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Note 12 - Leases - Lease Cost on the Consolidated Statement of Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Total lease expense | $ 6,117 | $ 6,708 | $ 12,442 | $ 13,603
Lease costs capitalized | 4 | 414 | 35 | 905
Total lease costs | 6,121 | 7,122 | 12,477 | 14,508
Finance Lease Cost [Member] |  |  |  |
Total lease expense | 2,376 | 57 | 5,001 | 96
Production Expense [Member] |  |  |  |
Total lease expense | 1,208 | 3,720 | 2,494 | 7,558
General and Administrative Expense [Member] |  |  |  |
Total lease expense | 52 | 47 | 98 | 63
Lease Costs Billed to Joint Venture Owners [Member] |  |  |  |
Total lease expense | $ 2,481 | $ 2,884 | $ 4,849 | $ 5,886

X
- Definition Amount of lease costs capitalized, net. + References No definition available. + Details
Name: | egy_LeaseCostsCapitalizedNet
Namespace Prefix: | egy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of lease costs including capitalized costs. + References No definition available. + Details
Name: | egy_LeaseCostsIncludingCapitalizedCosts
Namespace Prefix: | egy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gross lease expense. + References No definition available. + Details
Name: | egy_LeaseExpenseGross
Namespace Prefix: | egy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=egy_FinanceLeaseCostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=egy_ProductionExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_GeneralAndAdministrativeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=egy_LeaseCostsBilledToJointVentureOwnersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |