2.2.0.7 false Consolidated Statements of Income (Unaudited) (USD $) 0120 - Statement - Consolidated Statements of Income (Unaudited) true false In Thousands, except Per Share data false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 2 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 4 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ 3 REVENUES AND OTHER INCOME: 1 us-gaap_RevenuesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 4 Oil and natural gas sales 2 us-gaap_OilAndGasSalesRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 365239000 365239 false false false 2 true true false false 256074000 256074 false false false 3 true true false false 1068961000 1068961 false false false 4 true true false false 616552000 616552 false false false xbrli:monetaryItemType monetary Revenue from the sale of oil and gas during the period. No authoritative reference available. false 5 Gain on hedging activities 2 us-gaap_CashFlowHedgeGainReclassifiedToEarnings us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 4383000 4383 false false false 2 false true false false 7774000 7774 false false false 3 false true false false 19641000 19641 false false false 4 false true false false 28072000 28072 false false false xbrli:monetaryItemType monetary The amount of gains on a cash flow hedge reclassified in the period to earnings from accumulated other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 45 -Subparagraph b(1) false 6 Amortization of deferred gain on sale 2 us-gaap_RecognitionOfDeferredRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 3854000 3854 false false false 2 false true false false 4222000 4222 false false false 3 false true false false 11613000 11613 false false false 4 false true false false 12595000 12595 false false false xbrli:monetaryItemType monetary The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by (used in) operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A -Subsection 1 false 7 Gain on sale of properties 2 us-gaap_GainLossOnSaleOfOilAndGasProperty us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false true false false 1101000 1101 false false false 3 false true false false 1918000 1918 false false false 4 false true false false 5709000 5709 false false false xbrli:monetaryItemType monetary Gain or loss recorded from sale of oil and gas properties, includes the realized gains (losses) on the sale of proved and unproved oil and gas properties. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 41, 44, 45, 46, 47 false 8 Interest income and other 2 us-gaap_OtherIncome us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 258000 258 false false false 2 false true false false 156000 156 false false false 3 false true false false 498000 498 false false false 4 false true false false 396000 396 false false false xbrli:monetaryItemType monetary Reflects the sum of all other revenue and income recognized by the entity in the period not otherwise specified in the income statement. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 4 -Article 7 true 9 Total revenues and other income 2 us-gaap_Revenues us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 373734000 373734 false false false 2 false true false false 269327000 269327 false false false 3 false true false false 1102631000 1102631 false false false 4 false true false false 663324000 663324 false false false xbrli:monetaryItemType monetary Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 true 10 COSTS AND EXPENSES: 1 us-gaap_CostsAndExpensesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 11 Lease operating 2 us-gaap_LeaseOperatingExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 69001000 69001 false false false 2 false true false false 58807000 58807 false false false 3 false true false false 197586000 197586 false false false 4 false true false false 177343000 177343 false false false xbrli:monetaryItemType monetary Lease expense related to property used in oil and gas production. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 13 -Paragraph 15 false 12 Production taxes 2 us-gaap_ProductionTaxExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 26193000 26193 false false false 2 false true false false 18792000 18792 false false false 3 false true false false 77341000 77341 false false false 4 false true false false 43225000 43225 false false false xbrli:monetaryItemType monetary A tax assessed on oil and gas production. No authoritative reference available. false 13 Depreciation, depletion and amortization 2 us-gaap_DepreciationDepletionAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 97704000 97704 false false false 2 false true false false 101273000 101273 false false false 3 false true false false 289836000 289836 false false false 4 false true false false 301622000 301622 false false false xbrli:monetaryItemType monetary The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. No authoritative reference available. false 14 Exploration and impairment 2 wll_ExplorationExpenseAndImpairmentOfOilAndGasProperties wll false debit duration Exploration Expense and Impairment of Oil and Gas Properties. false false false false false false false false false false false verboselabel false 1 false true false false 10500000 10500 false false false 2 false true false false 12422000 12422 false false false 3 false true false false 37915000 37915 false false false 4 false true false false 39528000 39528 false false false xbrli:monetaryItemType monetary Exploration Expense and Impairment of Oil and Gas Properties. No authoritative reference available. false 15 General and administrative 2 us-gaap_GeneralAndAdministrativeExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 19480000 19480 false false false 2 false true false false 11314000 11314 false false false 3 false true false false 48516000 48516 false false false 4 false true false false 30576000 30576 false false false xbrli:monetaryItemType monetary 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. No authoritative reference available. false 16 Interest expense 2 us-gaap_InterestExpense us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 14579000 14579 false false false 2 false true false false 15647000 15647 false false false 3 false true false false 45903000 45903 false false false 4 false true false false 49020000 49020 false false false xbrli:monetaryItemType monetary The cost of borrowed funds accounted for as interest that was charged against earnings during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 21 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 9 -Subsection II Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 false 17 Loss on early extinguishment of debt 2 us-gaap_GainsLossesOnExtinguishmentOfDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 6235000 6235 false false false 2 false false false false 0 0 false false false 3 false true false false 6235000 6235 false false false 4 false false false false 0 0 false false false xbrli:monetaryItemType monetary Amount represents the difference between the fair value of the payments made and the carrying amount of the debt at the time of its extinguishment. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 26 -Paragraph 20, 21 false 18 Change in Production Participation Plan liability 2 us-gaap_IncreaseDecreaseInProductionParticipationPlanLiability us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 3858000 3858 false false false 2 false true false false -678000 -678 false false false 3 false true false false 9550000 9550 false false false 4 false true false false 3002000 3002 false false false xbrli:monetaryItemType monetary The net change during the reporting period in obligations arising from employee benefits that are based on cash flows generated by interests in oil and gas properties acquired or developed during the year. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 19 Commodity derivative (gain) loss, net 2 us-gaap_GainLossOnOilAndGasHedgingActivity us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false 31765000 31765 false false false 2 false true false false -10391000 -10391 false false false 3 false true false false -46654000 -46654 false false false 4 false true false false 171906000 171906 false false false xbrli:monetaryItemType monetary Gain (loss) incurred in oil and gas hedging activities. No authoritative reference available. true 20 Total costs and expenses 2 us-gaap_CostsAndExpenses us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 279315000 279315 false false false 2 false true false false 207186000 207186 false false false 3 false true false false 666228000 666228 false false false 4 false true false false 816222000 816222 false false false xbrli:monetaryItemType monetary Total costs of sales and operating expenses for the period. No authoritative reference available. true 21 INCOME (LOSS) BEFORE INCOME TAXES 1 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 94419000 94419 false false false 2 false true false false 62141000 62141 false false false 3 false true false false 436403000 436403 false false false 4 false true false false -152898000 -152898 false false false xbrli:monetaryItemType monetary Sum of operating profit and nonoperating income (expense) before income (loss) from equity method investments, income taxes, extraordinary items, cumulative effects of changes in accounting principles, and noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 false 22 INCOME TAX EXPENSE (BENEFIT): 1 us-gaap_IncomeTaxExpenseBenefitAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 23 Current 2 us-gaap_CurrentIncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false -170000 -170 false false false 2 false true false false -507000 -507 false false false 3 false true false false 6468000 6468 false false false 4 false true false false -1046000 -1046 false false false xbrli:monetaryItemType monetary The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a false 24 Deferred 2 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 36057000 36057 false false false 2 false true false false 26793000 26793 false false false 3 false true false false 159475000 159475 false false false 4 false true false false -50785000 -50785 false false false xbrli:monetaryItemType monetary The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 true 25 Total income tax expense (benefit) 2 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 35887000 35887 false false false 2 false true false false 26286000 26286 false false false 3 false true false false 165943000 165943 false false false 4 false true false false -51831000 -51831 false false false xbrli:monetaryItemType monetary The sum of the current income tax expense (benefit) and the deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, b true 26 NET INCOME (LOSS) 1 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false terselabel false 1 false true false false 58532000 58532 false false false 2 false true false false 35855000 35855 false false false 3 false true false false 270460000 270460 false false false 4 false true false false -101067000 -101067 false false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 false 27 Preferred stock dividends 1 wll_PreferredStockDividendsAndPremiumOnInducedConversionCash wll false credit duration Preferred stock dividends and premium on induced conversion, cash. false false false false false false false false false false false totallabel false 1 false true false false -52920000 -52920 false false false 2 false true false false -4911000 -4911 false false false 3 false true false false -63701000 -63701 false false false 4 false true false false -4911000 -4911 false false false xbrli:monetaryItemType monetary Preferred stock dividends and premium on induced conversion, cash. No authoritative reference available. true 28 NET INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS 1 us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 true true false false 5612000 5612 false false false 2 true true false false 30944000 30944 false false false 3 true true false false 206759000 206759 false false false 4 true true false false -105978000 -105978 false false false xbrli:monetaryItemType monetary Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 9 true 29 EARNINGS (LOSS) PER COMMON SHARE: 1 us-gaap_EarningsPerShareAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 30 Basic 2 us-gaap_EarningsPerShareBasic us-gaap true na duration No definition available. false false false false false false false false false false false totallabel true 1 true true false false 0.12 0.12 false false false 2 true true false false 0.59 0.59 false false false 3 true true false false 4.04 4.04 false false false 4 true true false false -2.15 -2.15 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 36, 37, 38 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 true 31 Diluted 2 us-gaap_EarningsPerShareDiluted us-gaap true na duration No definition available. false false false false false false false false false false false totallabel true 1 true true false false 0.12 0.12 false false false 2 true true false false 0.59 0.59 false false false 3 true true false false 4 4 false false false 4 true true false false -2.15 -2.15 false false false us-types:perShareItemType decimal The amount of net income or loss for the period per each share of common stock and dilutive common stock equivalents outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 11, 12, 36 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 18 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 21 -Article 9 true 32 WEIGHTED AVERAGE SHARES OUTSTANDING: 1 us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false xbrli:stringItemType string No definition available. false 33 Basic 2 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 52148000 52148 false false false 2 false true false false 50845000 50845 false false false 3 false true false false 51356000 51356 false false false 4 false true false false 49774000 49774 false false false xbrli:sharesItemType shares Number of [basic] shares, after adjustment for contingently issuable shares and other shares not deemed outstanding, determined by relating the portion of time within a reporting period that common shares have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 171 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 true 34 Diluted 2 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 52453000 52453 false false false 2 false true false false 51174000 51174 false false false 3 false true false false 52096000 52096 false false false 4 false true false false 49774000 49774 false false false xbrli:sharesItemType shares The average number of shares issued and outstanding that are used in calculating diluted EPS, determined based on the timing of issuance of shares in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -Subparagraph a Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 8 true 4 32 false Thousands Thousands NoRounding false true