gross Profit Margin	80.59%	89.34%
Selling, General & Admin	$13.80M	$12.60M
YoY Change	9.52%	-5.26%
% of Gross Profit	11.82%	13.86%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$700.0K	$400.0K
YoY Change	75.0%	100.0%
% of Gross Profit	0.6%	0.44%
Operating Expenses	$23.80M	$20.60M
YoY Change	15.53%	17.05%
Operating Profit	$93.00M	$70.30M
YoY Change	32.29%	-12.67%
Interest Expense	$85.04M	$51.81M
YoY Change	64.15%	5.69%
% of Operating Profit	91.45%	73.7%
Other Income/Expense, Net
YoY Change
Pretax Income	$93.00M	$70.40M
YoY Change	32.1%	-11.89%
Income Tax
% Of Pretax Income
Net Earnings	$93.04M	$70.40M
YoY Change	32.17%	-11.93%
Net Earnings / Revenue	64.19%	69.19%
Basic Earnings Per Share	$0.20	$0.17
Diluted Earnings Per Share	$0.20	$0.17
COMMON SHARES
Basic Shares Outstanding	450.5M shares	398.5M shares
Diluted Shares Outstanding	459.4M shares	398.5M shares

Balance Sheet

Concept	2019 Q2	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$89.00M	$55.00M
YoY Change	61.82%	-92.62%
Cash & Equivalents	$88.70M	$54.88M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$89.00M	$55.00M
YoY Change	61.82%	-92.62%
LONG-TERM ASSETS
Property, Plant & Equipment
YoY Change
Goodwill	$7.200M	$7.200M
YoY Change	0.0%	0.15%
Intangibles
YoY Change
Long-Term Investments	$12.48B	$9.968B
YoY Change	25.21%	-4.99%
Other Assets	$31.00M	$3.000M
YoY Change	933.33%	-75.0%
Total Long-Term Assets	$13.12B	$10.59B
YoY Change	23.88%	-1.87%
TOTAL ASSETS
Total Short-Term Assets	$89.00M	$55.00M
Total Long-Term Assets	$13.12B	$10.59B
Total Assets	$13.21B	$10.64B
YoY Change	24.08%	-7.73%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$49.00M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$8.631B	$5.892B
YoY Change	46.49%	-16.32%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$8.770B	$5.892B
YoY Change	48.85%	-16.32%
LONG-TERM LIABILITIES
Long-Term Debt	$1.035B	$0.00
YoY Change		-100.0%
Other Long-Term Liabilities		$1.546B
YoY Change		37.42%
Total Long-Term Liabilities	$1.035B	$1.546B
YoY Change	-33.05%	26.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$8.770B	$5.892B
Total Long-Term Liabilities	$1.035B	$1.546B
Total Liabilities	$9.805B	$7.438B
YoY Change	31.82%	-9.97%
SHAREHOLDERS EQUITY
Retained Earnings	-$638.4M	-$592.2M
YoY Change	7.8%	2.73%
Common Stock	$4.506M	$3.985M
YoY Change	13.07%	0.56%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$3.403B	$3.207B
YoY Change
Total Liabilities & Shareholders Equity	$13.21B	$10.64B
YoY Change	24.08%	-7.73%

Cashflow Statement

Concept	2019 Q2	2018 Q2
OPERATING ACTIVITIES
Net Income	$93.04M	$70.40M
YoY Change	32.17%	-11.93%
Depreciation, Depletion And Amortization	$700.0K	$400.0K
YoY Change	75.0%	100.0%
Cash From Operating Activities	$48.80M	$37.90M
YoY Change	28.76%	-29.68%
INVESTING ACTIVITIES
Capital Expenditures	-$600.0K	-$400.0K
YoY Change	50.0%	100.0%
Acquisitions
YoY Change
Other Investing Activities	-$240.2M	$383.2M
YoY Change	-162.68%	-65.8%
Cash From Investing Activities	-$240.9M	$382.8M
YoY Change	-162.93%	-65.83%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	193.2M	-584.3M
YoY Change	-133.07%	-31.21%
NET CHANGE
Cash From Operating Activities	48.80M	37.90M
Cash From Investing Activities	-240.9M	382.8M
Cash From Financing Activities	193.2M	-584.3M
Net Change In Cash	1.100M	-163.6M
YoY Change	-100.67%	-150.37%
FREE CASH FLOW
Cash From Operating Activities	$48.80M	$37.90M
Capital Expenditures	-$600.0K	-$400.0K
Free Cash Flow	$49.40M	$38.30M
YoY Change	28.98%	-29.21%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0001055160
	mfa	Mortgage Backed Securities Period Of Fixed Rate Mortgages Minimum MortgageBackedSecuritiesPeriodOfFixedRateMortgagesMinimum	P15Y
	mfa	Mortgage Backed Securities Periodof Fixed Rate Mortgages Maximum MortgageBackedSecuritiesPeriodofFixedRateMortgagesMaximum	P30Y
CY2018Q4	mfa	Servicing Rights Pledged As Collateral ServicingRightsPledgedAsCollateral	611807000	USD
CY2019Q2	mfa	Servicing Rights Pledged As Collateral ServicingRightsPledgedAsCollateral	1169872000	USD
CY2019Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2400000	shares
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q2	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	886950000	shares
CY2019Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	886950000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	449787000	shares
CY2019Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	450622000	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	449787000	shares
CY2019Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	450622000	shares
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	7200000	USD
CY2018Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	1645372000	USD
CY2019Q2	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	2814259000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	0	USD
CY2018Q4	us-gaap	Pledged Assets Separately Reported Loans Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedLoansPledgedAsCollateralAtFairValue	738638000	USD
CY2019Q2	us-gaap	Pledged Assets Separately Reported Loans Pledged As Collateral At Fair Value PledgedAssetsSeparatelyReportedLoansPledgedAsCollateralAtFairValue	777087000	USD
CY2018	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.075
	us-gaap	Preferred Stock Dividend Rate Percentage PreferredStockDividendRatePercentage	0.075
CY2018Q4	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	200000000	USD
CY2019Q2	us-gaap	Preferred Stock Liquidation Preference Value PreferredStockLiquidationPreferenceValue	200000000	USD
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2019Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	8050000	shares
CY2019Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	8050000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	8000000	shares
CY2019Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	8000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	8000000	shares
CY2019Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	8000000	shares
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0	shares
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-06-30
	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
CY2019Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	450701064	shares
CY2019Q2	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	4391983000	USD
CY2018Q4	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	3016715000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue	1525814000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue	1665978000	USD
CY2019Q2	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	1169872000	USD
CY2018Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	611807000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	88661000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	51965000	USD
CY2019Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	31056000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	36744000	USD
CY2019Q2	us-gaap	Other Assets OtherAssets	607745000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	527785000	USD
CY2019Q2	us-gaap	Assets Assets	13208092000	USD
CY2018Q4	us-gaap	Assets Assets	12420327000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8630642000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	7879087000	USD
