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Asset retirement obligations - Summary of Asset Retirement Obligations (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of asset retirement obligations [line items] |  |
Beginning Balance | $ 99,684 | $ 89,778
Acquired during the year |  | 9,453
Accretion during the year | 2,038 | 2,006
Revisions to estimate | (2,043) | 1,544
Settlements | (5,536) | (3,097)
Ending Balance | 94,143 | 99,684
Less: Current portion | (824) | (3,489)
Long term portion | 93,319 | 96,195
Estimated undiscounted amount | 135,173 | 139,591
Turkey [member] |  |
Disclosure of asset retirement obligations [line items] |  |
Beginning Balance | 37,321 | 36,196
Acquired during the year |  | 0
Accretion during the year | 896 | 913
Revisions to estimate | (1,117) | 502
Settlements | (621) | (290)
Ending Balance | 36,479 | 37,321
Less: Current portion | 0 | 0
Long term portion | 36,479 | 37,321
Estimated undiscounted amount | 48,454 | 49,257
Canada [member] |  |
Disclosure of asset retirement obligations [line items] |  |
Beginning Balance | 9,453 | 0
Acquired during the year |  | 9,453
Accretion during the year | 0 | 0
Revisions to estimate | 2,762 | 0
Settlements | 0 | 0
Ending Balance | 12,215 | 9,453
Less: Current portion | 0 | 0
Long term portion | 12,215 | 9,453
Estimated undiscounted amount | 14,989 | 12,286
Greece [member] |  |
Disclosure of asset retirement obligations [line items] |  |
Beginning Balance | 47,461 | 48,131
Acquired during the year |  | 0
Accretion during the year | 1,035 | 1,025
Revisions to estimate | (3,512) | 1,112
Settlements | (4,915) | (2,807)
Ending Balance | 40,069 | 47,461
Less: Current portion | (824) | (3,489)
Long term portion | 39,245 | 43,972
Estimated undiscounted amount | 65,274 | 71,591
Romania [member] |  |
Disclosure of asset retirement obligations [line items] |  |
Beginning Balance | 1,405 | 1,359
Acquired during the year |  | 0
Accretion during the year | 36 | 36
Revisions to estimate | (77) | 10
Settlements | 0 | 0
Ending Balance | 1,364 | 1,405
Less: Current portion | 0 | 0
Long term portion | 1,364 | 1,405
Estimated undiscounted amount | 2,335 | 2,340
Brazil [member] |  |
Disclosure of asset retirement obligations [line items] |  |
Beginning Balance | 4,044 | 4,092
Acquired during the year |  | 0
Accretion during the year | 71 | 32
Revisions to estimate | (99) | (80)
Settlements | 0 | 0
Ending Balance | 4,016 | 4,044
Less: Current portion | 0 | 0
Long term portion | 4,016 | 4,044
Estimated undiscounted amount | $ 4,121 | $ 4,117

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- Definition Asset Retirement Obligations + References No definition available. + Details
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Namespace Prefix: | ego_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Asset retirement obligations, accretion expense during the year. + References No definition available. + Details
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- Definition Asset Retirement Obligations Acquired During The Year + References No definition available. + Details
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- Definition Asset retirement obligations current. + References No definition available. + Details
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Balance Type: | credit
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- Definition Asset retirement obligations non-current. + References No definition available. + Details
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- Definition Disclosure of asset retirement obligations [Line Items] + References No definition available. + Details
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- Definition Estimated undiscounted amount of asset retirement obligations. + References No definition available. + Details
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- Definition Revisions to estimate of asset retirement obligations. + References No definition available. + Details
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Namespace Prefix: | ego_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Settlement of asset retirement obligations. + References No definition available. + Details
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- Details
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- Details
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- Details
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