| 
           Supplemental Condensed Consolidating Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified 
         | 
        
           Mar. 31, 2015 
         | 
        
           Dec. 31, 2014 
         | 
        
           Mar. 31, 2014 
         | 
        
           Dec. 31, 2013 
         | 
      
      
        | Current assets: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Cash and cash equivalents | 
        
$ 33,691us-gaap_CashAndCashEquivalentsAtCarryingValue
 | 
        
$ 40,867us-gaap_CashAndCashEquivalentsAtCarryingValue
 | 
        
$ 22,290us-gaap_CashAndCashEquivalentsAtCarryingValue
 | 
        
$ 31,335us-gaap_CashAndCashEquivalentsAtCarryingValue
 | 
      
      
        | Trade, net of allowance for doubtful accounts of $1,926 and $1,955 in 2015 and 2014, respectively | 
        
38,949us-gaap_ReceivablesNetCurrent
 | 
        
33,390us-gaap_ReceivablesNetCurrent
 | 
         
 | 
         
 | 
      
      
        | Other, net of allowance for doubtful accounts of $437 in each of 2015 and 2014 | 
        
2,567us-gaap_AccountsAndOtherReceivablesNetCurrent
 | 
        
2,062us-gaap_AccountsAndOtherReceivablesNetCurrent
 | 
         
 | 
         
 | 
      
      
        | Inventories, net | 
        
26,189us-gaap_InventoryNet
 | 
        
26,869us-gaap_InventoryNet
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
2,167us-gaap_DeferredTaxAssetsNetCurrent
 | 
        
1,996us-gaap_DeferredTaxAssetsNetCurrent
 | 
         
 | 
         
 | 
      
      
        | Prepaid expenses and other | 
        
4,081us-gaap_PrepaidExpenseAndOtherAssetsCurrent
 | 
        
2,661us-gaap_PrepaidExpenseAndOtherAssetsCurrent
 | 
         
 | 
         
 | 
      
      
        | Escrow deposits | 
        
2,800us-gaap_EscrowDeposit
 | 
        
0us-gaap_EscrowDeposit
 | 
         
 | 
         
 | 
      
      
        | Total current assets | 
        
110,444us-gaap_AssetsCurrent
 | 
        
107,845us-gaap_AssetsCurrent
 | 
         
 | 
         
 | 
      
      
        | Property, Plant and Equipment [Abstract] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Property and equipment | 
        
1,171,548us-gaap_PropertyPlantAndEquipmentGross
 | 
        
1,171,267us-gaap_PropertyPlantAndEquipmentGross
 | 
         
 | 
         
 | 
      
      
        | Accumulated depreciation | 
        
(315,399)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
 | 
        
(308,141)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
 | 
         
 | 
         
 | 
      
      
        | Net property and equipment | 
        
856,149us-gaap_PropertyPlantAndEquipmentNet
 | 
        
863,126us-gaap_PropertyPlantAndEquipmentNet
 | 
         
 | 
         
 | 
      
      
        | Equity investments and advances | 
        
31,397era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies
 | 
        
31,753era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies
 | 
         
 | 
         
 | 
      
      
        | Investments in consolidated subsidiaries | 
        
0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
 | 
        
0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
 | 
         
 | 
         
 | 
      
      
        | Goodwill | 
        
352us-gaap_Goodwill
 | 
        
352us-gaap_Goodwill
 | 
         
 | 
         
 | 
      
      
        | Intercompany Receivables | 
        
0era_IntercompanyReceivables
 | 
        
0era_IntercompanyReceivables
 | 
         
 | 
         
 | 
      
      
        | Other assets | 
        
15,156us-gaap_OtherAssetsNoncurrent
 | 
        
14,098us-gaap_OtherAssetsNoncurrent
 | 
         
 | 
         
 | 
      
      
        | Total assets | 
        
1,013,498us-gaap_Assets
 | 
        
1,017,174us-gaap_Assets
 | 
         
 | 
         
 | 
      
      
        | Current liabilities: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Accounts payable and accrued expenses | 
        