CY2019Q2	us-gaap	Other Liabilities OtherLiabilities	1174077000	USD
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	1125139000	USD
CY2019Q2	us-gaap	Liabilities Liabilities	9804719000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	9004226000	USD
CY2019Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q2	us-gaap	Preferred Stock Value PreferredStockValue	80000	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	80000	USD
CY2019Q2	us-gaap	Common Stock Value CommonStockValue	4506000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	4498000	USD
CY2019Q2	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3625399000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3623275000	USD
CY2019Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-638396000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-632040000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	411784000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	420288000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	3403373000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	3416101000	USD
CY2019Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	13208092000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	12420327000	USD
CY2019Q2	us-gaap	Interest And Fee Income Loans Commercial And Residential Real Estate InterestAndFeeIncomeLoansCommercialAndResidentialRealEstate	57879000	USD
CY2018Q2	us-gaap	Interest And Fee Income Loans Commercial And Residential Real Estate InterestAndFeeIncomeLoansCommercialAndResidentialRealEstate	17935000	USD
	us-gaap	Interest And Fee Income Loans Commercial And Residential Real Estate InterestAndFeeIncomeLoansCommercialAndResidentialRealEstate	107499000	USD
	us-gaap	Interest And Fee Income Loans Commercial And Residential Real Estate InterestAndFeeIncomeLoansCommercialAndResidentialRealEstate	32264000	USD
CY2019Q2	us-gaap	Interest Income Other InterestIncomeOther	12338000	USD
CY2018Q2	us-gaap	Interest Income Other InterestIncomeOther	6219000	USD
	us-gaap	Interest Income Other InterestIncomeOther	22958000	USD
	us-gaap	Interest Income Other InterestIncomeOther	13842000	USD
CY2019Q2	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1036000	USD
CY2018Q2	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	685000	USD
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1800000	USD
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1594000	USD
CY2019Q2	us-gaap	Other Operating Income OtherOperatingIncome	1287000	USD
CY2018Q2	us-gaap	Other Operating Income OtherOperatingIncome	0	USD
	us-gaap	Other Operating Income OtherOperatingIncome	2593000	USD
	us-gaap	Other Operating Income OtherOperatingIncome	0	USD
CY2019Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	144935000	USD
CY2018Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	101747000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	285887000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	205499000	USD
CY2019Q2	mfa	Interest Expense Securities Soldunder Agreementsto Repurchaseand Other Advances InterestExpenseSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	75890000	USD
CY2018Q2	mfa	Interest Expense Securities Soldunder Agreementsto Repurchaseand Other Advances InterestExpenseSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	46234000	USD
	mfa	Interest Expense Securities Soldunder Agreementsto Repurchaseand Other Advances InterestExpenseSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	146699000	USD
	mfa	Interest Expense Securities Soldunder Agreementsto Repurchaseand Other Advances InterestExpenseSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	91951000	USD
CY2019Q2	us-gaap	Interest Expense Debt InterestExpenseDebt	9154000	USD
CY2018Q2	us-gaap	Interest Expense Debt InterestExpenseDebt	5576000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	17371000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	10413000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	85044000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	51810000	USD
	us-gaap	Interest Expense InterestExpense	164070000	USD
	us-gaap	Interest Expense InterestExpense	102364000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	59891000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	49937000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	121817000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	103135000	USD
CY2019Q2	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	51473000	USD
CY2018Q2	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	32443000	USD
	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	76740000	USD
	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	70941000	USD
CY2019Q2	us-gaap	Debt Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	7710000	USD
CY2018Q2	us-gaap	Debt Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	7429000	USD
	us-gaap	Debt Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	32319000	USD
	us-gaap	Debt Securities Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairment	16246000	USD
CY2019Q2	mfa	Debt Securities Unrealized Gain Loss Residential Mortgage Securities Measuredat Fair Value DebtSecuritiesUnrealizedGainLossResidentialMortgageSecuritiesMeasuredatFairValue	0	USD
CY2018Q2	mfa	Debt Securities Unrealized Gain Loss Residential Mortgage Securities Measuredat Fair Value DebtSecuritiesUnrealizedGainLossResidentialMortgageSecuritiesMeasuredatFairValue	-2351000	USD
	mfa	Debt Securities Unrealized Gain Loss Residential Mortgage Securities Measuredat Fair Value DebtSecuritiesUnrealizedGainLossResidentialMortgageSecuritiesMeasuredatFairValue	8672000	USD
	mfa	Debt Securities Unrealized Gain Loss Residential Mortgage Securities Measuredat Fair Value DebtSecuritiesUnrealizedGainLossResidentialMortgageSecuritiesMeasuredatFairValue	-3231000	USD
CY2019Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-7394000	USD
CY2018Q2	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	353000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-16338000	USD
	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	353000	USD
CY2019Q2	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	5073000	USD
CY2018Q2	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	3132000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	6638000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	4357000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	56862000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	41006000	USD
	us-gaap	Noninterest Income NoninterestIncome	108031000	USD
	us-gaap	Noninterest Income NoninterestIncome	88666000	USD
CY2019Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7841000	USD
CY2018Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7038000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	16395000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	13786000	USD
CY2019Q2	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	5934000	USD
CY2018Q2	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	5582000	USD
	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	10579000	USD
	us-gaap	Other General And Administrative Expense OtherGeneralAndAdministrativeExpense	9414000	USD
CY2019Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	9938000	USD
CY2018Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	7928000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	20977000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	14811000	USD
CY2019Q2	us-gaap	Costs And Expenses CostsAndExpenses	23713000	USD
CY2018Q2	us-gaap	Costs And Expenses CostsAndExpenses	20548000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	47951000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	38011000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	93040000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	70395000	USD
	us-gaap	Net Income Loss NetIncomeLoss	181897000	USD
	us-gaap	Net Income Loss NetIncomeLoss	153790000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7500000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7500000	USD
CY2019Q2	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	89290000	USD
CY2018Q2	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	66645000	USD
	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	174397000	USD
	mfa	Net Income Loss Availableto Common Stockholders Basicand Participating Securities NetIncomeLossAvailabletoCommonStockholdersBasicandParticipatingSecurities	146290000	USD
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	93040000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	70395000	USD
	us-gaap	Net Income Loss NetIncomeLoss	181897000	USD
	us-gaap	Net Income Loss NetIncomeLoss	153790000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	6371000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	5178000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	21576000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	15458000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-19706000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	7915000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-30151000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	27584000	USD
CY2019Q2	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-743000	USD
CY2018Q2	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	0	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-1084000	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	0	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2812000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-18019000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8504000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-44513000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	90228000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	52376000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	173393000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	109277000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3750000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7500000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	7500000	USD
CY2019Q2	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	86478000	USD
CY2018Q2	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	48626000	USD
	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	165893000	USD
	mfa	Comprehensive Income Loss To Common Stockholders And Participating Securities ComprehensiveIncomeLossToCommonStockholdersAndParticipatingSecurities	101777000	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	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	0	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
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	3261636000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	295000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	83395000	USD
CY2018Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1230000	USD
CY2018Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1957000	USD
CY2018Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	549000	USD
CY2018Q1	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	430000	USD
CY2018Q1	us-gaap	Dividends Common Stock DividendsCommonStock	79686000	USD
CY2018Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
CY2018Q1	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	217000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-46163000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	19669000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	3235431000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	70395000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	481000	USD
CY2018Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	0	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2255000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Other AdjustmentsToAdditionalPaidInCapitalOther	-230000	USD
CY2018Q2	us-gaap	Dividends Common Stock DividendsCommonStock	79706000	USD
CY2018Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
CY2018Q2	mfa	Dividends Dividend Equivalent Rights DividendsDividendEquivalentRights	244000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-25934000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	7915000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	3206613000	USD
	us-gaap	Net Income Loss NetIncomeLoss	181897000	USD
	us-gaap	Net Income Loss NetIncomeLoss	153790000	USD
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	32319000	USD
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	16246000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	3692000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	4673000	USD
	mfa	Gainon Liquidationof Residential Whole Loans GainonLiquidationofResidentialWholeLoans	9661000	USD
	mfa	Gainon Liquidationof Residential Whole Loans GainonLiquidationofResidentialWholeLoans	12742000	USD
	mfa	Accretionof Purchase Discounts AccretionofPurchaseDiscounts	33193000	USD
	mfa	Accretionof Purchase Discounts AccretionofPurchaseDiscounts	40948000	USD
	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	19422000	USD
	mfa	Amortization Of Purchase Premiums AmortizationOfPurchasePremiums	12508000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1084000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	805000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	3436000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	2809000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	20128000	USD
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	18346000	USD
	mfa	Unrealized Losses Gainson Securities Held At Fair Valueand Swaps Not Designatedas Hedges UnrealizedLossesGainsonSecuritiesHeldAtFairValueandSwapsNotDesignatedasHedges	-1363000	USD
	mfa	Unrealized Losses Gainson Securities Held At Fair Valueand Swaps Not Designatedas Hedges UnrealizedLossesGainsonSecuritiesHeldAtFairValueandSwapsNotDesignatedasHedges	592000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	26978000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	22469000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	4716000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-10091000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	85947000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	43805000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	930591000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	1107871000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	404796000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	198392000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	697973000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	323309000	USD
	us-gaap	Payments To Acquire Other Real Estate PaymentsToAcquireOtherRealEstate	10561000	USD
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	1943860000	USD
	us-gaap	Payments To Acquire Loans Held For Investment PaymentsToAcquireLoansHeldForInvestment	943433000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	523600000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	174713000	USD
	mfa	Proceeds From Real Estate Owned ProceedsFromRealEstateOwned	56073000	USD
	mfa	Proceeds From Real Estate Owned ProceedsFromRealEstateOwned	58230000	USD
	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	33316000	USD
	us-gaap	Payments To Acquire Other Real Estate PaymentsToAcquireOtherRealEstate	5282000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1043000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	551000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-738377000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	266631000	USD
	mfa	Principal Paymentson Securities Soldunder Agreementsto Repurchaseand Other Advances PrincipalPaymentsonSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	38068063000	USD
	mfa	Principal Paymentson Securities Soldunder Agreementsto Repurchaseand Other Advances PrincipalPaymentsonSecuritiesSoldunderAgreementstoRepurchaseandOtherAdvances	32054576000	USD
	mfa	Proceedsfrom Securities Soldunder Agreementsto Repurchase ProceedsfromSecuritiesSoldunderAgreementstoRepurchase	38819598000	USD
	mfa	Proceedsfrom Securities Soldunder Agreementsto Repurchase ProceedsfromSecuritiesSoldunderAgreementstoRepurchase	31331949000	USD
	mfa	Proceedsfrom Issuanceof Securitized Debt ProceedsfromIssuanceofSecuritizedDebt	0	USD
	mfa	Proceedsfrom Issuanceof Securitized Debt ProceedsfromIssuanceofSecuritizedDebt	183970000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	57496000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	28639000	USD
	mfa	Payments Madefor Securitization Related Cost PaymentsMadeforSecuritizationRelatedCost	0	USD
	mfa	Payments Madefor Securitization Related Cost PaymentsMadeforSecuritizationRelatedCost	956000	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	223444000	USD
	us-gaap	Proceeds From Convertible Debt ProceedsFromConvertibleDebt	0	USD
	mfa	Payments Made For Margin Calls On Repurchase Agreements And Derivatives PaymentsMadeForMarginCallsOnRepurchaseAgreementsAndDerivatives	47131000	USD
	mfa	Proceeds From Margin Calls On Repurchase Agreements And Derivatives ProceedsFromMarginCallsOnRepurchaseAgreementsAndDerivatives	0	USD
	mfa	Proceeds From Margin Calls On Repurchase Agreements And Derivatives ProceedsFromMarginCallsOnRepurchaseAgreementsAndDerivatives	51711000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1137000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1711000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	7500000	USD
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	7500000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	180551000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	159676000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	683438000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-715322000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	31008000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-404886000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	88709000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	463743000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	119717000	USD
CY2018Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	58857000	USD
	us-gaap	Interest Paid Net InterestPaidNet	169852000	USD
	us-gaap	Interest Paid Net InterestPaidNet	103187000	USD
	mfa	Securities Obtained As Collateral Net Of Returns SecuritiesObtainedAsCollateralNetOfReturns	0	USD
	mfa	Securities Obtained As Collateral Net Of Returns SecuritiesObtainedAsCollateralNetOfReturns	-248650000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	131644000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	103521000	USD
CY2019Q2	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	90400000	USD
CY2018Q2	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	79948000	USD
	mfa	Noncash Payablefor Unsettled Loan Purchases NoncashPayableforUnsettledLoanPurchases	86987000	USD
	mfa	Noncash Payablefor Unsettled Loan Purchases NoncashPayableforUnsettledLoanPurchases	567915000	USD
	us-gaap	Nature Of Operations NatureOfOperations	<span style="font-family:inherit;font-size:10pt;font-weight:bold;">Organization</span><span style="font-family:inherit;font-size:10pt;font-weight:bold;"> </span><div style="line-height:120%;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"> </span></div><div style="line-height:120%;text-align:justify;text-indent:29px;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">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 a taxable REIT subsidiary (“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 </span><span style="font-family:inherit;font-size:10pt;">2</span><span style="font-family:inherit;font-size:10pt;">(</span><span style="font-family:inherit;font-size:10pt;font-style:normal;">o</span><span style="font-family:inherit;font-size:10pt;">))</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	Number Of Days Considered To Classify Loans Delinquent NumberOfDaysConsideredToClassifyLoansDelinquent	P60D
	mfa	Ratio Loan To Value RatioLoanToValue	0.80
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	88700000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	52000000.0	USD
CY2019Q2	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	74400000	USD
CY2018Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	30000000.0	USD
CY2019Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	31100000	USD
CY2018Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	36700000	USD
CY2019Q2	us-gaap	Goodwill Goodwill	7200000	USD
	mfa	Repurchase Agreements Financing Period Low End Of Range RepurchaseAgreementsFinancingPeriodLowEndOfRange	P1M
	mfa	Repurchase Agreements Financing Period High End Of Range RepurchaseAgreementsFinancingPeriodHighEndOfRange	P6M
	mfa	Percentage Of Annual Reit Taxable Income Distributed To Stockholders PercentageOfAnnualREITTaxableIncomeDistributedToStockholders	1
	mfa	Percentage Of Annual Reit Taxable Income Distributed To Stockholders PercentageOfAnnualREITTaxableIncomeDistributedToStockholders	1
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-24300000	USD
CY2019Q2	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	5448848000	USD
CY2019Q2	mfa	Available For Sale Securities Purchase Premiums AvailableForSaleSecuritiesPurchasePremiums	91977000	USD
CY2019Q2	mfa	Available For Sale Securities Accretable Purchase Discounts AvailableForSaleSecuritiesAccretablePurchaseDiscounts	117823000	USD
CY2019Q2	mfa	Available For Sale Securities Discount Designated As Credit Reserve And Other Than Temporary Impairments AvailableForSaleSecuritiesDiscountDesignatedAsCreditReserveAndOtherThanTemporaryImpairments	479566000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	4944118000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	472609000	USD
