XML 105 R82.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

SUPPLEMENTAL INFORMATION FOR STATEMENTS OF CASH FLOWS Schedule of Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract] |  |  |
Income taxes paid, net of refunds | $ 1,255 | $ 283 | $ 426
Interest paid to others, excluding capitalized interest | 12,693 | 13,581 | 15,315
Proceeds from Interest Received | (3,374) | (1,099) | (760)
Schedule of non-cash investing and financing activities: |  |  |
Settlement of accrued contingent liabilities through installment obligations | $ 0 | $ 0 | $ 386

X
- Definition Interest Paid to Others, Net + References No definition available. + Details
Name: | era_InterestPaidtoOthersNet
Namespace Prefix: | era_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Settlement of Accrued Contingent Liabilities Through Installment Obligations + References No definition available. + Details
Name: | era_SettlementofAccruedContingentLiabilitiesThroughInstallmentObligations
Namespace Prefix: | era_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 + Details
Name: | us-gaap_IncomeTaxesPaidNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_NoncashInvestingAndFinancingItemsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest received on loans and other debt instruments during the current period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 16 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3337-108585 + Details
Name: | us-gaap_ProceedsFromInterestReceived
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowElementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration