| Document and Entity Information | Aug. 02, 2021 | Jun. 30, 2021 |
| Document Type | 8-K | |
| Document Period End Date | Aug. 2, 2021 | |
| Entity File Number | 001-38003 | |
| Entity Registrant Name | RAMACO RESOURCES, INC. | |
| Entity Incorporation, State or Country Code | DE | |
| Entity Tax Identification Number | 38-4018838 | |
| Entity Address, Address Line One | 250 West Main Street, Suite 1800 | |
| Entity Address, City or Town | Lexington | |
| Entity Address, State or Province | KY | |
| Entity Address, Postal Zip Code | 40507 | |
| City Area Code | 859 | |
| Local Phone Number | 244-7455 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, $0.01 par value | |
| Trading Symbol | METC | |
| Security Exchange Name | NASDAQ | |
| Entity Emerging Growth Company | true | |
| Entity Ex Transition Period | true | |
| Entity Central Index Key | 0001687187 | |
| Amendment Flag | false | |
| 9.00% Senior Notes due 2026 | ||
| Title of 12(b) Security | 9.00% Senior Notes due 2026 | |
| Trading Symbol | METCL | |
| Security Exchange Name | NASDAQ |
