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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
CASH PROVIDED BY OPERATIONS:      
Net earnings $ 6,523us-gaap_NetIncomeLoss $ 21,610us-gaap_NetIncomeLoss $ 27,791us-gaap_NetIncomeLoss
Adjustments to reconcile net earnings to net cash from operating activities -      
Depreciation, depletion and amortization 24,615us-gaap_DepreciationDepletionAndAmortization 22,275us-gaap_DepreciationDepletionAndAmortization 20,714us-gaap_DepreciationDepletionAndAmortization
Property sales (gains) oil and gas (2,528)us-gaap_GainLossOnSaleOfOilAndGasProperty 0us-gaap_GainLossOnSaleOfOilAndGasProperty (2,203)us-gaap_GainLossOnSaleOfOilAndGasProperty
Property sale (gains) other (1,028)us-gaap_GainLossOnDispositionOfAssets (683)us-gaap_GainLossOnDispositionOfAssets (4,095)us-gaap_GainLossOnDispositionOfAssets
Dry hole costs incurred 1,034us-gaap_ResultsOfOperationsDryHoleCosts 233us-gaap_ResultsOfOperationsDryHoleCosts 43us-gaap_ResultsOfOperationsDryHoleCosts
Impairment of oil and natural gas properties 8,009us-gaap_ImpairmentOfOilAndGasProperties 2,630us-gaap_ImpairmentOfOilAndGasProperties 5,555us-gaap_ImpairmentOfOilAndGasProperties
Provision for doubtful accounts (73)us-gaap_ProvisionForDoubtfulAccounts 46us-gaap_ProvisionForDoubtfulAccounts (51)us-gaap_ProvisionForDoubtfulAccounts
Deferred income taxes (6,151)ae_DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations 3,161ae_DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations 5,378ae_DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations
Net change in fair value contracts 402us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts (389)us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts 1,377us-gaap_UnrealizedGainLossOnDerivativesAndCommodityContracts
Decrease (increase) in accounts receivable 99,749us-gaap_IncreaseDecreaseInAccountsReceivable (4,770)us-gaap_IncreaseDecreaseInAccountsReceivable (4,820)us-gaap_IncreaseDecreaseInAccountsReceivable
Decrease (increase) in inventories 14,135us-gaap_IncreaseDecreaseInInventories 606us-gaap_IncreaseDecreaseInInventories (9,579)us-gaap_IncreaseDecreaseInInventories
Decrease (increase) in income tax receivable 1,127us-gaap_IncreaseDecreaseInIncomeTaxesReceivable (898)us-gaap_IncreaseDecreaseInIncomeTaxesReceivable (719)us-gaap_IncreaseDecreaseInIncomeTaxesReceivable
Decrease (increase) in prepayments 5,839us-gaap_IncreaseDecreaseInPrepaidExpense (8,687)us-gaap_IncreaseDecreaseInPrepaidExpense 2,559us-gaap_IncreaseDecreaseInPrepaidExpense
Increase (decrease) in accounts payable (104,887)us-gaap_IncreaseDecreaseInAccountsPayable 7,809us-gaap_IncreaseDecreaseInAccountsPayable 10,474us-gaap_IncreaseDecreaseInAccountsPayable
Increase (decrease) in accrued and other liabilities 448us-gaap_IncreaseDecreaseInAccruedLiabilities (516)us-gaap_IncreaseDecreaseInAccruedLiabilities 1,227us-gaap_IncreaseDecreaseInAccruedLiabilities
Other changes, net (81)us-gaap_OtherOperatingActivitiesCashFlowStatement 1,549us-gaap_OtherOperatingActivitiesCashFlowStatement 843us-gaap_OtherOperatingActivitiesCashFlowStatement
Net cash provided by operating activities 47,133us-gaap_NetCashProvidedByUsedInOperatingActivities 43,976us-gaap_NetCashProvidedByUsedInOperatingActivities 54,494us-gaap_NetCashProvidedByUsedInOperatingActivities
INVESTING ACTIVITIES:      
Property and equipment additions (30,523)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (27,602)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment (51,012)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Insurance and state collateral (deposits) refunds (493)us-gaap_IncreaseDecreaseInDepositOtherAssets (1,179)us-gaap_IncreaseDecreaseInDepositOtherAssets (582)us-gaap_IncreaseDecreaseInDepositOtherAssets
Proceeds from property sales 7,045us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment 1,082us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment 6,342us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Proceeds from the sale of discontinued operations 0us-gaap_ProceedsFromDivestitureOfBusinesses 0us-gaap_ProceedsFromDivestitureOfBusinesses 3,546us-gaap_ProceedsFromDivestitureOfBusinesses
Net cash (used in) investing activities (23,971)us-gaap_NetCashProvidedByUsedInInvestingActivities (27,699)us-gaap_NetCashProvidedByUsedInInvestingActivities (41,706)us-gaap_NetCashProvidedByUsedInInvestingActivities
FINANCING ACTIVITIES:      
Dividend payments (3,711)us-gaap_PaymentsOfDividends (2,783)us-gaap_PaymentsOfDividends (2,615)us-gaap_PaymentsOfDividends
Net cash (used in) financing activities (3,711)us-gaap_NetCashProvidedByUsedInFinancingActivities (2,783)us-gaap_NetCashProvidedByUsedInFinancingActivities (2,615)us-gaap_NetCashProvidedByUsedInFinancingActivities
Increase (decrease) in cash and cash equivalents 19,451us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 13,494us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease 10,173us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year 60,733us-gaap_CashAndCashEquivalentsAtCarryingValue 47,239us-gaap_CashAndCashEquivalentsAtCarryingValue 37,066us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year $ 80,184us-gaap_CashAndCashEquivalentsAtCarryingValue $ 60,733us-gaap_CashAndCashEquivalentsAtCarryingValue $ 47,239us-gaap_CashAndCashEquivalentsAtCarryingValue