13,904us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
 | 
        
15,120us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
 | 
         
 | 
         
 | 
      
      
        | Accrued wages and benefits | 
        
6,822us-gaap_EmployeeRelatedLiabilitiesCurrent
 | 
        
7,521us-gaap_EmployeeRelatedLiabilitiesCurrent
 | 
         
 | 
         
 | 
      
      
        | Accrued interest | 
        
4,791us-gaap_InterestPayableCurrent
 | 
        
949us-gaap_InterestPayableCurrent
 | 
         
 | 
         
 | 
      
      
        | Current portion of long-term debt | 
        
26,729us-gaap_LongTermDebtCurrent
 | 
        
27,426us-gaap_LongTermDebtCurrent
 | 
         
 | 
         
 | 
      
      
        | Derivative instruments | 
        
275us-gaap_DerivativeLiabilitiesCurrent
 | 
        
1,109us-gaap_DerivativeLiabilitiesCurrent
 | 
         
 | 
         
 | 
      
      
        | Accrued income taxes | 
        
37us-gaap_AccruedIncomeTaxesCurrent
 | 
        
267us-gaap_AccruedIncomeTaxesCurrent
 | 
         
 | 
         
 | 
      
      
        | Other current liabilities | 
        
3,121us-gaap_OtherLiabilitiesCurrent
 | 
        
3,162us-gaap_OtherLiabilitiesCurrent
 | 
         
 | 
         
 | 
      
      
        | Total current liabilities | 
        
55,679us-gaap_LiabilitiesCurrent
 | 
        
55,554us-gaap_LiabilitiesCurrent
 | 
         
 | 
         
 | 
      
      
        | Long-term debt | 
        
277,424us-gaap_LongTermDebtNoncurrent
 | 
        
282,118us-gaap_LongTermDebtNoncurrent
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
217,200us-gaap_DeferredTaxLiabilitiesNoncurrent
 | 
        
217,027us-gaap_DeferredTaxLiabilitiesNoncurrent
 | 
         
 | 
         
 | 
      
      
        | Intercompany Payables | 
        
0era_IntercompanyPayables
 | 
        
0era_IntercompanyPayables
 | 
         
 | 
         
 | 
      
      
        | Other liabilities | 
        
1,937era_DeferredGainsAndOtherLiabilities
 | 
        
2,111era_DeferredGainsAndOtherLiabilities
 | 
         
 | 
         
 | 
      
      
        | Total liabilities | 
        
552,240us-gaap_Liabilities
 | 
        
556,810us-gaap_Liabilities
 | 
         
 | 
         
 | 
      
      
        | Era Group Inc. stockholders’ equity: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Common stock, $0.01 par value, 60,000,000 shares authorized; 20,582,841 outstanding, exclusive of treasury shares | 
        
206us-gaap_CommonStockValue
 | 
        
204us-gaap_CommonStockValue
 | 
         
 | 
         
 | 
      
      
        | Additional paid-in capital | 
        
430,251us-gaap_AdditionalPaidInCapital
 | 
        
429,109us-gaap_AdditionalPaidInCapital
 | 
         
 | 
         
 | 
      
      
        | Retained earnings | 
        
31,755us-gaap_RetainedEarningsAccumulatedDeficit
 | 
        
31,797us-gaap_RetainedEarningsAccumulatedDeficit
 | 
         
 | 
         
 | 
      
      
        | Treasury shares, at cost, 19,059 shares | 
        
(560)us-gaap_TreasuryStockValue
 | 
        
(551)us-gaap_TreasuryStockValue
 | 
         
 | 
         
 | 
      
      
        | Accumulated other comprehensive income, net of tax | 
        
93us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
 | 
        
95us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax
 | 
         
 | 
         
 | 
      
      
        | Total Era Group Inc. stockholders’ equity | 
        
461,745us-gaap_StockholdersEquity
 | 
        
460,654us-gaap_StockholdersEquity
 | 
         
 | 
         
 | 
      
      
        | Noncontrolling interest in subsidiary | 
        
(487)us-gaap_MinorityInterest
 | 
        
(290)us-gaap_MinorityInterest
 | 
         
 | 
         
 | 
      
      
        | Total equity | 
        
461,258us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
 | 
        
460,364us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
 | 
         
 | 
         
 | 
      
      
        | Total liabilities and stockholders’ equity | 
        
1,013,498us-gaap_LiabilitiesAndStockholdersEquity
 | 
        
1,017,174us-gaap_LiabilitiesAndStockholdersEquity
 | 
         
 | 
         
 | 
      
      
        | Eliminations [Member] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current assets: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Cash and cash equivalents | 
        
0us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_CashAndCashEquivalentsAtCarryingValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
      
      
        | Trade, net of allowance for doubtful accounts of $1,926 and $1,955 in 2015 and 2014, respectively | 
        
0us-gaap_ReceivablesNetCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_ReceivablesNetCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Other, net of allowance for doubtful accounts of $437 in each of 2015 and 2014 | 
        
