XML 84 R74.htm IDEA: XBRL DOCUMENT v3.22.2.2

Financing Agreements - Pledged Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Accrued interest on assets	$ 27,200	$ 25,700
Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	8,506,310	8,019,405
Non-Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	1,442,387	1,426,051
Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	2,576,917	3,556,273
Securitized | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	4,487,006	3,037,081
Residential whole loans, at carrying value | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	1,902,616	2,629,919
Residential whole loans, at carrying value | Non-Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	248,936	693,982
Residential whole loans, at carrying value | Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	307,841	459,349
Residential whole loans, at carrying value | Securitized | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	1,345,839	1,476,588
Residential whole loans, at fair value | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	6,289,384	5,042,356
Residential whole loans, at fair value | Non-Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	1,171,526	706,377
Residential whole loans, at fair value | Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	2,011,619	2,810,865
Residential whole loans, at fair value | Securitized | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	3,106,239	1,525,114
Securities, at fair value | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	227,407	256,685
Securities, at fair value | Non-Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	0	0
Securities, at fair value | Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	227,407	256,685
Securities, at fair value | Securitized | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	0	0
Other assets: REO | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	86,903	90,445
Other assets: REO | Non-Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	21,925	25,692
Other assets: REO | Mark-to-Market | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	30,050	29,374
Other assets: REO | Securitized | Asset Pledged as Collateral with Right
Debt Instrument [Line Items]
Fair value of securities pledged as collateral under financing agreements	$ 34,928	$ 35,379

X

- Definition

Sum of the fair values as of the date of the latest financial statement presented of securities pledged as collateral and the amount of interest receivable on the securities pledged as collateral.

+ References

No definition available.

+ Details

Name:	mfa_PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledgedAggregateFairValueAndAccruedInterest
Namespace Prefix:	mfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value of securities pledged as collateral against securities sold under agreement to repurchase.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 12
-URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226013-175313

+ Details

Name:	us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseFairValueOfCollateral
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralWithRightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	mfa_FinancialInstrumentMeasurementAxis=mfa_AgreementsWithNonMarkToMarketCollateralProvisionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	mfa_FinancialInstrumentMeasurementAxis=mfa_AgreementsWithMarkToMarketCollateralProvisionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	mfa_FinancialInstrumentMeasurementAxis=mfa_SecuritizedTransactionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_LoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=mfa_ResidentialWholeLoansAtFairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=mfa_RealEstateOwnedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: