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Cover Page - shares
 3 Months Ended
Mar. 31, 2023
May 08, 2023
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2023  
Document Transition Report false  
Entity File Number 001-41537  
Entity Registrant Name GRANITE RIDGE RESOURCES, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 88-2227812  
Entity Address, Address Line One 5217 McKinney Ave  
Entity Address, Address 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  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   133,037,900
Entity Central Index Key 0001928446  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
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 warrantexercisable for one share of common stock at an exerciseprice of $11.50 per share  
Trading Symbol GRNT WS  
Security Exchange Name NYSE