0us-gaap_AccountsAndOtherReceivablesNetCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_AccountsAndOtherReceivablesNetCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Inventories, net | 
        
0us-gaap_InventoryNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_InventoryNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
(5,819)us-gaap_DeferredTaxAssetsNetCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(2,087)us-gaap_DeferredTaxAssetsNetCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Prepaid expenses and other | 
        
0us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_PrepaidExpenseAndOtherAssetsCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Escrow deposits | 
        
0us-gaap_EscrowDeposit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_EscrowDeposit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total current assets | 
        
(5,819)us-gaap_AssetsCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(2,087)us-gaap_AssetsCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Property, Plant and Equipment [Abstract] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Property and equipment | 
        
0us-gaap_PropertyPlantAndEquipmentGross / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_PropertyPlantAndEquipmentGross / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated depreciation | 
        
0us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Net property and equipment | 
        
0us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_PropertyPlantAndEquipmentNet / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Equity investments and advances | 
        
0era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Investments in consolidated subsidiaries | 
        
(184,685)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(182,294)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Goodwill | 
        
0us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_Goodwill / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Receivables | 
        
(640,888)era_IntercompanyReceivables / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(630,585)era_IntercompanyReceivables / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Other assets | 
        
0us-gaap_OtherAssetsNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_OtherAssetsNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total assets | 
        
(831,392)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(814,966)us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Current liabilities: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Accounts payable and accrued expenses | 
        
0us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Accrued wages and benefits | 
        
0us-gaap_EmployeeRelatedLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_EmployeeRelatedLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Accrued interest | 
        
0us-gaap_InterestPayableCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_InterestPayableCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Current portion of long-term debt | 
        
0us-gaap_LongTermDebtCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_LongTermDebtCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Derivative instruments | 
        
0us-gaap_DerivativeLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_DerivativeLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Accrued income taxes | 
        
0us-gaap_AccruedIncomeTaxesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_AccruedIncomeTaxesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Other current liabilities | 
        
0us-gaap_OtherLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_OtherLiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total current liabilities | 
        
0us-gaap_LiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_LiabilitiesCurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Long-term debt | 
        
0us-gaap_LongTermDebtNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_LongTermDebtNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
(5,819)us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(2,087)us-gaap_DeferredTaxLiabilitiesNoncurrent / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Payables | 
        
(640,888)era_IntercompanyPayables / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(630,585)era_IntercompanyPayables / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Other liabilities | 
        
0era_DeferredGainsAndOtherLiabilities / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0era_DeferredGainsAndOtherLiabilities / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities | 
        
(646,707)us-gaap_Liabilities / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(632,672)us-gaap_Liabilities / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Era Group Inc. stockholders’ equity: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Common stock, $0.01 par value, 60,000,000 shares authorized; 20,582,841 outstanding, exclusive of treasury shares | 
        
0us-gaap_CommonStockValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_CommonStockValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Additional paid-in capital | 
        
(100,341)us-gaap_AdditionalPaidInCapital / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(100,341)us-gaap_AdditionalPaidInCapital / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Retained earnings | 
        
(84,344)us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(81,953)us-gaap_RetainedEarningsAccumulatedDeficit / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Treasury shares, at cost, 19,059 shares | 
        
0us-gaap_TreasuryStockValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_TreasuryStockValue / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated other comprehensive income, net of tax | 
        
0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total Era Group Inc. stockholders’ equity | 
        
(184,685)us-gaap_StockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(182,294)us-gaap_StockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Noncontrolling interest in subsidiary | 
        
0us-gaap_MinorityInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
0us-gaap_MinorityInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total equity | 
        
(184,685)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(182,294)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities and stockholders’ equity | 
        
(831,392)us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
        
(814,966)us-gaap_LiabilitiesAndStockholdersEquity / us-gaap_ConsolidationItemsAxis = us-gaap_ConsolidationEliminationsMember
 | 
         
 | 
         
 | 
      
      
        | Parent [Member] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current assets: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Cash and cash equivalents | 
        
14,964us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
16,481us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
18,918us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
24,635us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
      
      
        | Trade, net of allowance for doubtful accounts of $1,926 and $1,955 in 2015 and 2014, respectively | 
        
39us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
39us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Other, net of allowance for doubtful accounts of $437 in each of 2015 and 2014 | 
        
66us-gaap_AccountsAndOtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
65us-gaap_AccountsAndOtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Inventories, net | 
        
0us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
7,986us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
4,083us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Prepaid expenses and other | 
        
739us-gaap_PrepaidExpenseAndOtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
424us-gaap_PrepaidExpenseAndOtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Escrow deposits | 
        
0us-gaap_EscrowDeposit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_EscrowDeposit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total current assets | 
        
23,794us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
21,092us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Property, Plant and Equipment [Abstract] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Property and equipment | 
        
0us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated depreciation | 
        
0us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Net property and equipment | 
        
0us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Equity investments and advances | 
        
0era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Investments in consolidated subsidiaries | 
        
184,685us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
182,294us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Goodwill | 
        
0us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Receivables | 
        
627,077era_IntercompanyReceivables / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
616,932era_IntercompanyReceivables / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Other assets | 
        
6,445us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
6,914us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total assets | 
        
842,001us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
827,232us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Current liabilities: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Accounts payable and accrued expenses | 
        
144us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
299us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Accrued wages and benefits | 
        
0us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Accrued interest | 
        
4,772us-gaap_InterestPayableCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
930us-gaap_InterestPayableCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Current portion of long-term debt | 
        
0us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Derivative instruments | 
        
0us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
784us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Accrued income taxes | 
        
0us-gaap_AccruedIncomeTaxesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_AccruedIncomeTaxesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Other current liabilities | 
        
610us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
556us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total current liabilities | 
        
5,526us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
2,569us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Long-term debt | 
        
277,424us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
282,118us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
0us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Payables | 
        
97,399era_IntercompanyPayables / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
81,986era_IntercompanyPayables / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Other liabilities | 
        
0era_DeferredGainsAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0era_DeferredGainsAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities | 
        
380,349us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
366,673us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Era Group Inc. stockholders’ equity: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Common stock, $0.01 par value, 60,000,000 shares authorized; 20,582,841 outstanding, exclusive of treasury shares | 
        
206us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
204us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Additional paid-in capital | 
        
430,251us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
429,109us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Retained earnings | 
        
31,755us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
31,797us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Treasury shares, at cost, 19,059 shares | 
        
(560)us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
(551)us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated other comprehensive income, net of tax | 
        
0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total Era Group Inc. stockholders’ equity | 
        
461,652us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
460,559us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Noncontrolling interest in subsidiary | 
        
0us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
0us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total equity | 
        
461,652us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
460,559us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities and stockholders’ equity | 
        
842,001us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
        
827,232us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
 | 
         
 | 
         
 | 
      
      
        | Guarantor [Member] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current assets: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Cash and cash equivalents | 
        
16,528us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
22,188us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
1,887us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
5,403us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
      
      
        | Trade, net of allowance for doubtful accounts of $1,926 and $1,955 in 2015 and 2014, respectively | 
        
38,910us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
33,351us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other, net of allowance for doubtful accounts of $437 in each of 2015 and 2014 | 
        
2,501us-gaap_AccountsAndOtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
1,997us-gaap_AccountsAndOtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Inventories, net | 
        
26,189us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
26,869us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
0us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
0us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Prepaid expenses and other | 
        
3,342us-gaap_PrepaidExpenseAndOtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
2,237us-gaap_PrepaidExpenseAndOtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Escrow deposits | 
        
2,800us-gaap_EscrowDeposit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
0us-gaap_EscrowDeposit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total current assets | 
        
90,270us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
86,642us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Property, Plant and Equipment [Abstract] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Property and equipment | 
        
1,161,611us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
1,161,330us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated depreciation | 
        
(313,122)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
(306,010)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Net property and equipment | 
        
848,489us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
855,320us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Equity investments and advances | 
        
31,397era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
31,753era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Investments in consolidated subsidiaries | 
        
0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Goodwill | 
        
352us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
352us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Receivables | 
        
12,420era_IntercompanyReceivables / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
12,258era_IntercompanyReceivables / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other assets | 
        
8,711us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
7,184us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total assets | 
        
991,639us-gaap_Assets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
993,509us-gaap_Assets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Current liabilities: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Accounts payable and accrued expenses | 
        
13,672us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
14,817us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accrued wages and benefits | 
        
6,822us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
7,521us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accrued interest | 
        
19us-gaap_InterestPayableCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
19us-gaap_InterestPayableCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Current portion of long-term debt | 
        
26,729us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
27,426us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Derivative instruments | 
        
275us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
325us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accrued income taxes | 
        
37us-gaap_AccruedIncomeTaxesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
267us-gaap_AccruedIncomeTaxesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other current liabilities | 
        
2,511us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
2,606us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total current liabilities | 
        
