Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001558370-22-017155-index-headers.html | 2022-11-09 16:12:53 | |
| 0001558370-22-017155-index.html | 2022-11-09 16:12:53 | |
| 0001558370-22-017155.txt | 2022-11-09 16:12:53 | |
 0001558370-22-017155-xbrl.zip | 209425 | 2022-11-09 16:12:53 |
| FilingSummary.xml | 26546 | 2022-11-09 16:12:53 |
| Financial_Report.xlsx | 70328 | 2022-11-09 16:12:53 |
| MetaLinks.json | 513284 | 2022-11-09 16:12:53 |
| metc-20220930.xsd | 42079 | 2022-11-09 16:12:53 |
| metc-20220930x10q.htm | 1564673 | 2022-11-09 16:12:53 |
| metc-20220930x10q_htm.xml | 867885 | 2022-11-09 16:12:53 |
| metc-20220930xex10d2.htm | 93407 | 2022-11-09 16:12:53 |
| metc-20220930xex31d1.htm | 16174 | 2022-11-09 16:12:53 |
| metc-20220930xex31d2.htm | 15942 | 2022-11-09 16:12:53 |
| metc-20220930xex32d1.htm | 6590 | 2022-11-09 16:12:53 |
| metc-20220930xex32d2.htm | 6567 | 2022-11-09 16:12:53 |
| metc-20220930xex95d1.htm | 210609 | 2022-11-09 16:12:53 |
| metc-20220930_cal.xml | 44640 | 2022-11-09 16:12:53 |
| metc-20220930_def.xml | 220464 | 2022-11-09 16:12:53 |
| metc-20220930_lab.xml | 394838 | 2022-11-09 16:12:53 |
| metc-20220930_pre.xml | 299890 | 2022-11-09 16:12:53 |
| R1.htm | 56926 | 2022-11-09 16:12:53 |
| R10.htm | 18896 | 2022-11-09 16:12:53 |
| R11.htm | 38059 | 2022-11-09 16:12:53 |
| R12.htm | 66959 | 2022-11-09 16:12:53 |
| R13.htm | 8410 | 2022-11-09 16:12:53 |
| R14.htm | 32844 | 2022-11-09 16:12:53 |
| R15.htm | 8911 | 2022-11-09 16:12:53 |
| R16.htm | 57142 | 2022-11-09 16:12:53 |
| R17.htm | 10051 | 2022-11-09 16:12:53 |
| R18.htm | 12565 | 2022-11-09 16:12:53 |
| R19.htm | 22718 | 2022-11-09 16:12:53 |
| R2.htm | 113844 | 2022-11-09 16:12:53 |
| R20.htm | 53605 | 2022-11-09 16:12:53 |
| R21.htm | 36714 | 2022-11-09 16:12:53 |
| R22.htm | 53387 | 2022-11-09 16:12:53 |
| R23.htm | 28305 | 2022-11-09 16:12:53 |
| R24.htm | 53742 | 2022-11-09 16:12:53 |
| R25.htm | 7387 | 2022-11-09 16:12:53 |
| R26.htm | 6902 | 2022-11-09 16:12:53 |
| R27.htm | 4032 | 2022-11-09 16:12:53 |
| R28.htm | 25979 | 2022-11-09 16:12:53 |
| R29.htm | 22483 | 2022-11-09 16:12:53 |
| R3.htm | 19492 | 2022-11-09 16:12:53 |
| R30.htm | 14374 | 2022-11-09 16:12:53 |
| R31.htm | 164721 | 2022-11-09 16:12:53 |
| R32.htm | 27535 | 2022-11-09 16:12:53 |
| R33.htm | 110986 | 2022-11-09 16:12:53 |
| R34.htm | 29302 | 2022-11-09 16:12:53 |
| R35.htm | 21082 | 2022-11-09 16:12:53 |
| R36.htm | 10957 | 2022-11-09 16:12:53 |
| R37.htm | 26999 | 2022-11-09 16:12:53 |
| R38.htm | 14364 | 2022-11-09 16:12:53 |
| R39.htm | 48012 | 2022-11-09 16:12:53 |
| R4.htm | 70233 | 2022-11-09 16:12:53 |
| R40.htm | 35122 | 2022-11-09 16:12:53 |
| R41.htm | 73251 | 2022-11-09 16:12:53 |
| R5.htm | 38431 | 2022-11-09 16:12:53 |
| R6.htm | 108782 | 2022-11-09 16:12:53 |
| R7.htm | 7879 | 2022-11-09 16:12:53 |
| R8.htm | 13454 | 2022-11-09 16:12:53 |
| R9.htm | 55233 | 2022-11-09 16:12:53 |
| report.css | 2767 | 2022-11-09 16:12:53 |
| Show.js | 1085 | 2022-11-09 16:12:53 |