Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001436126-20-000067-index-headers.html | 2020-11-05 18:39:58 | |
| 0001436126-20-000067-index.html | 2020-11-05 18:39:58 | |
| 0001436126-20-000067.txt | 2020-11-05 18:39:58 | |
 0001436126-20-000067-xbrl.zip | 349501 | 2020-11-05 18:39:58 |
| a10qexhibit311-q32020.htm | 10523 | 2020-11-05 18:39:58 |
| a10qexhibit312-q32020.htm | 10484 | 2020-11-05 18:39:58 |
| a10qexhibit321-q32020.htm | 5171 | 2020-11-05 18:39:58 |
| FilingSummary.xml | 41366 | 2020-11-05 18:39:58 |
| Financial_Report.xlsx | 115641 | 2020-11-05 18:39:58 |
| MetaLinks.json | 731120 | 2020-11-05 18:39:58 |
| mg-20200930.htm | 2327180 | 2020-11-05 18:39:58 |
| mg-20200930.xsd | 61158 | 2020-11-05 18:39:58 |
| mg-20200930_cal.xml | 109776 | 2020-11-05 18:39:58 |
| mg-20200930_def.xml | 335368 | 2020-11-05 18:39:58 |
| mg-20200930_htm.xml | 2405341 | 2020-11-05 18:39:58 |
| mg-20200930_lab.xml | 763098 | 2020-11-05 18:39:58 |
| mg-20200930_pre.xml | 523301 | 2020-11-05 18:39:58 |
| R1.htm | 52210 | 2020-11-05 18:39:58 |
| R10.htm | 73330 | 2020-11-05 18:39:58 |
| R11.htm | 39246 | 2020-11-05 18:39:58 |
| R12.htm | 27773 | 2020-11-05 18:39:58 |
| R13.htm | 13973 | 2020-11-05 18:39:58 |
| R14.htm | 18975 | 2020-11-05 18:39:58 |
| R15.htm | 26496 | 2020-11-05 18:39:58 |
| R16.htm | 36047 | 2020-11-05 18:39:58 |
| R17.htm | 15667 | 2020-11-05 18:39:58 |
| R18.htm | 21125 | 2020-11-05 18:39:58 |
| R19.htm | 19739 | 2020-11-05 18:39:58 |
| R2.htm | 101756 | 2020-11-05 18:39:58 |
| R20.htm | 134188 | 2020-11-05 18:39:58 |
| R21.htm | 14626 | 2020-11-05 18:39:58 |
| R22.htm | 93615 | 2020-11-05 18:39:58 |
| R23.htm | 45400 | 2020-11-05 18:39:58 |
| R24.htm | 169909 | 2020-11-05 18:39:58 |
| R25.htm | 73440 | 2020-11-05 18:39:58 |
| R26.htm | 37630 | 2020-11-05 18:39:58 |
| R27.htm | 27211 | 2020-11-05 18:39:58 |
| R28.htm | 10495 | 2020-11-05 18:39:58 |
| R29.htm | 17790 | 2020-11-05 18:39:58 |
| R3.htm | 12830 | 2020-11-05 18:39:58 |
| R30.htm | 20642 | 2020-11-05 18:39:58 |
| R31.htm | 33662 | 2020-11-05 18:39:58 |
| R32.htm | 15573 | 2020-11-05 18:39:58 |
| R33.htm | 16271 | 2020-11-05 18:39:58 |
| R34.htm | 16301 | 2020-11-05 18:39:58 |
| R35.htm | 81501 | 2020-11-05 18:39:58 |
| R36.htm | 85503 | 2020-11-05 18:39:58 |
| R37.htm | 48179 | 2020-11-05 18:39:58 |
| R38.htm | 11103 | 2020-11-05 18:39:58 |
| R39.htm | 101106 | 2020-11-05 18:39:58 |
| R4.htm | 88386 | 2020-11-05 18:39:58 |
| R40.htm | 14486 | 2020-11-05 18:39:58 |
| R41.htm | 33104 | 2020-11-05 18:39:58 |
| R42.htm | 11698 | 2020-11-05 18:39:58 |
| R43.htm | 8477 | 2020-11-05 18:39:58 |
| R44.htm | 11235 | 2020-11-05 18:39:58 |
| R45.htm | 24996 | 2020-11-05 18:39:58 |
| R46.htm | 40594 | 2020-11-05 18:39:58 |
| R47.htm | 29011 | 2020-11-05 18:39:58 |
| R48.htm | 42152 | 2020-11-05 18:39:58 |
| R49.htm | 12887 | 2020-11-05 18:39:58 |
| R5.htm | 24706 | 2020-11-05 18:39:58 |
| R50.htm | 29985 | 2020-11-05 18:39:58 |
| R51.htm | 10296 | 2020-11-05 18:39:58 |
| R52.htm | 10270 | 2020-11-05 18:39:58 |
| R53.htm | 24414 | 2020-11-05 18:39:58 |
| R54.htm | 37064 | 2020-11-05 18:39:58 |
| R55.htm | 24354 | 2020-11-05 18:39:58 |
| R56.htm | 22929 | 2020-11-05 18:39:58 |
| R57.htm | 35403 | 2020-11-05 18:39:58 |
| R58.htm | 22815 | 2020-11-05 18:39:58 |
| R59.htm | 19319 | 2020-11-05 18:39:58 |
| R6.htm | 60336 | 2020-11-05 18:39:58 |
| R60.htm | 18012 | 2020-11-05 18:39:58 |
| R61.htm | 84307 | 2020-11-05 18:39:58 |
| R62.htm | 18391 | 2020-11-05 18:39:58 |
| R63.htm | 17932 | 2020-11-05 18:39:58 |
| R64.htm | 28563 | 2020-11-05 18:39:58 |
| R65.htm | 16867 | 2020-11-05 18:39:58 |
| R66.htm | 27978 | 2020-11-05 18:39:58 |
| R67.htm | 39968 | 2020-11-05 18:39:58 |
| R68.htm | 67775 | 2020-11-05 18:39:58 |
| R69.htm | 49344 | 2020-11-05 18:39:58 |
| R7.htm | 98229 | 2020-11-05 18:39:58 |
| R8.htm | 34372 | 2020-11-05 18:39:58 |
| R9.htm | 181506 | 2020-11-05 18:39:58 |
| report.css | 2767 | 2020-11-05 18:39:58 |
| Show.js | 1085 | 2020-11-05 18:39:58 |