50,065us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
52,981us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Long-term debt | 
        
0us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
0us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
223,019us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
219,114us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Payables | 
        
531,069era_IntercompanyPayables / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
536,341era_IntercompanyPayables / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other liabilities | 
        
1,937era_DeferredGainsAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
2,111era_DeferredGainsAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities | 
        
806,090us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
810,547us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Era Group Inc. stockholders’ equity: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Common stock, $0.01 par value, 60,000,000 shares authorized; 20,582,841 outstanding, exclusive of treasury shares | 
        
0us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
0us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Additional paid-in capital | 
        
99,845us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
99,845us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Retained earnings | 
        
86,098us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
83,312us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Treasury shares, at cost, 19,059 shares | 
        
0us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
0us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated other comprehensive income, net of tax | 
        
93us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
95us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total Era Group Inc. stockholders’ equity | 
        
186,036us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
183,252us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Noncontrolling interest in subsidiary | 
        
(487)us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
(290)us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total equity | 
        
185,549us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
182,962us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities and stockholders’ equity | 
        
991,639us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
        
993,509us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Non-Guarantor [Member] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Current assets: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Cash and cash equivalents | 
        
2,199us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
2,198us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
1,485us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
1,297us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
      
      
        | Trade, net of allowance for doubtful accounts of $1,926 and $1,955 in 2015 and 2014, respectively | 
        
0us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other, net of allowance for doubtful accounts of $437 in each of 2015 and 2014 | 
        
0us-gaap_AccountsAndOtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_AccountsAndOtherReceivablesNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Inventories, net | 
        
0us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
0us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Prepaid expenses and other | 
        
0us-gaap_PrepaidExpenseAndOtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_PrepaidExpenseAndOtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Escrow deposits | 
        
0us-gaap_EscrowDeposit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_EscrowDeposit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total current assets | 
        
2,199us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
2,198us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Property, Plant and Equipment [Abstract] | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Property and equipment | 
        
9,937us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
9,937us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated depreciation | 
        
(2,277)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
(2,131)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Net property and equipment | 
        
7,660us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
7,806us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Equity investments and advances | 
        
0era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0era_InvestmentsAtEquityAndAdvancesToFiftyPercentOrLessOwnedCompanies / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Investments in consolidated subsidiaries | 
        
0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Goodwill | 
        
0us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Receivables | 
        
1,391era_IntercompanyReceivables / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
1,395era_IntercompanyReceivables / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other assets | 
        
0us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total assets | 
        
11,250us-gaap_Assets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
11,399us-gaap_Assets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Current liabilities: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Accounts payable and accrued expenses | 
        
88us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
4us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accrued wages and benefits | 
        
0us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_EmployeeRelatedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accrued interest | 
        
0us-gaap_InterestPayableCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_InterestPayableCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Current portion of long-term debt | 
        
0us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Derivative instruments | 
        
0us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_DerivativeLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accrued income taxes | 
        
0us-gaap_AccruedIncomeTaxesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_AccruedIncomeTaxesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other current liabilities | 
        
0us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_OtherLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total current liabilities | 
        
88us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
4us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Long-term debt | 
        
0us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Deferred income taxes | 
        
0us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Intercompany Payables | 
        
12,420era_IntercompanyPayables / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
12,258era_IntercompanyPayables / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Other liabilities | 
        
0era_DeferredGainsAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0era_DeferredGainsAndOtherLiabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities | 
        
12,508us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
12,262us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Era Group Inc. stockholders’ equity: | 
         
 | 
         
 | 
         
 | 
         
 | 
      
      
        | Common stock, $0.01 par value, 60,000,000 shares authorized; 20,582,841 outstanding, exclusive of treasury shares | 
        
0us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_CommonStockValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Additional paid-in capital | 
        
496us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
496us-gaap_AdditionalPaidInCapital / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Retained earnings | 
        
(1,754)us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
(1,359)us-gaap_RetainedEarningsAccumulatedDeficit / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Treasury shares, at cost, 19,059 shares | 
        
0us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_TreasuryStockValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Accumulated other comprehensive income, net of tax | 
        
0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total Era Group Inc. stockholders’ equity | 
        
(1,258)us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
(863)us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Noncontrolling interest in subsidiary | 
        
0us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
0us-gaap_MinorityInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total equity | 
        
(1,258)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
(863)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 | 
      
      
        | Total liabilities and stockholders’ equity | 
        
$ 11,250us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
        
$ 11,399us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
 | 
         
 | 
         
 |