Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2021
Feb. 28, 2022
Jun. 30, 2021
Document Information [Line Items]      
Entity Central Index Key 0001288403    
Entity Registrant Name W&T OFFSHORE, INC.    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 1-32414    
Entity Incorporation, State or Country Code TX    
Entity Tax Identification Number 72-1121985    
Entity Address, Address Line One 5718 Westheimer Road, Suite 700    
Entity Address, City or Town Houston    
Entity Address, State or Province TX    
Entity Address, Postal Zip Code 77057-5745    
City Area Code 713    
Local Phone Number 626-8525    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 453,247,467
Entity Common Stock, Shares Outstanding   143,012,124  
Auditor Name Ernst & Young LLP    
Auditor Firm ID 42    
Auditor Location Houston, Texas    
Title of 12(b) Security Common Stock, par value $0.00001    
Trading Symbol WTI    
Security Exchange Name NYSE