CY2019Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	23766000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Loss Before Tax DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax	448843000	USD
CY2019Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	5392961000	USD
CY2018Q4	us-gaap	Investment Owned Balance Principal Amount InvestmentOwnedBalancePrincipalAmount	6646178000	USD
CY2018Q4	mfa	Available For Sale Securities Purchase Premiums AvailableForSaleSecuritiesPurchasePremiums	112369000	USD
CY2018Q4	mfa	Available For Sale Securities Accretable Purchase Discounts AvailableForSaleSecuritiesAccretablePurchaseDiscounts	154942000	USD
CY2018Q4	mfa	Available For Sale Securities Discount Designated As Credit Reserve And Other Than Temporary Impairments AvailableForSaleSecuritiesDiscountDesignatedAsCreditReserveAndOtherThanTemporaryImpairments	516116000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	6088525000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	484591000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	63783000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Accumulated Gross Unrealized Gain Loss Before Tax DebtSecuritiesAvailableForSaleAccumulatedGrossUnrealizedGainLossBeforeTax	420808000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	6509333000	USD
CY2019Q2	mfa	Available For Sale Securities Principal Payments Receivable AvailableForSaleSecuritiesPrincipalPaymentsReceivable	682000	USD
CY2018Q4	mfa	Available For Sale Securities Principal Payments Receivable AvailableForSaleSecuritiesPrincipalPaymentsReceivable	1000000.0	USD
CY2019Q2	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	195333000	USD
CY2019Q2	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	7710000	USD
CY2018Q2	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	179328000	USD
CY2018Q2	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	7429000	USD
	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	404796000	USD
	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	32319000	USD
	us-gaap	Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale	198690000	USD
	us-gaap	Gain Loss On Sales Of Mortgage Backed Securities Mbs GainLossOnSalesOfMortgageBackedSecuritiesMBS	16246000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	152214000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	912000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	52	security
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1018360000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	22854000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	390	security
CY2019Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1170574000	USD
CY2019Q2	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	23766000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Writedown Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax	0	USD
CY2019Q1	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	39596000	USD
CY2018Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	39596000	USD
CY2019Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions No Previous Impairment OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsNoPreviousImpairment	0	USD
CY2019Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Additions Additional Credit Losses OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses	0	USD
CY2019Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	39596000	USD
CY2019Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	39596000	USD
CY2019Q1	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	422261000	USD
CY2018Q1	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	574485000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	417167000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	620648000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	6371000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	5178000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	21576000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	15458000	USD
CY2019Q2	mfa	Other Comprehensive Income Loss Availableforsale Securities Adjustment Excluding Cumulative Effect Netof Tax Portion Attributableto Parent OtherComprehensiveIncomeLossAvailableforsaleSecuritiesAdjustmentExcludingCumulativeEffectNetofTaxPortionAttributabletoParent	17637000	USD
CY2018Q2	mfa	Other Comprehensive Income Loss Availableforsale Securities Adjustment Excluding Cumulative Effect Netof Tax Portion Attributableto Parent OtherComprehensiveIncomeLossAvailableforsaleSecuritiesAdjustmentExcludingCumulativeEffectNetofTaxPortionAttributabletoParent	-25934000	USD
	mfa	Other Comprehensive Income Loss Availableforsale Securities Adjustment Excluding Cumulative Effect Netof Tax Portion Attributableto Parent OtherComprehensiveIncomeLossAvailableforsaleSecuritiesAdjustmentExcludingCumulativeEffectNetofTaxPortionAttributabletoParent	22731000	USD
	mfa	Other Comprehensive Income Loss Availableforsale Securities Adjustment Excluding Cumulative Effect Netof Tax Portion Attributableto Parent OtherComprehensiveIncomeLossAvailableforsaleSecuritiesAdjustmentExcludingCumulativeEffectNetofTaxPortionAttributabletoParent	-72097000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	439898000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	548551000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	439898000	USD
CY2018Q2	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	548551000	USD
CY2019Q2	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	5900000000	USD
CY2018Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	4700000000	USD
CY2019Q2	mfa	Purchased Performing Loans PurchasedPerformingLoans	3646329000	USD
CY2018Q4	mfa	Purchased Performing Loans PurchasedPerformingLoans	2218728000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	745654000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Carrying Amount Net CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesCarryingAmountNet	797987000	USD
CY2019Q2	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	4391983000	USD
CY2018Q4	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	3016715000	USD
CY2019Q2	mfa	Residential Whole Loans ResidentialWholeLoans	14091	loan
CY2018Q4	mfa	Residential Whole Loans ResidentialWholeLoans	11149	loan
CY2019Q1	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	398958000	USD
CY2018Q1	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	413404000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	415330000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	421872000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	10997000	USD
CY2018Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	10910000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	22396000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	21941000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	11808000	USD
CY2018Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	12840000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	22296000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Disposals Of Loans CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans	15010000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	111000	USD
