Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001055160-22-000009-index-headers.html | 2022-05-04 15:26:19 | |
| 0001055160-22-000009-index.html | 2022-05-04 15:26:19 | |
| 0001055160-22-000009.txt | 2022-05-04 15:26:19 | |
 0001055160-22-000009-xbrl.zip | 575704 | 2022-05-04 15:26:19 |
| exhibit101amendmentno1date.htm | 11355 | 2022-05-04 15:26:19 |
| exhibit102amendmentno1date.htm | 11270 | 2022-05-04 15:26:19 |
| exhibit103amendmentno1date.htm | 11766 | 2022-05-04 15:26:19 |
| exhibit311certificationofc.htm | 14886 | 2022-05-04 15:26:19 |
| exhibit312certificationofc.htm | 14534 | 2022-05-04 15:26:19 |
| exhibit321certificationofc.htm | 7496 | 2022-05-04 15:26:19 |
| exhibit322certificationofc.htm | 8150 | 2022-05-04 15:26:19 |
| FilingSummary.xml | 64089 | 2022-05-04 15:26:19 |
| Financial_Report.xlsx | 185853 | 2022-05-04 15:26:19 |
| MetaLinks.json | 1019065 | 2022-05-04 15:26:19 |
| mfa-20220331.htm | 4041286 | 2022-05-04 15:26:19 |
| mfa-20220331.xsd | 111356 | 2022-05-04 15:26:19 |
| mfa-20220331_cal.xml | 106419 | 2022-05-04 15:26:19 |
| mfa-20220331_def.xml | 629193 | 2022-05-04 15:26:19 |
| mfa-20220331_htm.xml | 4253625 | 2022-05-04 15:26:19 |
| mfa-20220331_lab.xml | 1061472 | 2022-05-04 15:26:19 |
| mfa-20220331_pre.xml | 826331 | 2022-05-04 15:26:19 |
| R1.htm | 59866 | 2022-05-04 15:26:19 |
| R10.htm | 81359 | 2022-05-04 15:26:19 |
| R100.htm | 87585 | 2022-05-04 15:26:19 |
| R101.htm | 50235 | 2022-05-04 15:26:19 |
| R102.htm | 4053 | 2022-05-04 15:26:19 |
| R103.htm | 37424 | 2022-05-04 15:26:19 |
| R104.htm | 19319 | 2022-05-04 15:26:19 |
| R105.htm | 8761 | 2022-05-04 15:26:19 |
| R11.htm | 445669 | 2022-05-04 15:26:19 |
| R12.htm | 76132 | 2022-05-04 15:26:19 |
| R13.htm | 108094 | 2022-05-04 15:26:19 |
| R14.htm | 152758 | 2022-05-04 15:26:19 |
| R15.htm | 14921 | 2022-05-04 15:26:19 |
| R16.htm | 49078 | 2022-05-04 15:26:19 |
| R17.htm | 18140 | 2022-05-04 15:26:19 |
| R18.htm | 81098 | 2022-05-04 15:26:19 |
| R19.htm | 31276 | 2022-05-04 15:26:19 |
| R2.htm | 72768 | 2022-05-04 15:26:19 |
| R20.htm | 41474 | 2022-05-04 15:26:19 |
| R21.htm | 209335 | 2022-05-04 15:26:19 |
| R22.htm | 32555 | 2022-05-04 15:26:19 |
| R23.htm | 5045 | 2022-05-04 15:26:19 |
| R24.htm | 114993 | 2022-05-04 15:26:19 |
| R25.htm | 447998 | 2022-05-04 15:26:19 |
| R26.htm | 72106 | 2022-05-04 15:26:19 |
| R27.htm | 108300 | 2022-05-04 15:26:19 |
| R28.htm | 148165 | 2022-05-04 15:26:19 |
| R29.htm | 14363 | 2022-05-04 15:26:19 |
| R3.htm | 35537 | 2022-05-04 15:26:19 |
| R30.htm | 44604 | 2022-05-04 15:26:19 |
| R31.htm | 12170 | 2022-05-04 15:26:19 |
| R32.htm | 64654 | 2022-05-04 15:26:19 |
| R33.htm | 29516 | 2022-05-04 15:26:19 |
| R34.htm | 31882 | 2022-05-04 15:26:19 |
| R35.htm | 193090 | 2022-05-04 15:26:19 |
| R36.htm | 23250 | 2022-05-04 15:26:19 |
| R37.htm | 13347 | 2022-05-04 15:26:19 |
| R38.htm | 5684 | 2022-05-04 15:26:19 |
| R39.htm | 11360 | 2022-05-04 15:26:19 |
| R4.htm | 85141 | 2022-05-04 15:26:19 |
| R40.htm | 16011 | 2022-05-04 15:26:19 |
| R41.htm | 10759 | 2022-05-04 15:26:19 |
| R42.htm | 8061 | 2022-05-04 15:26:19 |
| R43.htm | 7450 | 2022-05-04 15:26:19 |
| R44.htm | 21930 | 2022-05-04 15:26:19 |
| R45.htm | 55648 | 2022-05-04 15:26:19 |
| R46.htm | 90057 | 2022-05-04 15:26:19 |
| R47.htm | 39005 | 2022-05-04 15:26:19 |
| R48.htm | 113089 | 2022-05-04 15:26:19 |
| R49.htm | 31127 | 2022-05-04 15:26:19 |
| R5.htm | 31168 | 2022-05-04 15:26:19 |
| R50.htm | 45858 | 2022-05-04 15:26:19 |
| R51.htm | 7734 | 2022-05-04 15:26:19 |
| R52.htm | 30377 | 2022-05-04 15:26:19 |
| R53.htm | 28225 | 2022-05-04 15:26:19 |
| R54.htm | 12265 | 2022-05-04 15:26:19 |
| R55.htm | 16623 | 2022-05-04 15:26:19 |
| R56.htm | 36219 | 2022-05-04 15:26:19 |
| R57.htm | 15973 | 2022-05-04 15:26:19 |
| R58.htm | 22855 | 2022-05-04 15:26:19 |
| R59.htm | 9650 | 2022-05-04 15:26:19 |
| R6.htm | 72665 | 2022-05-04 15:26:19 |
| R60.htm | 21607 | 2022-05-04 15:26:19 |
| R61.htm | 10966 | 2022-05-04 15:26:19 |
| R62.htm | 6467 | 2022-05-04 15:26:19 |
| R63.htm | 15240 | 2022-05-04 15:26:19 |
| R64.htm | 23973 | 2022-05-04 15:26:19 |
| R65.htm | 15103 | 2022-05-04 15:26:19 |
| R66.htm | 39128 | 2022-05-04 15:26:19 |
| R67.htm | 28054 | 2022-05-04 15:26:19 |
| R68.htm | 18850 | 2022-05-04 15:26:19 |
| R69.htm | 17125 | 2022-05-04 15:26:19 |
| R7.htm | 23495 | 2022-05-04 15:26:19 |
| R70.htm | 5782 | 2022-05-04 15:26:19 |
| R71.htm | 28971 | 2022-05-04 15:26:19 |
| R72.htm | 11548 | 2022-05-04 15:26:19 |
| R73.htm | 20237 | 2022-05-04 15:26:19 |
| R74.htm | 36284 | 2022-05-04 15:26:19 |
| R75.htm | 15638 | 2022-05-04 15:26:19 |
| R76.htm | 6474 | 2022-05-04 15:26:19 |
| R77.htm | 14115 | 2022-05-04 15:26:19 |
| R78.htm | 24728 | 2022-05-04 15:26:19 |
| R79.htm | 15872 | 2022-05-04 15:26:19 |
| R8.htm | 94104 | 2022-05-04 15:26:19 |
| R80.htm | 16270 | 2022-05-04 15:26:19 |
| R81.htm | 11605 | 2022-05-04 15:26:19 |
| R82.htm | 3962 | 2022-05-04 15:26:19 |
| R83.htm | 5605 | 2022-05-04 15:26:19 |
| R84.htm | 26502 | 2022-05-04 15:26:19 |
| R85.htm | 34955 | 2022-05-04 15:26:19 |
| R86.htm | 8277 | 2022-05-04 15:26:19 |
| R87.htm | 12688 | 2022-05-04 15:26:19 |
| R88.htm | 13520 | 2022-05-04 15:26:19 |
| R89.htm | 11866 | 2022-05-04 15:26:19 |
| R9.htm | 6149 | 2022-05-04 15:26:19 |
| R90.htm | 14689 | 2022-05-04 15:26:19 |
| R91.htm | 27649 | 2022-05-04 15:26:19 |
| R92.htm | 60151 | 2022-05-04 15:26:19 |
| R93.htm | 35169 | 2022-05-04 15:26:19 |
| R94.htm | 7498 | 2022-05-04 15:26:19 |
| R95.htm | 15760 | 2022-05-04 15:26:19 |
| R96.htm | 15677 | 2022-05-04 15:26:19 |
| R97.htm | 50021 | 2022-05-04 15:26:19 |
| R98.htm | 22887 | 2022-05-04 15:26:19 |
| R99.htm | 19137 | 2022-05-04 15:26:19 |
| report.css | 2768 | 2022-05-04 15:26:19 |
| Show.js | 1086 | 2022-05-04 15:26:19 |