XML 48 R28.htm IDEA: XBRL DOCUMENT
v3.20.4

Residential Mortgage Securities and MSR Related Assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract] |
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value | The following tables present certain information about the Company’s residential mortgage securities at December 31, 2020 and 2019: December 31, 2020
(In Thousands) |  | Principal/ Current Face |  | Purchase Premiums |  | Accretable Purchase Discounts |  | Discount Designated as Credit Reserve (1) |  | Gross Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Net Unrealized Gain/(Loss) |  | Fair Value
Non-Agency MBS (2)(3)(4) |  | $ | 57,847 |  |  | $ | — |  |  | $ | (8,136) |  |  | $ | (669) |  |  | $ | 49,042 |  |  | $ | 8,585 |  |  | $ | (861) |  |  | $ | 7,724 |  |  | $ | 56,766 |
CRT securities (5) |  | 104,031 |  |  | 3,022 |  |  | (70) |  |  | (20,768) |  |  | 86,215 |  |  | 18,341 |  |  | (322) |  |  | 18,019 |  |  | 104,234 |
Total residential mortgage securities |  | $ | 161,878 |  |  | $ | 3,022 |  |  | $ | (8,206) |  |  | $ | (21,437) |  |  | $ | 135,257 |  |  | $ | 26,926 |  |  | $ | (1,183) |  |  | $ | 25,743 |  |  | $ | 161,000 |
December 31, 2019
(In Thousands) |  | Principal/ Current Face |  | Purchase Premiums |  | Accretable Purchase Discounts |  | Discount Designated as Credit Reserve (1) |  | Gross Amortized Cost (6) |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Net Unrealized Gain/(Loss) |  | Fair Value
Agency MBS: (7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fannie Mae |  | $ | 1,119,708 |  |  | $ | 43,249 |  |  | $ | (22) |  |  | $ | — |  |  | $ | 1,162,935 |  |  | $ | 9,799 |  |  | $ | (14,741) |  |  | $ | (4,942) |  |  | $ | 1,157,993 |
Freddie Mac |  | 480,879 |  |  | 19,468 |  |  | — |  |  | — |  |  | 500,961 |  |  | 5,475 |  |  | (3,968) |  |  | 1,507 |  |  | 502,468 |
Ginnie Mae |  | 3,996 |  |  | 73 |  |  | — |  |  | — |  |  | 4,069 |  |  | 52 |  |  | — |  |  | 52 |  |  | 4,121 |
Total Agency MBS |  | 1,604,583 |  |  | 62,790 |  |  | (22) |  |  | — |  |  | 1,667,965 |  |  | 15,326 |  |  | (18,709) |  |  | (3,383) |  |  | 1,664,582 |
Non-Agency MBS: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected to Recover Par (2)(3) |  | 722,477 |  |  | — |  |  | (16,661) |  |  | — |  |  | 705,816 |  |  | 19,861 |  |  | (9) |  |  | 19,852 |  |  | 725,668 |
Expected to Recover Less than Par (2) |  | 1,472,826 |  |  | — |  |  | (73,956) |  |  | (436,598) |  |  | 962,272 |  |  | 375,598 |  |  | (9) |  |  | 375,589 |  |  | 1,337,861 |
Total Non-Agency MBS (4) |  | 2,195,303 |  |  | — |  |  | (90,617) |  |  | (436,598) |  |  | 1,668,088 |  |  | 395,459 |  |  | (18) |  |  | 395,441 |  |  | 2,063,529 |
Total MBS |  | 3,799,886 |  |  | 62,790 |  |  | (90,639) |  |  | (436,598) |  |  | 3,336,053 |  |  | 410,785 |  |  | (18,727) |  |  | 392,058 |  |  | 3,728,111 |
CRT securities (5) |  | 244,932 |  |  | 4,318 |  |  | (55) |  |  | — |  |  | 249,195 |  |  | 6,304 |  |  | (91) |  |  | 6,213 |  |  | 255,408 |
Total residential mortgage securities |  | $ | 4,044,818 |  |  | $ | 67,108 |  |  | $ | (90,694) |  |  | $ | (436,598) |  |  | $ | 3,585,248 |  |  | $ | 417,089 |  |  | $ | (18,818) |  |  | $ | 398,271 |  |  | $ | 3,983,519 |
(1)Discount designated as Credit Reserve is generally not expected to be accreted into interest income. (2)Based on management’s current estimates of future principal cash flows expected to be received. (3)Includes RPL/NPL MBS, which at December 31, 2020 had a $55.0 million Principal/Current face, $46.9 million amortized cost and $53.9 million fair value. At December 31, 2019, RPL/NPL MBS had a $632.3 million Principal/Current face, $631.8 million amortized cost and $635.0 million fair value. (4)At December 31, 2020 and 2019, the Company expected to recover approximately 99% and 80% of the then-current face amount of Non-Agency MBS, respectively. (5)Amounts disclosed at December 31, 2020 includes CRT securities with a fair value of $66.2 million for which the fair value option has been elected. Such securities had $551,000 gross unrealized gains and gross unrealized losses of approximately $322,000 at December 31, 2020. Amounts disclosed at December 31, 2019 includes CRT securities with a fair value of $255.4 million for which the fair value option had been elected. Such securities had gross unrealized gains of approximately $6.3 million and gross unrealized losses of approximately $91,000 at December 31, 2019. (6)Includes principal payments receivable of $614,000 at December 31, 2019, which is not included in the Principal/Current Face. (7)Amounts disclosed at December 31, 2019 include Agency MBS with a fair value of $280.3 million, for which the fair value option has been elected. Such securities had $4.5 million unrealized gains and no gross unrealized losses at December 31, 2019, respectively.
Schedule of Sale of Residential Mortgage Securities | The following table presents information about the Company’s sales of its residential mortgage securities for the years ended December 31, 2020, 2019 and 2018. The Company has no continuing involvement with any of the sold securities.
|  | For the Year Ended December 31,
|  | 2020 |  | 2019 |  | 2018
(In Thousands) |  | Sales Proceeds |  | Gains/(Losses) |  | Sales Proceeds |  | Gains/(Losses) |  | Sales Proceeds |  | Gains/(Losses)
Agency MBS |  | $ | 1,500,875 |  |  | $ | (19,291) |  |  | $ | 360,634 |  |  | $ | 499 |  |  | $ | 122,027 |  |  | $ | (6,810) |
Non-Agency MBS |  | 1,318,958 |  |  | 107,999 |  |  | 291,391 |  |  | 50,360 |  |  | 117,060 |  |  | 36,744 |
CRT Securities |  | 243,025 |  |  | (27,011) |  |  | 256,671 |  |  | 11,143 |  |  | 299,878 |  |  | 31,373 |
Total |  | $ | 3,062,858 |  |  | $ | 61,697 |  |  | $ | 908,696 |  |  | $ | 62,002 |  |  | $ | 538,965 |  |  | $ | 61,307 |
Schedule of information about MBS and CRT Securities that were in an unrealized loss position | The following table presents information about the Company’s residential mortgage securities that were in an unrealized loss position at December 31, 2020, with respect to which no allowance for credit losses has been recorded:
|  | Unrealized Loss Position For: |  |
|  | Less than 12 Months |  | 12 Months or more |  | Total
(Dollars in Thousands) |  | Fair Value |  | Unrealized Losses |  | Number of Securities |  | Fair Value |  | Unrealized Losses |  | Number of Securities |  | Fair Value |  | Unrealized Losses
Non-Agency MBS (1) |  | $ | 41,139 |  |  | $ | 861 |  |  | 4 |  |  | $ | — |  |  | $ | — |  |  | — |  |  | $ | 41,139 |  |  | $ | 861 |
CRT securities (2) |  | 62,252 |  |  | 322 |  |  | 8 |  |  | — |  |  | — |  |  | — |  |  | 62,252 |  |  | 322 |
Total residential mortgage securities |  | $ | 103,391 |  |  | $ | 1,183 |  |  | 12 |  |  | $ | — |  |  | $ | — |  |  | — |  |  | $ | 103,391 |  |  | $ | 1,183 |
(1) Based on management’s current estimates of future principal cash flows expected to be received. (2) Amounts disclosed at December 31, 2020 include CRT securities with a fair value of $62.2 million for which the fair value option has been elected. Such securities had unrealized losses of $322,000 at December 31, 2020
Debt Securities, Available-for-sale, Allowance for Credit Loss | The following table presents a roll-forward of the allowance for credit losses on the Company’s Residential mortgage securities and MSR-related assets:
|  | For the Year Ended December 31,
(Dollars In Thousands) |  | 2020 |  | 2019
Allowance for credit losses at beginning of period |  | $ | — |  |  | $ | — |
Current provision: |  | — |  |  | — |
Securities with no prior loss allowance |  | 344,269 |  |  | — |
Securities with a prior loss allowance |  | — |  |  | — |
Write-offs, including allowance related to securities the Company intended to sell |  | (344,269) |  |  | — |
Allowance for credit losses at end of period |  | $ | — |  |  | $ | — |
Schedule of impact of AFS on AOCI | The following table presents the impact of the Company’s AFS securities on its AOCI for the years ended December 31, 2020, 2019, and 2018:
|  | For the Year Ended December 31,
(In Thousands) |  | 2020 |  | 2019 |  | 2018
AOCI from AFS securities: |  |  |  |  |  |
Unrealized gain on AFS securities at beginning of period |  | $ | 392,722 |  |  | $ | 417,167 |  |  | $ | 620,648 |
Unrealized (loss)/gain on Agency MBS, net |  | (161) |  |  | 21,844 |  |  | (17,891) |
Unrealized gain/(loss) on Non-Agency MBS, net |  | 367,469 |  |  | (6,682) |  |  | (131,939) |
Unrealized gain/(loss) on MSR term notes, net |  | 52,973 |  |  | 5,173 |  |  | (812) |
Reclassification adjustment for MBS sales included in net income |  | (389,127) |  |  | (44,600) |  |  | (51,580) |
Reclassification adjustment for impairment included in net income |  | (344,269) |  |  | (180) |  |  | (1,259) |
Change in AOCI from AFS securities |  | (313,115) |  |  | (24,445) |  |  | (203,481) |
Balance at end of period |  | $ | 79,607 |  |  | $ | 392,722 |  |  | $ | 417,167 |
Schedule of interest income on MBS, CRT Securities and MSR Related Assets | The following table presents the components of interest income on the Company’s residential mortgage securities and MSR-related assets for the years ended December 31, 2020, 2019 and 2018:
|  | For the Year Ended December 31,
(In Thousands) |  | 2020 |  | 2019 |  | 2018
Agency MBS |  |  |  |  |  |
Coupon interest |  | $ | 14,038 |  |  | $ | 82,446 |  |  | $ | 88,233 |
Effective yield adjustment (1) |  | (5,186) |  |  | (26,545) |  |  | (25,930) |
Interest income |  | $ | 8,852 |  |  | $ | 55,901 |  |  | $ | 62,303 |
Legacy Non-Agency MBS |  |  |  |  |  |
Coupon interest |  | $ | 18,263 |  |  | $ | 87,024 |  |  | $ | 109,714 |
Effective yield adjustment (2)(3) |  | 10,565 |  |  | 59,622 |  |  | 69,309 |
Interest income |  | $ | 28,828 |  |  | $ | 146,646 |  |  | $ | 179,023 |
RPL/NPL MBS |  |  |  |  |  |
Coupon interest |  | $ | 8,376 |  |  | $ | 53,086 |  |  | $ | 46,339 |
Effective yield adjustment (1)(4) |  | 560 |  |  | 338 |  |  | 1,434 |
Interest income |  | $ | 8,936 |  |  | $ | 53,424 |  |  | $ | 47,773 |
CRT securities |  |  |  |  |  |
Coupon interest |  | $ | 7,010 |  |  | $ | 20,532 |  |  | $ | 30,628 |
Effective yield adjustment (2) |  | 511 |  |  | (1,949) |  |  | 2,748 |
Interest income |  | $ | 7,521 |  |  | $ | 18,583 |  |  | $ | 33,376 |
MSR-related assets |  |  |  |  |  |
Coupon interest |  | $ | 25,970 |  |  | $ | 52,644 |  |  | $ | 27,174 |
Effective yield adjustment (1)(2) |  | 9,987 |  |  | 3 |  |  | 1,246 |
Interest income |  | $ | 35,957 |  |  | $ | 52,647 |  |  | $ | 28,420 |
(1)Includes amortization of premium paid net of accretion of purchase discount. For Agency MBS, RPL/NPL MBS and the corporate loan secured by MSRs, interest income is recorded at an effective yield, which reflects net premium amortization/accretion based on actual prepayment activity. (2)The effective yield adjustment is the difference between the net income calculated using the net yield less the current coupon yield. The net yield may be based on management’s estimates of the amount and timing of future cash flows or in the instrument’s contractual cash flows, depending on the relevant accounting standards. (3)Includes accretion income recognized due to the impact of redemptions of certain securities that had been previously been purchased at a discount of $14.5 million and $2.7 million during the years ended December 31, 2019 and 2018, respectively. (4)Includes accretion income recognized due to the impact of redemptions of certain securities that had been previously been purchased at a discount of $329,000 and $1.4 million during the years ended December 31, 2019 and 2018, respectively.

X
- Definition Tabular disclosure of the impact of available-for-sale securities on accumulated other comprehensive income. + References No definition available. + Details
Name: | mfa_ScheduleOfAccumulatedOtherComprehensiveIncomeMortgageBackedSecuritiesTableTextBlock
Namespace Prefix: | mfa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Sale of Residential Mortgage Securities [Table Text Block] + References No definition available. + Details
Name: | mfa_ScheduleofSaleofResidentialMortgageSecuritiesTableTextBlock
Namespace Prefix: | mfa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleAllowanceForCreditLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of interest income and income classified as other. + References No definition available. + Details
Name: | us-gaap_InterestAndOtherIncomeTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563 + Details
Name: | us-gaap_ScheduleOfUnrealizedLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration