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| 0001140361-18-021713-index.html | 2018-05-04 15:01:51 | |
| 0001140361-18-021713.txt | 2018-05-04 15:01:51 | |
 0001140361-18-021713-xbrl.zip | 139390 | 2018-05-04 15:01:51 |
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| Financial_Report.xlsx | 67529 | 2018-05-04 15:01:51 |
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| mtx-20180330.xml | 1246026 | 2018-05-04 15:01:51 |
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| mtx-20180330_cal.xml | 62150 | 2018-05-04 15:01:51 |
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| report.css | 2767 | 2018-05-04 15:01:51 |
| Show.js | 1410 | 2018-05-04 15:01:51 |