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CONDENSED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Cash flows from operating activities: |  |
Net earnings | $ 61,411 us-gaap_ProfitLoss | $ 63,011 us-gaap_ProfitLoss
Adjustments to reconcile net earnings to net cash provided by operations: |  |
Depreciation and amortization | 45,766 us-gaap_DepreciationDepletionAndAmortization | 41,036 us-gaap_DepreciationDepletionAndAmortization
Provision for deferred income taxes | 7,182 us-gaap_DeferredIncomeTaxExpenseBenefit | 8,784 us-gaap_DeferredIncomeTaxExpenseBenefit
Amortization of unearned share-based compensation | 2,538 us-gaap_ShareBasedCompensation | 2,153 us-gaap_ShareBasedCompensation
Amortization of major maintenance costs | 4,932 kex_AmortizationOfMajorMaintenanceCosts | 3,684 kex_AmortizationOfMajorMaintenanceCosts
Other | (1,124)us-gaap_OtherNoncashIncomeExpense | (79)us-gaap_OtherNoncashIncomeExpense
Decrease in cash flows resulting from changes in operating assets and liabilities, net | (18,140)us-gaap_IncreaseDecreaseInOperatingCapital | (3,378)us-gaap_IncreaseDecreaseInOperatingCapital
Net cash provided by operating activities | 102,565 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 115,211 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities: |  |
Capital expenditures | (96,533)us-gaap_PaymentsToAcquireProductiveAssets | (62,257)us-gaap_PaymentsToAcquireProductiveAssets
Acquisition of marine equipment | (41,250)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired | 0 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Proceeds from disposition of assets | 10,240 us-gaap_ProceedsFromSaleOfProductiveAssets | 363 us-gaap_ProceedsFromSaleOfProductiveAssets
Net cash used in investing activities | (127,543)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (61,894)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities: |  |
Borrowings (payments) on bank credit facilities, net | 102,200 us-gaap_RepaymentsOfLinesOfCredit | (41,150)us-gaap_RepaymentsOfLinesOfCredit
Proceeds from exercise of stock options | 375 us-gaap_ProceedsFromStockOptionsExercised | 4,331 us-gaap_ProceedsFromStockOptionsExercised
Purchase of treasury stock | (98,011)us-gaap_PaymentsForRepurchaseOfCommonStock | 0 us-gaap_PaymentsForRepurchaseOfCommonStock
Payment of contingent liability | 0 kex_PaymentOfContingentLiability | (4,756)kex_PaymentOfContingentLiability
Excess tax benefit from equity compensation plans | 1,015 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 4,653 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Other | (409)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | (1,173)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash provided by (used in) financing activities | 5,170 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (38,095)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Increase (decrease) in cash and cash equivalents | (19,808)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 15,222 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of year | 24,299 us-gaap_CashAndCashEquivalentsAtCarryingValue | 4,022 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period | 4,491 us-gaap_CashAndCashEquivalentsAtCarryingValue | 19,244 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash paid during the period: |  |
Interest | 9,190 us-gaap_InterestPaidNet | 8,957 us-gaap_InterestPaidNet
Income taxes | $ 140 us-gaap_IncomeTaxesPaidNet | $ 565 us-gaap_IncomeTaxesPaidNet

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