W&T Offshore, Inc. Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments - Summary of Open Commodity Derivative Contracts (Details)

Derivative Financial Instruments - Summary of Open Commodity Derivative Contracts (Details)	9 Months Ended
	Sep. 30, 2021 MMBTU bbl $ / MMBTU $ / bbl
NYMEX Crude Oil Swap \| Oct 2021 - Dec 2021
Average daily volume \| bbl	4,000
Total volume \| bbl	368,000
Weighted Price (in dollars per share) \| $ / bbl	42.06
NYMEX Crude Oil Swap \| Jan 2022 - Nov 2022
Average daily volume \| bbl	2,525
Total volume \| bbl	843,256
Weighted Price (in dollars per share) \| $ / bbl	49.99
NYMEX Crude Oil Collar \| Oct 2021 - Dec 2021
Average daily volume \| bbl	1,762
Total volume \| bbl	162,084
NYMEX Crude Oil Collar \| Oct 2021 - Dec 2021 \| Put Option
Weighted Price (in dollars per share) \| $ / bbl	39.55
NYMEX Crude Oil Collar \| Oct 2021 - Dec 2021 \| Call Option
Weighted Price (in dollars per share) \| $ / bbl	58.12
NYMEX Crude Oil Collar \| Jan 2022 - Nov 2022
Average daily volume \| bbl	2,428
Total volume \| bbl	811,096
NYMEX Crude Oil Collar \| Jan 2022 - Nov 2022 \| Put Option
Weighted Price (in dollars per share) \| $ / bbl	41.71
NYMEX Crude Oil Collar \| Jan 2022 - Nov 2022 \| Call Option
Weighted Price (in dollars per share) \| $ / bbl	58.91
NYMEX Natural Gas Henry Hub Call \| Oct 2021 - Dec 2021
Average daily volume	80,000
Total volume	7,360,000
NYMEX Natural Gas Henry Hub Call \| Oct 2021 - Dec 2021 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.25
NYMEX Natural Gas Henry Hub Call \| Jan 2022 - Dec 2022
Average daily volume	77,000
Total volume	28,105,000
NYMEX Natural Gas Henry Hub Call \| Jan 2022 - Dec 2022 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.24
NYMEX Natural Gas Henry Hub Call \| Jan 2023 - Dec 2023
Average daily volume	70,000
Total volume	25,550,000
NYMEX Natural Gas Henry Hub Call \| Jan 2023 - Dec 2023 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.50
NYMEX Natural Gas Henry Hub Call \| Jan 2024 - Dec 2024
Average daily volume	65,000
Total volume	23,790,000
NYMEX Natural Gas Henry Hub Call \| Jan 2024 - Dec 2024 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.50
NYMEX Natural Gas Henry Hub Call \| Jan 2025 - Mar 2025
Average daily volume	62,000
Total volume	5,580,000
NYMEX Natural Gas Henry Hub Call \| Jan 2025 - Mar 2025 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.50
NYMEX Natural Gas Henry Hub Collar \| Oct 2021 - Dec 2021
Average daily volume	70,000
Total volume	6,440,000
NYMEX Natural Gas Henry Hub Collar \| Oct 2021 - Dec 2021 \| Put Option
Weighted Price (in dollars per share) \| $ / MMBTU	1.98
NYMEX Natural Gas Henry Hub Collar \| Oct 2021 - Dec 2021 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.00
NYMEX Natural Gas Henry Hub Collar \| Jan 2022 - Dec 2022
Average daily volume	47,370
Total volume	17,290,000
NYMEX Natural Gas Henry Hub Collar \| Jan 2022 - Dec 2022 \| Put Option
Weighted Price (in dollars per share) \| $ / MMBTU	1.89
NYMEX Natural Gas Henry Hub Collar \| Jan 2022 - Dec 2022 \| Call Option
Weighted Price (in dollars per share) \| $ / MMBTU	3.17
NYMEX Natural Gas Henry Hub Swap \| Oct 2021 - Dec 2021
Average daily volume	10,000
Total volume	920,000
Weighted Price (in dollars per share) \| $ / MMBTU	2.62
NYMEX Natural Gas Henry Hub Swap \| Oct 2021 - Dec 2021
Average daily volume	81,522
Total volume	7,500,000
Weighted Price (in dollars per share) \| $ / MMBTU	3.06
NYMEX Natural Gas Henry Hub Swap \| Jan 2022 - Nov 2022
Average daily volume	17,160
Total volume	5,731,485
Weighted Price (in dollars per share) \| $ / MMBTU	2.60
NYMEX Natural Gas Henry Hub Swap \| Jan 2022 - Dec 2022
Average daily volume	78,904
Total volume	28,800,000
Weighted Price (in dollars per share) \| $ / MMBTU	2.69
NYMEX Natural Gas Henry Hub Swap \| Jan 2023 - Dec 2023
Average daily volume	72,329
Total volume	26,400,000
Weighted Price (in dollars per share) \| $ / MMBTU	2.48
NYMEX Natural Gas Henry Hub Swap \| Jan 2024 - Dec 2024
Average daily volume	65,574
Total volume	24,000,000
Weighted Price (in dollars per share) \| $ / MMBTU	2.46
NYMEX Natural Gas Henry Hub Swap \| Jan 2025 - Mar 2025
Average daily volume	63,333
Total volume	5,700,000
Weighted Price (in dollars per share) \| $ / MMBTU	2.72
NYMEX Natural Gas Henry Hub Put \| Apr 2025 - Dec 2025
Average daily volume	62,182
Total volume	17,100,000
NYMEX Natural Gas Henry Hub Put \| Apr 2025 - Dec 2025 \| Put Option
Weighted Price (in dollars per share) \| $ / MMBTU	2.27
NYMEX Natural Gas Henry Hub Put \| Jan 2026 - Dec 2026
Average daily volume	55,890
Total volume	20,400,000
NYMEX Natural Gas Henry Hub Put \| Jan 2026 - Dec 2026 \| Put Option
Weighted Price (in dollars per share) \| $ / MMBTU	2.35
NYMEX Natural Gas Henry Hub Put \| Jan 2027 - Dec 2027
Average daily volume	52,603
Total volume	19,200,000
NYMEX Natural Gas Henry Hub Put \| Jan 2027 - Dec 2027 \| Put Option
Weighted Price (in dollars per share) \| $ / MMBTU	2.37
NYMEX Natural Gas Henry Hub Put \| Jan 2028 - Apr 2028
Average daily volume	49,587
Total volume	6,000,000
NYMEX Natural Gas Henry Hub Put \| Jan 2028 - Apr 2028 \| Put Option
Weighted Price (in dollars per share) \| $ / MMBTU	2.50