XML 107 R72.htm IDEA: XBRL DOCUMENT
v3.19.3

Repurchase Agreements (Borrowings Under Repurchase Agreement) (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 8,571,422 | $ 7,879,087
Repurchase agreement financings are subject to termination | 1,700,000 |
Repurchase Agreement Borrowings |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 8,572,545 | $ 7,879,114
Weighted Average Interest Rate | 3.22% | 3.42%
Less debt issuance costs | $ 1,123 | $ 27
Total repurchase agreements less debt issuance costs | 8,571,422 | 7,879,087
Repurchase Agreement Borrowings | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 0 |
Weighted Average Interest Rate | 0.00% |
Repurchase Agreement Borrowings | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 4,082,663 |
Weighted Average Interest Rate | 2.88% |
Repurchase Agreement Borrowings | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 1,973,985 |
Weighted Average Interest Rate | 3.36% |
Repurchase Agreement Borrowings | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 1,594,693 |
Weighted Average Interest Rate | 3.59% |
Repurchase Agreement Borrowings | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 921,204 |
Weighted Average Interest Rate | 3.77% |
Repurchase Agreement Borrowings | Within 30 days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 6,487,134 | $ 6,747,166
Weighted Average Interest Rate | 3.18% | 3.35%
Repurchase Agreement Borrowings | Over 30 days to 3 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 660,954 | $ 368,857
Weighted Average Interest Rate | 2.46% | 3.10%
Repurchase Agreement Borrowings | Over 3 months to 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 1,312,280 | $ 763,091
Weighted Average Interest Rate | 3.72% | 4.18%
Repurchase Agreement Borrowings | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 112,177 | $ 0
Weighted Average Interest Rate | 3.87% | 0.00%
Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 1,675,861 | $ 2,384,357
Agency MBS | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Agency MBS | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 1,067,633 |
Agency MBS | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 608,228 |
Agency MBS | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Agency MBS | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Legacy Non-Agency MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 1,231,908 | 1,447,585
Legacy Non-Agency MBS | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Legacy Non-Agency MBS | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 1,017,253 |
Legacy Non-Agency MBS | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Legacy Non-Agency MBS | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 214,655 |
Legacy Non-Agency MBS | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
RPL/NPL MBS |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 642,740 | 1,084,532
RPL/NPL MBS | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
RPL/NPL MBS | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 642,740 |
RPL/NPL MBS | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
RPL/NPL MBS | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
RPL/NPL MBS | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
CRT securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 303,544 | 391,586
CRT securities | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
CRT securities | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 303,544 |
CRT securities | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
CRT securities | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
CRT securities | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Residential Whole Loans, at Fair Value |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 3,727,526 | 2,020,508
Residential Whole Loans, at Fair Value | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Residential Whole Loans, at Fair Value | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 300,767 |
Residential Whole Loans, at Fair Value | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 1,365,757 |
Residential Whole Loans, at Fair Value | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 1,251,974 |
Residential Whole Loans, at Fair Value | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 809,028 |
MSR-related assets |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 918,055 | 474,127
MSR-related assets | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
MSR-related assets | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 744,876 |
MSR-related assets | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
MSR-related assets | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 128,064 |
MSR-related assets | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 45,115 |
Other |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 72,911 | $ 76,419
Other | Overnight |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Other | Within 30 Days |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 5,850 |
Other | Over 30 Days to 3 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Other | Over 3 Months to 12 Months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | 0 |
Other | Over 12 months |  |
Debt Securities, Available-for-sale [Line Items] |  |
Balance of repurchase agreements | $ 67,061 |
Minimum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreement financings are subject to termination, period | 1 month |
Maximum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Repurchase agreement financings are subject to termination, period | 6 months |

X
- Definition Securities Sold Under Agreements To Repurchase, Net of Debt Issuance Costs + References No definition available. + Details
Name: | mfa_SecuritiesSoldUnderAgreementsToRepurchaseNetofDebtIssuanceCosts
Namespace Prefix: | mfa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Securities Sold Under Agreements To Repurchase, Subject To Termination + References No definition available. + Details
Name: | mfa_SecuritiesSoldUnderAgreementsToRepurchaseSubjectToTermination
Namespace Prefix: | mfa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Securities Sold Under Agreements To Repurchase, Subject To Termination, Notice Period + References No definition available. + Details
Name: | mfa_SecuritiesSoldUnderAgreementsToRepurchaseSubjectToTerminationNoticePeriod
Namespace Prefix: | mfa_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest rate on the amount to be repaid to the counterparty to the repurchase agreement when the carrying amount (or market value, if higher than the carrying amount) of securities or other assets sold under the repurchase agreement exceeds 10 percent of total assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(A)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49176635&loc=d3e9760-107771 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(a)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_SecuritiesSoldUnderAgreementsToRepurchase
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_UnamortizedDebtIssuanceExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SecuritiesSoldUnderAgreementsToRepurchaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=us-gaap_MaturityOvernightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=us-gaap_MaturityUpTo30DaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=us-gaap_Maturity30To90DaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=mfa_MaturityOver90DaysTo12MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis=mfa_MaturityOver12MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfa_AssetsSoldUnderAgreementsToRepurchaseRemainingPeriodBeforeInterestRateResetAxis=mfa_InterestRateResetWithin30DaysMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfa_AssetsSoldUnderAgreementsToRepurchaseRemainingPeriodBeforeInterestRateResetAxis=mfa_InterestRateResetOver30DaysTo3MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfa_AssetsSoldUnderAgreementsToRepurchaseRemainingPeriodBeforeInterestRateResetAxis=mfa_InterestRateResetOver3Monthsto12MonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | mfa_AssetsSoldUnderAgreementsToRepurchaseRemainingPeriodBeforeInterestRateResetAxis=mfa_InterestRateResetOver12MonthsMember
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=us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
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=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=mfa_OtherInterestEarningAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |