Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000876437-23-000013-index-headers.html | 2023-02-22 16:04:11 | |
| 0000876437-23-000013-index.html | 2023-02-22 16:04:11 | |
| 0000876437-23-000013.txt | 2023-02-22 16:04:11 | |
 0000876437-23-000013-xbrl.zip | 733364 | 2023-02-22 16:04:11 |
| FilingSummary.xml | 58502 | 2023-02-22 16:04:11 |
| Financial_Report.xlsx | 187499 | 2023-02-22 16:04:11 |
| MetaLinks.json | 1143150 | 2023-02-22 16:04:11 |
| mtg-123122xex1012q42022.htm | 11090 | 2023-02-22 16:04:11 |
| mtg-123122xex10228q42022.htm | 80588 | 2023-02-22 16:04:11 |
| mtg-123122xex10229q42022.htm | 37751 | 2023-02-22 16:04:11 |
| mtg-123122xex106q42022.htm | 3807 | 2023-02-22 16:04:11 |
| mtg-123122xex108q42022.htm | 91328 | 2023-02-22 16:04:11 |
| mtg-123122xex21q42022.htm | 12006 | 2023-02-22 16:04:11 |
| mtg-123122xex23q42022.htm | 3279 | 2023-02-22 16:04:11 |
| mtg-123122xex311q42022.htm | 9419 | 2023-02-22 16:04:11 |
| mtg-123122xex312q42022.htm | 9451 | 2023-02-22 16:04:11 |
| mtg-123122xex43q42022.htm | 11795 | 2023-02-22 16:04:11 |
| mtg-20221231.htm | 4724091 | 2023-02-22 16:04:11 |
| mtg-20221231.xsd | 84353 | 2023-02-22 16:04:11 |
| mtg-20221231_cal.xml | 126490 | 2023-02-22 16:04:11 |
| mtg-20221231_def.xml | 523463 | 2023-02-22 16:04:11 |
 mtg-20221231_g1.jpg | 8257 | 2023-02-22 16:04:11 |
 mtg-20221231_g2.jpg | 46096 | 2023-02-22 16:04:11 |
 mtg-20221231_g3.jpg | 3047 | 2023-02-22 16:04:11 |
| mtg-20221231_htm.xml | 3979017 | 2023-02-22 16:04:11 |
| mtg-20221231_lab.xml | 1053183 | 2023-02-22 16:04:11 |
| mtg-20221231_pre.xml | 779122 | 2023-02-22 16:04:11 |
| mtg123122-ex32q42022.htm | 4824 | 2023-02-22 16:04:11 |
| R1.htm | 64384 | 2023-02-22 16:04:11 |
| R10.htm | 63803 | 2023-02-22 16:04:11 |
| R11.htm | 35502 | 2023-02-22 16:04:11 |
| R12.htm | 215747 | 2023-02-22 16:04:11 |
| R13.htm | 96431 | 2023-02-22 16:04:11 |
| R14.htm | 31285 | 2023-02-22 16:04:11 |
| R15.htm | 96422 | 2023-02-22 16:04:11 |
| R16.htm | 157879 | 2023-02-22 16:04:11 |
| R17.htm | 72493 | 2023-02-22 16:04:11 |
| R18.htm | 292442 | 2023-02-22 16:04:11 |
| R19.htm | 54455 | 2023-02-22 16:04:11 |
| R2.htm | 7811 | 2023-02-22 16:04:11 |
| R20.htm | 13860 | 2023-02-22 16:04:11 |
| R21.htm | 32450 | 2023-02-22 16:04:11 |
| R22.htm | 20308 | 2023-02-22 16:04:11 |
| R23.htm | 13284 | 2023-02-22 16:04:11 |
| R24.htm | 7947 | 2023-02-22 16:04:11 |
| R25.htm | 32864 | 2023-02-22 16:04:11 |
| R26.htm | 128232 | 2023-02-22 16:04:11 |
| R27.htm | 18463 | 2023-02-22 16:04:11 |
| R28.htm | 78262 | 2023-02-22 16:04:11 |
| R29.htm | 11891 | 2023-02-22 16:04:11 |
| R3.htm | 99013 | 2023-02-22 16:04:11 |
| R30.htm | 33676 | 2023-02-22 16:04:11 |
| R31.htm | 221916 | 2023-02-22 16:04:11 |
| R32.htm | 83337 | 2023-02-22 16:04:11 |
| R33.htm | 14482 | 2023-02-22 16:04:11 |
| R34.htm | 88901 | 2023-02-22 16:04:11 |
| R35.htm | 143014 | 2023-02-22 16:04:11 |
| R36.htm | 74208 | 2023-02-22 16:04:11 |
| R37.htm | 295653 | 2023-02-22 16:04:11 |
| R38.htm | 55915 | 2023-02-22 16:04:11 |
| R39.htm | 23976 | 2023-02-22 16:04:11 |
| R4.htm | 88033 | 2023-02-22 16:04:11 |
| R40.htm | 13728 | 2023-02-22 16:04:11 |
| R41.htm | 11845 | 2023-02-22 16:04:11 |
| R42.htm | 5474 | 2023-02-22 16:04:11 |
| R43.htm | 13193 | 2023-02-22 16:04:11 |
| R44.htm | 11937 | 2023-02-22 16:04:11 |
| R45.htm | 56792 | 2023-02-22 16:04:11 |
| R46.htm | 49841 | 2023-02-22 16:04:11 |
| R47.htm | 55059 | 2023-02-22 16:04:11 |
| R48.htm | 12843 | 2023-02-22 16:04:11 |
| R49.htm | 32040 | 2023-02-22 16:04:11 |
| R5.htm | 29082 | 2023-02-22 16:04:11 |
| R50.htm | 55991 | 2023-02-22 16:04:11 |
| R51.htm | 7138 | 2023-02-22 16:04:11 |
| R52.htm | 17650 | 2023-02-22 16:04:11 |
| R53.htm | 77012 | 2023-02-22 16:04:11 |
| R54.htm | 33936 | 2023-02-22 16:04:11 |
| R55.htm | 16922 | 2023-02-22 16:04:11 |
| R56.htm | 77047 | 2023-02-22 16:04:11 |
| R57.htm | 30927 | 2023-02-22 16:04:11 |
| R58.htm | 30228 | 2023-02-22 16:04:11 |
| R59.htm | 12376 | 2023-02-22 16:04:11 |
| R6.htm | 74607 | 2023-02-22 16:04:11 |
| R60.htm | 13129 | 2023-02-22 16:04:11 |
| R61.htm | 20786 | 2023-02-22 16:04:11 |
| R62.htm | 32199 | 2023-02-22 16:04:11 |
| R63.htm | 50002 | 2023-02-22 16:04:11 |
| R64.htm | 34393 | 2023-02-22 16:04:11 |
| R65.htm | 44109 | 2023-02-22 16:04:11 |
| R66.htm | 23968 | 2023-02-22 16:04:11 |
| R67.htm | 32175 | 2023-02-22 16:04:11 |
| R68.htm | 33348 | 2023-02-22 16:04:11 |
| R69.htm | 21908 | 2023-02-22 16:04:11 |
| R7.htm | 98006 | 2023-02-22 16:04:11 |
| R70.htm | 33493 | 2023-02-22 16:04:11 |
| R71.htm | 18312 | 2023-02-22 16:04:11 |
| R72.htm | 18412 | 2023-02-22 16:04:11 |
| R73.htm | 36749 | 2023-02-22 16:04:11 |
| R74.htm | 29932 | 2023-02-22 16:04:11 |
| R75.htm | 23521 | 2023-02-22 16:04:11 |
| R76.htm | 36100 | 2023-02-22 16:04:11 |
| R77.htm | 48144 | 2023-02-22 16:04:11 |
| R78.htm | 37755 | 2023-02-22 16:04:11 |
| R79.htm | 42654 | 2023-02-22 16:04:11 |
| R8.htm | 9022 | 2023-02-22 16:04:11 |
| R80.htm | 64840 | 2023-02-22 16:04:11 |
| R81.htm | 29730 | 2023-02-22 16:04:11 |
| R82.htm | 23777 | 2023-02-22 16:04:11 |
| R83.htm | 8899 | 2023-02-22 16:04:11 |
| R84.htm | 9679 | 2023-02-22 16:04:11 |
| R85.htm | 38361 | 2023-02-22 16:04:11 |
| R86.htm | 30676 | 2023-02-22 16:04:11 |
| R87.htm | 20610 | 2023-02-22 16:04:11 |
| R88.htm | 40974 | 2023-02-22 16:04:11 |
| R89.htm | 234028 | 2023-02-22 16:04:11 |
| R9.htm | 7053 | 2023-02-22 16:04:11 |
| R90.htm | 20609 | 2023-02-22 16:04:11 |
| R91.htm | 16612 | 2023-02-22 16:04:11 |
| report.css | 2768 | 2023-02-22 16:04:11 |
| Show.js | 1086 | 2023-02-22 16:04:11 |