Supplemental Guarantor Information - Condensed Consolidating Statement of Operations (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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|
Condensed Income Statements Captions [Line Items] | ||
Revenues | $ 127,907us-gaap_Revenues | $ 254,516us-gaap_Revenues |
Operating costs and expenses: | ||
Lease operating expenses | 53,331us-gaap_LeaseOperatingExpense | 55,617us-gaap_LeaseOperatingExpense |
Production taxes | 637us-gaap_ProductionTaxExpense | 1,992us-gaap_ProductionTaxExpense |
Gathering and transportation | 4,824us-gaap_GasGatheringTransportationMarketingAndProcessingCosts | 5,296us-gaap_GasGatheringTransportationMarketingAndProcessingCosts |
Depreciation, depletion, amortization and accretion | 125,467us-gaap_DepreciationAmortizationAndAccretionNet | 123,306us-gaap_DepreciationAmortizationAndAccretionNet |
Ceiling test write-down of oil and natural gas properties | 260,390us-gaap_ImpairmentOfOilAndGasProperties | 0us-gaap_ImpairmentOfOilAndGasProperties |
General and administrative expenses | 20,766us-gaap_GeneralAndAdministrativeExpense | 23,588us-gaap_GeneralAndAdministrativeExpense |
Derivative loss | 0us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 7,492us-gaap_GainLossOnDerivativeInstrumentsNetPretax |
Total costs and expenses | 465,415us-gaap_CostsAndExpenses | 217,291us-gaap_CostsAndExpenses |
Operating income (loss) | (337,508)us-gaap_OperatingIncomeLoss | 37,225us-gaap_OperatingIncomeLoss |
Interest expense: | ||
Incurred | 22,944us-gaap_InterestCostsIncurred | 21,460us-gaap_InterestCostsIncurred |
Capitalized | (1,783)us-gaap_InterestCostsCapitalizedAdjustment | (2,072)us-gaap_InterestCostsCapitalizedAdjustment |
Income (loss) before income tax expense (benefit) | (358,669)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 17,837us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest |
Income tax expense (benefit) | (103,574)us-gaap_IncomeTaxExpenseBenefit | 6,648us-gaap_IncomeTaxExpenseBenefit |
Net income (loss) | (255,095)us-gaap_NetIncomeLoss | 11,189us-gaap_NetIncomeLoss |
Parent Company | ||
Condensed Income Statements Captions [Line Items] | ||
Revenues |
82,463us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
143,986us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Operating costs and expenses: | ||
Lease operating expenses |
37,386us-gaap_LeaseOperatingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
39,110us-gaap_LeaseOperatingExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Production taxes |
637us-gaap_ProductionTaxExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
1,992us-gaap_ProductionTaxExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Gathering and transportation |
2,548us-gaap_GasGatheringTransportationMarketingAndProcessingCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
3,338us-gaap_GasGatheringTransportationMarketingAndProcessingCosts / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Depreciation, depletion, amortization and accretion |
75,152us-gaap_DepreciationAmortizationAndAccretionNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
62,431us-gaap_DepreciationAmortizationAndAccretionNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Ceiling test write-down of oil and natural gas properties |
190,695us-gaap_ImpairmentOfOilAndGasProperties / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
|
General and administrative expenses |
12,388us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
11,445us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Derivative loss |
7,492us-gaap_GainLossOnDerivativeInstrumentsNetPretax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
|
Total costs and expenses |
318,806us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
125,808us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Operating income (loss) |
(236,343)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
18,178us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Earnings (loss) of affiliates |
(65,627)wti_IncomeLossFromAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
12,451wti_IncomeLossFromAffiliates / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Interest expense: | ||
Incurred |
22,230us-gaap_InterestCostsIncurred / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
20,679us-gaap_InterestCostsIncurred / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Capitalized |
(1,069)us-gaap_InterestCostsCapitalizedAdjustment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
(1,291)us-gaap_InterestCostsCapitalizedAdjustment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Income (loss) before income tax expense (benefit) |
(323,131)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
11,241us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Income tax expense (benefit) |
(68,036)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
52us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Net income (loss) |
(255,095)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
11,189us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |
Guarantor Subsidiaries | ||
Condensed Income Statements Captions [Line Items] | ||
Revenues |
45,444us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
110,530us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Operating costs and expenses: | ||
Lease operating expenses |
15,945us-gaap_LeaseOperatingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
16,507us-gaap_LeaseOperatingExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Gathering and transportation |
2,276us-gaap_GasGatheringTransportationMarketingAndProcessingCosts / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
1,958us-gaap_GasGatheringTransportationMarketingAndProcessingCosts / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Depreciation, depletion, amortization and accretion |
50,315us-gaap_DepreciationAmortizationAndAccretionNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
60,875us-gaap_DepreciationAmortizationAndAccretionNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Ceiling test write-down of oil and natural gas properties |
69,695us-gaap_ImpairmentOfOilAndGasProperties / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
|
General and administrative expenses |
8,378us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
12,143us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Total costs and expenses |
146,609us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
91,483us-gaap_CostsAndExpenses / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Operating income (loss) |
(101,165)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
19,047us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Interest expense: | ||
Incurred |
714us-gaap_InterestCostsIncurred / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
781us-gaap_InterestCostsIncurred / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Capitalized |
(714)us-gaap_InterestCostsCapitalizedAdjustment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
(781)us-gaap_InterestCostsCapitalizedAdjustment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Income (loss) before income tax expense (benefit) |
(101,165)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
19,047us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Income tax expense (benefit) |
(35,538)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
6,596us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Net income (loss) |
(65,627)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
12,451us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |
Eliminations | ||
Operating costs and expenses: | ||
Earnings (loss) of affiliates |
65,627wti_IncomeLossFromAffiliates / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |
(12,451)wti_IncomeLossFromAffiliates / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |
Interest expense: | ||
Income (loss) before income tax expense (benefit) |
65,627us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |
(12,451)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |
Net income (loss) |
$ 65,627us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |
$ (12,451)us-gaap_NetIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember |
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- Definition
Total costs of sales and operating expenses for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Cost incurred related to the gas activities, such as transportation, marketing and processing crude oil, natural gas and refined petroleum products. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of interest costs capitalized disclosed as an adjusting item to interest costs incurred. No definition available.
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- Definition
Total interest costs incurred during the period and either capitalized or charged against earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of lease operating expense related to property used in oil and gas production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition
A tax assessed on oil and gas production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Income loss from affiliates. No definition available.
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