CY2018Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	11421000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	5626000	USD
	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications To From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference	16154000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	376264000	USD
CY2018Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	401075000	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	376264000	USD
CY2018Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	401075000	USD
CY2018Q2	mfa	Purchase Credit Impaired Loans Purchase Transaction Committed In Previous Period Closedin Subsequent Period PurchaseCreditImpairedLoansPurchaseTransactionCommittedInPreviousPeriodClosedinSubsequentPeriod	57600000	USD
CY2019Q2	mfa	Certain Loans Acquiredin Transfer Not Accountedforas Debt Securities Acquired During Periodat Acquisitionat Fair Value Excluding Unsettled Loans CertainLoansAcquiredinTransferNotAccountedforasDebtSecuritiesAcquiredDuringPeriodatAcquisitionatFairValueExcludingUnsettledLoans	1438827000	USD
CY2018Q4	mfa	Certain Loans Acquiredin Transfer Not Accountedforas Debt Securities Acquired During Periodat Acquisitionat Fair Value Excluding Unsettled Loans CertainLoansAcquiredinTransferNotAccountedforasDebtSecuritiesAcquiredDuringPeriodatAcquisitionatFairValueExcludingUnsettledLoans	1471262000	USD
CY2019Q2	mfa	Residential Whole Loans Heldat Fair Value Excluded Purchase Transaction Not Yet Closed ResidentialWholeLoansHeldatFairValueExcludedPurchaseTransactionNotYetClosed	87000000.0	USD
CY2019Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsReceived	21411000	USD
CY2018Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsReceived	19002000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsReceived	40884000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Coupon Payments Received ResidentialWholeLoansFairValueNetIncomeLossCouponPaymentsReceived	34400000	USD
CY2019Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	21188000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Payoffor Liquidationof Loans ResidentialWholeLoansFairValueNetIncomeLossGainLossonPayofforLiquidationofLoans	4879000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Payoffor Liquidationof Loans ResidentialWholeLoansFairValueNetIncomeLossGainLossonPayofforLiquidationofLoans	6952000	USD
CY2018Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Payoffor Liquidationof Loans ResidentialWholeLoansFairValueNetIncomeLossGainLossonPayofforLiquidationofLoans	4044000	USD
CY2018Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	4599000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	20128000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Unrealized Gains Losses Net ResidentialWholeLoansFairValueNetIncomeLossUnrealizedGainsLossesNet	18346000	USD
CY2019Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Payoffor Liquidationof Loans ResidentialWholeLoansFairValueNetIncomeLossGainLossonPayofforLiquidationofLoans	2596000	USD
CY2018Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Transfersto Reo ResidentialWholeLoansFairValueNetIncomeLossGainLossonTransferstoREO	4798000	USD
CY2019Q2	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Transfersto Reo ResidentialWholeLoansFairValueNetIncomeLossGainLossonTransferstoREO	6278000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Transfersto Reo ResidentialWholeLoansFairValueNetIncomeLossGainLossonTransferstoREO	10849000	USD
	mfa	Residential Whole Loans Fair Value Net Income Loss Gain Losson Transfersto Reo ResidentialWholeLoansFairValueNetIncomeLossGainLossonTransferstoREO	11243000	USD
CY2019Q2	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	51473000	USD
CY2018Q2	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	32443000	USD
	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	76740000	USD
	mfa	Mortgage Loanson Real Estate Gain Losson Loansat Fair Value MortgageLoansonRealEstateGainLossonLoansatFairValue	70941000	USD
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334069000	USD
CY2018Q4	us-gaap	Real Estate Investments RealEstateInvestments	249413000	USD
CY2019Q2	us-gaap	Interest Receivable And Other Assets InterestReceivableAndOtherAssets	98027000	USD
CY2018Q4	us-gaap	Interest Receivable And Other Assets InterestReceivableAndOtherAssets	130964000	USD
CY2019Q2	us-gaap	Other Interest Earning Assets OtherInterestEarningAssets	103446000	USD
CY2018Q4	us-gaap	Other Interest Earning Assets OtherInterestEarningAssets	92022000	USD
CY2019Q2	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	72203000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	55386000	USD
CY2019Q2	us-gaap	Other Assets OtherAssets	607745000	USD
CY2018Q4	us-gaap	Other Assets OtherAssets	527785000	USD
CY2019Q2	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1362	property
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334100000	USD
CY2018Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1093	property
CY2018Q4	us-gaap	Real Estate Investments RealEstateInvestments	249400000	USD
CY2019Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	328000000.0	USD
CY2019Q1	us-gaap	Real Estate Investments RealEstateInvestments	290587000	USD
CY2018Q1	us-gaap	Real Estate Investments RealEstateInvestments	182940000	USD
CY2018Q4	us-gaap	Real Estate Investments RealEstateInvestments	249413000	USD
CY2017Q4	us-gaap	Real Estate Investments RealEstateInvestments	152356000	USD
CY2019Q2	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	1315000	USD
CY2018Q2	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	4121000	USD
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	5388000	USD
	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	7536000	USD
CY2019Q2	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	66483000	USD
CY2018Q2	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	48699000	USD
CY2018Q2	us-gaap	Real Estate Investments RealEstateInvestments	192162000	USD
CY2019Q2	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1362	property
CY2018Q2	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	884	property
CY2019Q2	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	1362	property
CY2018Q2	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	884	property
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	131644000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	103521000	USD
CY2019Q2	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	5274000	USD
CY2018Q2	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	2604000	USD
	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	11197000	USD
	mfa	Real Estate Investments Additions RealEstateInvestmentsAdditions	5282000	USD
CY2019Q2	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	26960000	USD
CY2018Q2	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	37960000	USD
	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	52797000	USD
	mfa	Real Estate Investments Disposals RealEstateInvestmentsDisposals	61461000	USD
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334069000	USD
