Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000891014-19-000037-index-headers.html | 2019-11-01 16:12:59 | |
| 0000891014-19-000037-index.html | 2019-11-01 16:12:59 | |
| 0000891014-19-000037.txt | 2019-11-01 16:12:59 | |
 0000891014-19-000037-xbrl.zip | 257389 | 2019-11-01 16:12:59 |
| ex15.htm | 2395 | 2019-11-01 16:12:59 |
| ex31_1.htm | 12808 | 2019-11-01 16:12:59 |
| ex31_2.htm | 12704 | 2019-11-01 16:12:59 |
| ex32.htm | 6157 | 2019-11-01 16:12:59 |
| ex95.htm | 96398 | 2019-11-01 16:12:59 |
| ex99.htm | 38083 | 2019-11-01 16:12:59 |
| FilingSummary.xml | 33391 | 2019-11-01 16:12:59 |
| Financial_Report.xlsx | 74983 | 2019-11-01 16:12:59 |
| form10q.htm | 2274523 | 2019-11-01 16:12:59 |
| form10q_htm.xml | 1665832 | 2019-11-01 16:12:59 |
| MetaLinks.json | 594068 | 2019-11-01 16:12:59 |
| mtx-20190929.xsd | 47153 | 2019-11-01 16:12:59 |
| mtx-20190929_cal.xml | 95752 | 2019-11-01 16:12:59 |
| mtx-20190929_def.xml | 255251 | 2019-11-01 16:12:59 |
| mtx-20190929_lab.xml | 711780 | 2019-11-01 16:12:59 |
| mtx-20190929_pre.xml | 430296 | 2019-11-01 16:12:59 |
| R1.htm | 52227 | 2019-11-01 16:12:59 |
| R10.htm | 26880 | 2019-11-01 16:12:59 |
| R11.htm | 38730 | 2019-11-01 16:12:59 |
| R12.htm | 27419 | 2019-11-01 16:12:59 |
| R13.htm | 8622 | 2019-11-01 16:12:59 |
| R14.htm | 15753 | 2019-11-01 16:12:59 |
| R15.htm | 31975 | 2019-11-01 16:12:59 |
| R16.htm | 16186 | 2019-11-01 16:12:59 |
| R17.htm | 28685 | 2019-11-01 16:12:59 |
| R18.htm | 61257 | 2019-11-01 16:12:59 |
| R19.htm | 50760 | 2019-11-01 16:12:59 |
| R2.htm | 78576 | 2019-11-01 16:12:59 |
| R20.htm | 14306 | 2019-11-01 16:12:59 |
| R21.htm | 16481 | 2019-11-01 16:12:59 |
| R22.htm | 135311 | 2019-11-01 16:12:59 |
| R23.htm | 13564 | 2019-11-01 16:12:59 |
| R24.htm | 62683 | 2019-11-01 16:12:59 |
| R25.htm | 65616 | 2019-11-01 16:12:59 |
| R26.htm | 21656 | 2019-11-01 16:12:59 |
| R27.htm | 37457 | 2019-11-01 16:12:59 |
| R28.htm | 28884 | 2019-11-01 16:12:59 |
| R29.htm | 16454 | 2019-11-01 16:12:59 |
| R3.htm | 29412 | 2019-11-01 16:12:59 |
| R30.htm | 31024 | 2019-11-01 16:12:59 |
| R31.htm | 23377 | 2019-11-01 16:12:59 |
| R32.htm | 59441 | 2019-11-01 16:12:59 |
| R33.htm | 50732 | 2019-11-01 16:12:59 |
| R34.htm | 11854 | 2019-11-01 16:12:59 |
| R35.htm | 140011 | 2019-11-01 16:12:59 |
| R36.htm | 23239 | 2019-11-01 16:12:59 |
| R37.htm | 81173 | 2019-11-01 16:12:59 |
| R38.htm | 37296 | 2019-11-01 16:12:59 |
| R39.htm | 53055 | 2019-11-01 16:12:59 |
| R4.htm | 90487 | 2019-11-01 16:12:59 |
| R40.htm | 28408 | 2019-11-01 16:12:59 |
| R41.htm | 32973 | 2019-11-01 16:12:59 |
| R42.htm | 18854 | 2019-11-01 16:12:59 |
| R43.htm | 15624 | 2019-11-01 16:12:59 |
| R44.htm | 26340 | 2019-11-01 16:12:59 |
| R45.htm | 18589 | 2019-11-01 16:12:59 |
| R46.htm | 17258 | 2019-11-01 16:12:59 |
| R47.htm | 102880 | 2019-11-01 16:12:59 |
| R48.htm | 40848 | 2019-11-01 16:12:59 |
| R49.htm | 12556 | 2019-11-01 16:12:59 |
| R5.htm | 86132 | 2019-11-01 16:12:59 |
| R50.htm | 59448 | 2019-11-01 16:12:59 |
| R51.htm | 18888 | 2019-11-01 16:12:59 |
| R52.htm | 48167 | 2019-11-01 16:12:59 |
| R53.htm | 28548 | 2019-11-01 16:12:59 |
| R54.htm | 17939 | 2019-11-01 16:12:59 |
| R55.htm | 36919 | 2019-11-01 16:12:59 |
| R6.htm | 65495 | 2019-11-01 16:12:59 |
| R7.htm | 17528 | 2019-11-01 16:12:59 |
| R8.htm | 53241 | 2019-11-01 16:12:59 |
| R9.htm | 67022 | 2019-11-01 16:12:59 |
| report.css | 2767 | 2019-11-01 16:12:59 |
| Show.js | 1085 | 2019-11-01 16:12:59 |