Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000866273-21-000022-index-headers.html | 2021-05-10 16:17:00 | |
| 0000866273-21-000022-index.html | 2021-05-10 16:17:00 | |
| 0000866273-21-000022.txt | 2021-05-10 16:17:00 | |
 0000866273-21-000022-xbrl.zip | 403052 | 2021-05-10 16:17:00 |
| exhibit101firstamendmentto.htm | 1261515 | 2021-05-10 16:17:00 |
| exhibit311-mtrxx2021x3x31x.htm | 10176 | 2021-05-10 16:17:00 |
| exhibit312-mtrxx2021x3x31x.htm | 10164 | 2021-05-10 16:17:00 |
| exhibit321-mtrxx2021x3x31x.htm | 5098 | 2021-05-10 16:17:00 |
| exhibit322-mtrxx2021x3x31x.htm | 5114 | 2021-05-10 16:17:00 |
| exhibit95-mtrxx2021x3x31x.htm | 17212 | 2021-05-10 16:17:00 |
| FilingSummary.xml | 26760 | 2021-05-10 16:17:00 |
| Financial_Report.xlsx | 67397 | 2021-05-10 16:17:00 |
| MetaLinks.json | 547044 | 2021-05-10 16:17:00 |
| mtrx-20210331.htm | 1613495 | 2021-05-10 16:17:00 |
| mtrx-20210331.xsd | 46956 | 2021-05-10 16:17:00 |
| mtrx-20210331_cal.xml | 81736 | 2021-05-10 16:17:00 |
| mtrx-20210331_def.xml | 156733 | 2021-05-10 16:17:00 |
| mtrx-20210331_htm.xml | 1317039 | 2021-05-10 16:17:00 |
| mtrx-20210331_lab.xml | 569660 | 2021-05-10 16:17:00 |
| mtrx-20210331_pre.xml | 349787 | 2021-05-10 16:17:00 |
| R1.htm | 52213 | 2021-05-10 16:17:00 |
| R10.htm | 14999 | 2021-05-10 16:17:00 |
| R11.htm | 47402 | 2021-05-10 16:17:00 |
| R12.htm | 36291 | 2021-05-10 16:17:00 |
| R13.htm | 48508 | 2021-05-10 16:17:00 |
| R14.htm | 19609 | 2021-05-10 16:17:00 |
| R15.htm | 8965 | 2021-05-10 16:17:00 |
| R16.htm | 9469 | 2021-05-10 16:17:00 |
| R17.htm | 24574 | 2021-05-10 16:17:00 |
| R18.htm | 104593 | 2021-05-10 16:17:00 |
| R19.htm | 82616 | 2021-05-10 16:17:00 |
| R2.htm | 69913 | 2021-05-10 16:17:00 |
| R20.htm | 6400 | 2021-05-10 16:17:00 |
| R21.htm | 44419 | 2021-05-10 16:17:00 |
| R22.htm | 38885 | 2021-05-10 16:17:00 |
| R23.htm | 50681 | 2021-05-10 16:17:00 |
| R24.htm | 23551 | 2021-05-10 16:17:00 |
| R25.htm | 95870 | 2021-05-10 16:17:00 |
| R26.htm | 82662 | 2021-05-10 16:17:00 |
| R27.htm | 56878 | 2021-05-10 16:17:00 |
| R28.htm | 7738 | 2021-05-10 16:17:00 |
| R29.htm | 9513 | 2021-05-10 16:17:00 |
| R3.htm | 23321 | 2021-05-10 16:17:00 |
| R30.htm | 24950 | 2021-05-10 16:17:00 |
| R31.htm | 7040 | 2021-05-10 16:17:00 |
| R32.htm | 6959 | 2021-05-10 16:17:00 |
| R33.htm | 18378 | 2021-05-10 16:17:00 |
| R34.htm | 31565 | 2021-05-10 16:17:00 |
| R35.htm | 25139 | 2021-05-10 16:17:00 |
| R36.htm | 48796 | 2021-05-10 16:17:00 |
| R37.htm | 6160 | 2021-05-10 16:17:00 |
| R38.htm | 5837 | 2021-05-10 16:17:00 |
| R39.htm | 12701 | 2021-05-10 16:17:00 |
| R4.htm | 6028 | 2021-05-10 16:17:00 |
| R40.htm | 8861 | 2021-05-10 16:17:00 |
| R41.htm | 29081 | 2021-05-10 16:17:00 |
| R42.htm | 52419 | 2021-05-10 16:17:00 |
| R43.htm | 44175 | 2021-05-10 16:17:00 |
| R5.htm | 122807 | 2021-05-10 16:17:00 |
| R6.htm | 15174 | 2021-05-10 16:17:00 |
| R7.htm | 91363 | 2021-05-10 16:17:00 |
| R8.htm | 52987 | 2021-05-10 16:17:00 |
| R9.htm | 13303 | 2021-05-10 16:17:00 |
| report.css | 2767 | 2021-05-10 16:17:00 |
| Show.js | 1085 | 2021-05-10 16:17:00 |