| Cover | Dec. 09, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Dec. 8, 2021 |
| Entity Registrant Name | NORTHERN OIL AND GAS, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-33999 |
| Entity Tax Identification Number | 95-3848122 |
| Entity Address, Address Line One | 4350 Baker Road, Suite 400 |
| Entity Address, City or Town | Minnetonka |
| Entity Address, State or Province | MN |
| Entity Address, Postal Zip Code | 55343 |
| City Area Code | 952 |
| Local Phone Number | 476-9800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 |
| Trading Symbol | NOG |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001104485 |
| Amendment Flag | false |
