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Share-Based and Cash-Based Incentive Compensation - Summary of Incentive Compensation Expense (Parenthetical) (Details) (CEO's 2013 Award, USD $)
In Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2014
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CEO's 2013 Award
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| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] | |
| Reclassification of incentive compensation |
$ 0.7wti_ReclassificationOfCashBasedIncentiveCompensationToShareBasedCompensation / us-gaap_AwardTypeAxis = wti_TwoThousandThirteenAnnualIncentiveCompensationAwardMember |
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- Details
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- Definition
Reclassification of cash-based compensation to share-based compensation originally recorded in prior periods. No definition available.
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