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| 0001437749-18-014598-index.html | 2018-08-06 16:25:34 | |
| 0001437749-18-014598.txt | 2018-08-06 16:25:34 | |
 0001437749-18-014598-xbrl.zip | 70515 | 2018-08-06 16:25:34 |
| ex_119117.htm | 16015 | 2018-08-06 16:25:34 |
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| ex_120199.htm | 91728 | 2018-08-06 16:25:34 |
| ex_120200.htm | 29286 | 2018-08-06 16:25:34 |
| ex_120203.htm | 41286 | 2018-08-06 16:25:34 |
| FilingSummary.xml | 19774 | 2018-08-06 16:25:34 |
| Financial_Report.xlsx | 34596 | 2018-08-06 16:25:34 |
| metc-20180630.xml | 384803 | 2018-08-06 16:25:34 |
| metc-20180630.xsd | 29959 | 2018-08-06 16:25:34 |
| metc-20180630_cal.xml | 32795 | 2018-08-06 16:25:34 |
| metc-20180630_def.xml | 227588 | 2018-08-06 16:25:34 |
| metc-20180630_lab.xml | 195979 | 2018-08-06 16:25:34 |
| metc-20180630_pre.xml | 241707 | 2018-08-06 16:25:34 |
| metc20180630_10q.htm | 723166 | 2018-08-06 16:25:34 |
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| R9.htm | 12503 | 2018-08-06 16:25:34 |
| report.css | 2767 | 2018-08-06 16:25:34 |
| Show.js | 1410 | 2018-08-06 16:25:34 |