CY2018Q2	us-gaap	Real Estate Investments RealEstateInvestments	192162000	USD
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334069000	USD
CY2019Q2	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	6500000	USD
CY2018Q2	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	5300000	USD
	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	11300000	USD
	mfa	Gainrecordedontransferfromresidentialwholeloanstorealestateowned Gainrecordedontransferfromresidentialwholeloanstorealestateowned	11700000	USD
CY2019Q2	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	152	property
	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	289	property
CY2019Q2	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	29200000	USD
	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	57000000.0	USD
CY2019Q2	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	2300000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	3700000	USD
CY2018Q2	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	212	property
	mfa	Numberof Real Estate Properties Sold During Period NumberofRealEstatePropertiesSoldDuringPeriod	380	property
CY2018Q2	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	40600000	USD
	us-gaap	Proceeds From Sale Of Real Estate ProceedsFromSaleOfRealEstate	66100000	USD
CY2018Q2	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	2700000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	4700000	USD
CY2019Q1	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-7665000	USD
CY2018Q1	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	8245000	USD
CY2018Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	3121000	USD
CY2017Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-11424000	USD
CY2019Q2	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-19706000	USD
CY2018Q2	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	7915000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-30151000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	27584000	USD
CY2019Q2	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-743000	USD
CY2018Q2	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	0	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	-1084000	USD
	mfa	Other Comprehensive Income Loss Amortizationof De Designated Hedging Instrumentsafter Reclassificationand Tax OtherComprehensiveIncomeLossAmortizationofDeDesignatedHedgingInstrumentsafterReclassificationandTax	0	USD
CY2019Q2	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-28114000	USD
CY2018Q2	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	16160000	USD
CY2019Q2	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-28114000	USD
CY2018Q2	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	16160000	USD
CY2019Q2	mfa	Securities Sold Under Agreements To Repurchase Subject To Termination SecuritiesSoldUnderAgreementsToRepurchaseSubjectToTermination	1400000000	USD
	mfa	Securities Sold Under Agreements To Repurchase Subject To Termination Notice Period SecuritiesSoldUnderAgreementsToRepurchaseSubjectToTerminationNoticePeriod	P6M
CY2019Q2	mfa	Repurchase Agreements Number Of Counterparties RepurchaseAgreementsNumberOfCounterparties	28	counterparty
CY2018Q4	mfa	Repurchase Agreements Number Of Counterparties RepurchaseAgreementsNumberOfCounterparties	26	counterparty
CY2019Q2	mfa	Repurchase Agreement Counterparty Risk As Percentage Of Stockholders Equity RepurchaseAgreementCounterpartyRiskAsPercentageOfStockholdersEquity	0.05
CY2019Q2	us-gaap	Pledged Assets Separately Reported Securities Pledged For Repurchase Agreements At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForRepurchaseAgreementsAtFairValue	10500000000	USD
CY2018Q4	us-gaap	Pledged Assets Separately Reported Securities Pledged For Repurchase Agreements At Fair Value PledgedAssetsSeparatelyReportedSecuritiesPledgedForRepurchaseAgreementsAtFairValue	9500000000	USD
CY2019Q2	mfa	Pledged Financial Instruments Not Separately Reported Securities Pledged Aggregate Fair Value And Accrued Interest PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedAggregateFairValueAndAccruedInterest	44400000	USD
CY2018Q4	mfa	Pledged Financial Instruments Not Separately Reported Securities Pledged Aggregate Fair Value And Accrued Interest PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedAggregateFairValueAndAccruedInterest	33100000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	10500000000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Fair Value Of Collateral SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral	9400000000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	2600000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	2700000	USD
CY2019Q2	us-gaap	Other Secured Financings OtherSecuredFinancings	627487000	USD
CY2018Q4	us-gaap	Other Secured Financings OtherSecuredFinancings	684420000	USD
CY2019Q2	us-gaap	Convertible Debt ConvertibleDebt	223399000	USD
CY2018Q4	us-gaap	Convertible Debt ConvertibleDebt	0	USD
CY2019Q2	us-gaap	Senior Notes SeniorNotes	96838000	USD
CY2018Q4	us-gaap	Senior Notes SeniorNotes	96816000	USD
CY2019Q2	mfa	Dividendsand Dividend Equivalents Payable DividendsandDividendEquivalentsPayable	90400000	USD
CY2018Q4	mfa	Dividendsand Dividend Equivalents Payable DividendsandDividendEquivalentsPayable	90198000	USD
CY2019Q2	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	16865000	USD
CY2018Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	16280000	USD
CY2019Q2	us-gaap	Accounts Payable Other Current And Noncurrent AccountsPayableOtherCurrentAndNoncurrent	86987000	USD
CY2018Q4	us-gaap	Accounts Payable Other Current And Noncurrent AccountsPayableOtherCurrentAndNoncurrent	211129000	USD
CY2019Q2	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	32101000	USD
CY2018Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	26296000	USD
CY2019Q2	us-gaap	Other Liabilities OtherLiabilities	1174077000	USD
CY2018Q4	us-gaap	Other Liabilities OtherLiabilities	1125139000	USD
	mfa	Operating Leases Number Of Operating Leases OperatingLeasesNumberOfOperatingLeases	3	lease
CY2019Q2	mfa	Repurchase Loans Allowance RepurchaseLoansAllowance	0	USD
CY2019Q2	mfa	Unfunded Commitment UnfundedCommitment	100400000	USD
	mfa	Maximum Times Series B Receives No Dividendsin Orderfor Voting Rights MaximumTimesSeriesBReceivesNoDividendsinOrderforVotingRights	6	quarter
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2019Q2	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	90400000	USD
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
CY2019Q2	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	6616355	shares
CY2019Q2	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	4302000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	14156000	USD
CY2019Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	7114000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	22660000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2812000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8504000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-29055000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	15458000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-44513000	USD
CY2019Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	7114000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	22660000	USD
