1.0.0.3 false CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands false 1 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 3 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 4 $ false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 3 OPERATING ACTIVITIES 1 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 4 Net income 2 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 137158000 137158 false false 2 true true 346580000 346580 false false 3 true true 111999000 111999 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 5 Loss (income) from discontinued operations 2 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 4692000 4692 false false 2 false true -115388000 -115388 false false 3 false true -13772000 -13772 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 6 Income from continuing operations 2 us-gaap_IncomeLossFromContinuingOperations us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 141850000 141850 false false 2 false true 231192000 231192 false false 3 false true 98227000 98227 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 7 Adjustments to reconcile income from continuing operations to net cash provided by operating activities: 2 us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 8 Depreciation 3 us-gaap_Depreciation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 72939000 72939 false false 2 false true 56542000 56542 false false 3 false true 39234000 39234 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 9 Deferred income tax provision (benefit) 3 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 29038000 29038 false false 2 false true 89370000 89370 false false 3 false true -2522000 -2522 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 10 Non-cash restructuring and impairment charges 3 us-gaap_RestructuringSettlementAndImpairmentProvisions us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 3601000 3601 false false 2 false true 32386000 32386 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 11 Other 3 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesOther us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 18337000 18337 false false 2 false true 13448000 13448 false false 3 false true 15160000 15160 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 12 Decrease (increase) in current assets, net of effect of acquisitions: 2 us-gaap_IncreaseDecreaseInOperatingAssetsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 13 Receivables 3 us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 69772000 69772 false false 2 false true -92421000 -92421 false false 3 false true 7255000 7255 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 14 Inventories 3 us-gaap_IncreaseDecreaseInInventories us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -25076000 -25076 false false 2 false true -32005000 -32005 false false 3 false true 5095000 5095 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 15 Other current assets 3 us-gaap_IncreaseDecreaseInOtherOperatingAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 17624000 17624 false false 2 false true 23775000 23775 false false 3 false true 6738000 6738 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 16 Increase (decrease) in current liabilities, net of effect of acquisitions: 2 us-gaap_IncreaseDecreaseInOperatingLiabilitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 17 Accounts payable 3 us-gaap_IncreaseDecreaseInAccountsPayable us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -16286000 -16286 false false 2 false true 4768000 4768 false false 3 false true 7963000 7963 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 18 Accrued expenses and other current liabilities 3 us-gaap_IncreaseDecreaseInAccruedLiabilities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -27831000 -27831 false false 2 false true 4399000 4399 false false 3 false true -12983000 -12983 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 19 Cash flows provided by (used in) operating activities 2 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 283968000 283968 false false 2 false true 331454000 331454 false false 3 false true 164167000 164167 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 20 INVESTING ACTIVITIES 1 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 21 Additions to property, plant and equipment 2 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -96298000 -96298 false false 2 false true -99946000 -99946 false false 3 false true -147556000 -147556 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 22 Acquisitions, net of cash acquired 2 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -17089000 -17089 false false 3 false true -11650000 -11650 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 23 Other 2 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 3270000 3270 false false 2 false true -1726000 -1726 false false 3 false true 1712000 1712 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 24 Cash flows provided by (used in) investing activities 2 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -93028000 -93028 false false 2 false true -118761000 -118761 false false 3 false true -157494000 -157494 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 25 FINANCING ACTIVITIES 1 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 26 Proceeds from issuance of debt 2 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 340000000 340000 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 27 Retirements of debt 2 us-gaap_ProceedsFromRepaymentsOfDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -61597000 -61597 false false 2 false true -398709000 -398709 false false 3 false true -44679000 -44679 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 28 Sale of common stock 2 us-gaap_ProceedsFromIssuanceOfCommonStock us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 280464000 280464 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 29 Purchases of stock under stock repurchase program 2 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -34254000 -34254 false false 2 false true -64644000 -64644 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 30 Cash spun off to Financing 2 wlt_CashRelatedToSpinOffOfASubsidiary wlt false credit duration monetary Cash distributed with ownership spin-off. false false false false false false false false false 1 false true -33821000 -33821 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false Cash distributed with ownership spin-off. No authoritative reference available. false 31 Dividends paid 2 us-gaap_PaymentsOfDividends us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -21190000 -21190 false false 2 false true -16233000 -16233 false false 3 false true -10411000 -10411 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 32 Other 2 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 3719000 3719 false false 2 false true 5172000 5172 false false 3 false true 1185000 1185 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 33 Cash flows provided by (used in) financing activities 2 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -147143000 -147143 false false 2 false true 146050000 146050 false false 3 false true -53905000 -53905 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 34 Cash flows provided by (used in) continuing operations 1 wlt_NetCashProvidedByUsedInContinuingOperations wlt false debit duration monetary The net cash from (used in) the entity's operating activities,excluding those of discontinued operations, of the reporting... false false false false false false false false