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

Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Fair Value Measurements - Schedule of Fair Value of Derivatives and Long-Term Debt (Parenthetical) (Details)

v3.10.0.1

Fair Value Measurements - Schedule of Fair Value of Derivatives and Long-Term Debt (Parenthetical) (Details)		12 Months Ended
	Oct. 18, 2018	Dec. 31, 2018	Dec. 31, 2017
9.75% Senior Second Lien Notes, Due November 2023
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument interest rate	9.75%	9.75%	9.75%
Debt instrument maturity date	Nov. 01, 2023	Nov. 01, 2023	Nov. 01, 2023
11.00% 1.5 Lien Term Loan, Due November 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument interest rate		11.00%	11.00%
Debt instrument maturity date		Nov. 15, 2019	Nov. 15, 2019
9.00 % Second Lien Term Loan, Due May 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument interest rate		9.00%	9.00%
Debt instrument maturity date		May 15, 2020	May 15, 2020
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument interest rate		9.00%	9.00%
Debt instrument maturity date		May 15, 2020	May 15, 2020
Debt instrument paid in kind interest rate		10.75%	10.75%
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument interest rate		8.50%	8.50%
Debt instrument maturity date		Jun. 15, 2021	Jun. 15, 2021
Debt instrument paid in kind interest rate		10.00%	10.00%
8.50% Unsecured Senior Notes, Due June 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument interest rate		8.50%	8.50%
Debt instrument maturity date		Jun. 15, 2019	Jun. 15, 2019

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.22(a)(2))
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Debt instrument stated paid in kind interest rate percentage.

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