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Long-Term Debt - Long-Term Debt (Parenthetical) (Details)
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Mar. 31, 2015
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Dec. 31, 2014
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| Debt Instrument [Line Items] | ||
| Senior notes interest rate | 8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage | |
| 8.50% Senior Notes, due June 2019 | ||
| Debt Instrument [Line Items] | ||
| Senior notes interest rate |
8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = wti_EightPointFivePercentSeniorNotesDueJuneTwoThousandNineteenMember |
8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = wti_EightPointFivePercentSeniorNotesDueJuneTwoThousandNineteenMember |
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- Definition
Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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