false 1 false true 43797000 43797 false false 2 false true 358743000 358743 false false 3 false true -47232000 -47232 false false 4 false false 0 0 false false The net cash from (used in) the entity's operating activities,excluding those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. No authoritative reference available. true 35 CASH FLOWS FROM DISCONTINUED OPERATIONS 1 us-gaap_NetCashProvidedByUsedInDiscontinuedOperationsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 36 Cash flows provided by (used in) operating activities 2 us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 19070000 19070 false false 2 false true 25563000 25563 false false 3 false true -23521000 -23521 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 37 Cash flows provided by (used in) investing activities 2 us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 27379000 27379 false false 2 false true 36210000 36210 false false 3 false true 4193000 4193 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 38 Cash flows provided by (used in) financing activities 2 us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -41385000 -41385 false false 2 false true -333458000 -333458 false false 3 false true -30196000 -30196 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 39 Cash flows provided by (used in) discontinued operations 2 us-gaap_NetCashProvidedByUsedInDiscontinuedOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 5064000 5064 false false 2 false true -271685000 -271685 false false 3 false true -49524000 -49524 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 40 Net increase (decrease) in cash and cash equivalents 1 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 48861000 48861 false false 2 false true 87058000 87058 false false 3 false true -96756000 -96756 false false 4 false false 0 0 false false No definition available. No authoritative reference available. true 41 Cash and cash equivalents at beginning of year 1 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 116074000 116074 false false 2 false true 27459000 27459 false false 3 false true 123731000 123731 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 42 Net increase (decrease) in cash and cash equivalents 1 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 48861000 48861 false false 2 false true 87058000 87058 false false 3 false true -96756000 -96756 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 43 Cash and cash equivalents at end of year 1 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 165279000 165279 false false 2 false true 116074000 116074 false false 3 false true 27459000 27459 false false 4 false true 123731000 123731 false false No definition available. No authoritative reference available. false 44 Add: Cash and cash equivalents of discontinued operations at beginning of year 1 us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents us-gaap true debit instant monetary No definition available. false false false false false false true false false 1 false true 1598000 1598 false false 2 false true 3155000 3155 false false 3 false true 3639000 3639 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 45 Less: Cash and cash equivalents of discontinued operations at end of year 1 us-gaap_DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents us-gaap true debit instant monetary No definition available. false false false false false false false true false 1 false true 1254000 1254 false false 2 false true 1598000 1598 false false 3 false true 3155000 3155 false false 4 false true 3639000 3639 false false No definition available. No authoritative reference available. false 46 SUPPLEMENTAL DISCLOSURES: 1 us-gaap_SupplementalCashFlowInformationAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 47 Interest paid, net of capitalized interest 2 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 9991000 9991 false false 2 false true 18638000 18638 false false 3 false true 19703000 19703 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 48 Income taxes paid 2 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 15326000 15326 false false 2 false true 27680000 27680 false false 3 false true 54818000 54818 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 50 Acquisition of Taft in 2008 and TRI in 2007: 3 wlt_NoncashOrPartNoncashAcquisitionsAbstract wlt false na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 51 Fair value of assets acquired 4 us-gaap_FairValueOfAssetsAcquired us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 71679000 71679 false false 3 false true 26260000 26260 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 52 Fair value of liabilities assumed 4 us-gaap_LiabilitiesAssumed us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -51579000 -51579 false false 3 false true -14216000 -14216 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 53 Less: Cash acquired 4 us-gaap_CashAcquiredFromAcquisition us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true -3011000 -3011 false false 3 false true -394000 -394 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 54 Net cash paid 4 us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid us-gaap true debit instant monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 17089000 17089 false false 3 false true 11650000 11650 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 55 Non-Cash Financing Activities: 2 wlt_CashFlowNoncashFinancingActivitiesDisclosureAbstract wlt false na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 56 One-year property insurance policy financing agreement 3 wlt_PropertyInsurancePolicyFinancingAgreement wlt false debit duration monetary The amount still owed associated with financing of property insurance policy for one year. false false false false false false false false false 1 false true 12710000 12710 false false 2 false true 13884000 13884 false false 3 false true 12516000 12516 false false 4 false false 0 0 false false The amount still owed associated with financing of property insurance policy for one year. No authoritative reference available. false 57 Dividend to spin off Financing 3 wlt_NonCashDividendRelatedToSpinOff wlt false credit duration monetary Dividend (non-cash) distributed relating to the spin-off of Financing business. false false false false false false false false false 1 false true 437407000 437407 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false Dividend (non-cash) distributed relating to the spin-off of Financing business. No authoritative reference available. false 58 Equipment acquired with specific financing arrangements 3 us-gaap_CapitalExpendituresIncurredButNotYetPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 false false 2 false true 41681000 41681 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. No authoritative reference available. false 59 Non-cash conversion of Senior Subordinated Convertible Notes into stock 3 wlt_NonCashConversionOfSeniorSubordinatedConvertibleNotesIntoCommonStock wlt false credit duration monetary This element represents the non-cash conversion of senior subordinated convertible notes into common stock of the entity... false false false false false false false false false 1 false false 0 0 false false 2 true true 785000 785 false false 3 false false 0 0 false false 4 false false 0 0 false false This element represents the non-cash conversion of senior subordinated convertible notes into common stock of the entity during the reporting period. No authoritative reference available. false false 4 56 false Thousands UnKnown UnKnown false true