| Cover | Feb. 22, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 22, 2021 |
| Entity File Number | 001-36057 |
| Entity Registrant Name | RING ENERGY, INC. |
| Entity Central Index Key | 0001384195 |
| Entity Tax Identification Number | 90-0406406 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 1725 Hughes Landing Blvd. |
| Entity Address, Address Line Two | Suite 900 |
| Entity Address, City or Town | The Woodlands |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77380 |
| City Area Code | 281 |
| Local Phone Number | 397-3699 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value |
| Trading Symbol | REI |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | false |
