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RELATED PARTY TRANSACTIONS Narrative (Details) (USD $)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Related Party Transaction [Line Items] | |||
| Employer matching contribution, percent | 100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch | 50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch | |
| Employer matching contribution, percent of employees' gross pay | 3.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent | 6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent | |
| SEACOR [Member] | |||
| Related Party Transaction [Line Items] | |||
| Revenue from related parties |
$ 100,000us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
$ 100,000us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
$ 100,000us-gaap_RevenueFromRelatedParties / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
| Employer matching contribution, percent |
50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
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| Employer matching contribution, percent of employees' gross pay |
6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
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| Expenses from transactions with related party |
3,048,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
3,367,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
11,096,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
| SEACOR [Member] | SEACOR Management Fees [Member] | SEACOR Management Fees [Member] | |||
| Related Party Transaction [Line Items] | |||
| Expenses from transactions with related party |
2,000,000us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty / us-gaap_IncomeStatementLocationAxis = era_SEACORManagementFeesMember / us-gaap_RelatedPartyTransactionAxis = era_SEACORManagementFeesMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_AffiliatedEntityMember |
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| Diamond Offshore Drilling, Inc. [Member] | Board of Directors Chairman [Member] | |||
| Related Party Transaction [Line Items] | |||
| Revenue from related parties |
$ 300,000us-gaap_RevenueFromRelatedParties / us-gaap_CounterpartyNameAxis = era_DiamondOffshoreDrillingInc.Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_BoardOfDirectorsChairmanMember |
$ 100,000us-gaap_RevenueFromRelatedParties / us-gaap_CounterpartyNameAxis = era_DiamondOffshoreDrillingInc.Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_BoardOfDirectorsChairmanMember |
$ 100,000us-gaap_RevenueFromRelatedParties / us-gaap_CounterpartyNameAxis = era_DiamondOffshoreDrillingInc.Member / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_BoardOfDirectorsChairmanMember |
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- Definition
Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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- Definition
Percentage employer matches of the employee's percentage contribution matched. No definition available.
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- Definition
Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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