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NATURE OF OPERATIONS AND ACCOUNTING POLICIES ERA Savings Plan (Details) (USD $)
In Millions, unless otherwise specified |
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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| Defined Contribution Pension and Other Postretirement Plans [Line Items] | |||
| Percent of employer contribution | 3.00%era_DefinedContributionPlanPercentofEmployeesGrossPay | ||
| Employer matching contribution, percent of employees' gross pay | 3.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent | 6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent | |
| Employer matching contribution, percent | 100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch | 50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch | |
| Employer contribution | $ 3.6us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | $ 1.1us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount | |
| SEACOR [Member] | |||
| Defined Contribution Pension and Other Postretirement Plans [Line Items] | |||
| Employer contribution |
$ 1.0us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount / dei_LegalEntityAxis = us-gaap_AffiliatedEntityMember |
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Defined Contribution Plan, Percent of Employees' Gross Pay No definition available.
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| X | ||||||||||
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- Definition
Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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| X | ||||||||||
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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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| X | ||||||||||
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- Definition
Percentage employer matches of the employee's percentage contribution matched. No definition available.
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| X | ||||||||||
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- Details
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