CY2018Q2	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	5178000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	15458000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	0	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxDebtSecurities	224000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	93040000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	70395000	USD
	us-gaap	Net Income Loss NetIncomeLoss	181897000	USD
	us-gaap	Net Income Loss NetIncomeLoss	153790000	USD
CY2019Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
CY2018Q2	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3750000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7500000	USD
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	7500000	USD
CY2019Q2	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	276000	USD
CY2018Q2	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	241000	USD
	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	532000	USD
	mfa	Participating Securities Distributedand Undistributed Earnings Loss Basicand Diluted ParticipatingSecuritiesDistributedandUndistributedEarningsLossBasicandDiluted	460000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	89014000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	66404000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173865000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	145830000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	450538000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	398478000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	450449000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	398398000	shares
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.20
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.36
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	89014000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	66404000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	173865000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	145830000	USD
CY2019Q2	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	1206000	USD
CY2018Q2	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	1206000	USD
	us-gaap	Interest On Convertible Debt Net Of Tax InterestOnConvertibleDebtNetOfTax	0	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	90220000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	66404000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	175071000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	145830000	USD
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	450538000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	398478000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	450449000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	398398000	shares
CY2019Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	8898000	shares
CY2018Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	4474000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	459436000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	398478000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	454923000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	398398000	shares
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.20
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.36
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2400000	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	12000000.0	shares
CY2019Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	3900000	shares
CY2019Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2439000	USD
CY2018Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2256000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3436000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2809000	USD
CY2019Q2	mfa	Employment Agreements Number Of Officers EmploymentAgreementsNumberOfOfficers	4	officer
CY2019Q2	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	8024801000	USD
CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	8713810000	USD
CY2018Q2	mfa	Residential Whole Loans Heldat Fair Value Purchase Transaction Committedin Previous Period Closedin Subsequent Period ResidentialWholeLoansHeldatFairValuePurchaseTransactionCommittedinPreviousPeriodClosedinSubsequentPeriod	34400000	USD
CY2019Q2	mfa	Residential Whole Loans Heldat Fair Value Purchase Transaction Committedin Previous Period Closedin Subsequent Period ResidentialWholeLoansHeldatFairValuePurchaseTransactionCommittedinPreviousPeriodClosedinSubsequentPeriod	70600000	USD
CY2019Q2	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	1435367000	USD
CY2018Q4	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	1383502000	USD
CY2019Q2	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	90400000	USD
CY2018Q4	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	282500000	USD
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334100000	USD
CY2018Q4	us-gaap	Real Estate Investments RealEstateInvestments	249400000	USD
CY2019Q2	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	369700000	USD
CY2018Q4	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	273400000	USD
CY2019Q2	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	5900000000	USD
CY2018Q4	mfa	Loans Including Fair Value Loans Credit Impaired Loansand Other Loansat Carrying Value LoansIncludingFairValueLoansCreditImpairedLoansandOtherLoansatCarryingValue	4700000000	USD
CY2019Q2	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	4400000000	USD
CY2018Q4	mfa	Residential Whole Loans Carrying Value ResidentialWholeLoansCarryingValue	3000000000.0	USD
CY2019Q2	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue	1500000000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue	1700000000	USD
CY2019Q2	us-gaap	Real Estate Investments RealEstateInvestments	334100000	USD
CY2018Q4	us-gaap	Real Estate Investments RealEstateInvestments	249400000	USD
CY2019Q2	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	369700000	USD
CY2018Q4	mfa	Other Real Estate Fair Value OtherRealEstateFairValue	273400000	USD

Files In Submission

Name	View Source	Status
0001055160-19-000021-index-headers.html	Edgar Link	pending
0001055160-19-000021-index.html	Edgar Link	pending
0001055160-19-000021.txt	Edgar Link	pending
0001055160-19-000021-xbrl.zip	Edgar Link	pending
exhibit311certificatio.htm	Edgar Link	pending
exhibit312certificatio.htm	Edgar Link	pending
exhibit321certificatio.htm	Edgar Link	pending
exhibit322certificatio.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
mfa-06302019x10q.htm	Edgar Link	pending
mfa-06302019x10q_htm.xml	Edgar Link	completed
mfa-20190630.xsd	Edgar Link	pending
mfa-20190630_cal.xml	Edgar Link	unprocessable
mfa-20190630_def.xml	Edgar Link	unprocessable
mfa-20190630_lab.xml	Edgar Link	unprocessable
mfa-20190630_pre.xml	Edgar Link	unprocessable
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$MFA
MFA FINANCIAL, INC. Stock $mfa

2019 Q2 Form 10-Q Financial Statement

#000105516019000021 Filed on August 07, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA MFA FINANCIAL, INC. Stock $mfa

2019 Q2 Form 10-Q Financial Statement

#000105516019000021 Filed on August 07, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MFA
MFA FINANCIAL, INC. Stock $mfa