| Document and Entity Information | Mar. 27, 2023 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 27, 2023 |
| Entity Registrant Name | GRANITE RIDGE RESOURCES, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 333-264986 |
| Entity Tax Identification Number | 88-2227812 |
| Entity Address, Address Line One | 5217 McKinney Avenue |
| Entity Address, Adress Line Two | Suite 400 |
| Entity Address, City or Town | Dallas |
| Entity Address State Or Province | TX |
| Entity Address, Postal Zip Code | 75205 |
| City Area Code | 214 |
| Local Phone Number | 396-2850 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Central Index Key | 0001928446 |
| Amendment Flag | false |
| Common Stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | GRNT |
| Security Exchange Name | NYSE |
| Warrants | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase Common Stock, each whole warrant exercisable for one share of common stock at an exercise price of $11.50 per share |
| Trading Symbol | GRNT WS |
| Security Exchange Name | NYSE |
