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Supplemental Oil and Gas Disclosures - Capitalized Costs Not Subject to Amortization (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Costs excluded by year incurred: | ||||
| Acquisition costs, Total | $ 75.5us-gaap_AcquisitionCostsCumulative | |||
| Capitalized interest not subject to amortization, Total | 34.3wti_CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortizationCumulative | |||
| Total costs not subject to amortization, Total | 109.8us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative | |||
| Acquisition costs | 2.6us-gaap_AcquisitionCosts | 5.7us-gaap_AcquisitionCosts | 7.0us-gaap_AcquisitionCosts | 60.2us-gaap_AcquisitionCosts |
| Capitalized interest not subject to amortization | 7.5wti_CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization | 7.3wti_CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization | 6.4wti_CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization | 13.1wti_CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization |
| Total costs not subject to amortization | $ 10.1us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | $ 13.0us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | $ 13.4us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization | $ 73.3us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization |
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- Definition
The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The capitalized costs incurred (excluded from amortization), as of the date of the balance sheet, to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of the capitalized costs incurred during the period of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of capitalized interest that is related to unproved properties, which is excluded from amortization under the full-cost method of accounting. No definition available.
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- Definition
The cumulative amount of capitalized interest that is related to unproved properties, which is excluded from amortization under the full-cost method of accounting. No definition available.
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