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v3.23.2

Note 1 - Organization and Accounting Policies (Details Textual) $ in Thousands |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 12, 2023 USD ($) | Jan. 01, 2023 USD ($) | Jan. 19, 2022 USD ($) | Jul. 31, 2023 USD ($) | Mar. 31, 2023 USD ($) | Jun. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) $ / item | Jun. 30, 2023 USD ($) $ / bbl | Mar. 31, 2023 USD ($) $ / bbl | Dec. 31, 2022 USD ($) $ / bbl | Sep. 30, 2022 $ / bbl | Jun. 30, 2022 USD ($) $ / bbl | Mar. 31, 2022 USD ($) $ / bbl | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Oct. 13, 2022 USD ($)
Oil and Gas, Average Sale Price (in USD per Per Share) |  |  |  |  |  |  | 78 | 77.99 | 81.07 | 88.72 | 100.71 | 113.84 | 100.87 |  |  |  |  |
Restricted Cash |  |  |  |  |  | $ 100 | $ 100 | $ 100 |  |  |  |  |  | $ 100 |  |  |  |
Payments for Abandonment Funding |  |  |  |  |  |  |  |  | $ 15,600 |  |  |  |  |  |  |  | $ 0 |
Abandonment Funding Payment Due |  |  |  |  |  |  |  |  |  | $ 5,800 |  |  |  |  |  |  |  |
Reestablishment of Currency Denominated Account | $ 37,300 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Abandonment Funding Payment Approved |  |  |  |  | $ 26,600 |  |  |  | 26,600 |  |  |  |  |  |  |  |  |
Abandonment Funding Payment Approved, Attributable to Company |  |  |  |  | 15,600 |  |  |  | 15,600 |  |  |  |  |  |  |  |  |
Payment Received for Abandonment |  |  |  |  | 15,600 |  |  |  |  |  |  |  |  |  |  |  |  |
Value Added Tax Receivable |  |  |  |  |  | 15,800 | 15,800 | 15,800 |  | 13,900 |  |  |  | 15,800 |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  |  |  |  |  | 680 |  |  |  |  |  | $ 571 |  | 1,615 | $ 1,063 |  |  |
Provision for Doubtful Accounts Transferred |  |  |  |  |  | 200 |  |  | 300 |  |  |  |  |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss |  |  |  |  | 12,832 | 13,519 | 13,519 | 13,519 | 12,832 | 8,704 |  | $ 6,389 | $ 6,135 | 13,519 | $ 6,389 | $ 5,741 |  |
Prepayments for Fixed Assets |  |  |  |  |  | 2,500 | 2,500 | 2,500 |  |  |  |  |  | 2,500 |  |  |  |
Prepaid Insurance |  |  |  |  |  | 1,500 | 1,500 | 1,500 |  |  |  |  |  | 1,500 |  |  |  |
Other Prepaid Expense, Current |  |  |  |  |  | $ 5,100 | $ 5,100 | $ 5,100 |  |  |  |  |  | $ 5,100 |  |  |  |
Office Equipment [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 5 years | 5 years | 5 years |  |  |  |  |  | 5 years |  |  |  |
Leasehold Improvements [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 7 years | 7 years | 7 years |  |  |  |  |  | 7 years |  |  |  |
Leasehold Improvements [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 5 years | 5 years | 5 years |  |  |  |  |  | 5 years |  |  |  |
GABON |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepaid Royalties |  |  |  |  |  | $ 2,700 | $ 2,700 | $ 2,700 |  |  |  |  |  | $ 2,700 |  |  |  |
EGYPT |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepaid Fuel |  |  |  |  |  | 4,000 | 4,000 | 4,000 |  |  |  |  |  | 4,000 |  |  |  |
Advances to Contractors |  |  |  |  |  | 1,900 | 1,900 | 1,900 |  |  |  |  |  | 1,900 |  |  |  |
Prepaid Payroll |  |  |  |  |  | 400 | 400 | 400 |  |  |  |  |  | 400 |  |  |  |
Tax Administration of Gabon [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for Value Added Tax |  |  |  |  |  | 500 |  |  |  |  |  |  |  | 1,100 |  |  |  |
Block P Offshore Equatorial Guinea [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss |  |  |  |  |  | 500 | $ 500 | $ 500 |  |  |  |  |  | $ 500 |  |  |  |
Oil Delivery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  |  |  |  |  | $ 0 |  |  | 400 |  |  |  |  |  |  |  |  |
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Receivables |  | $ 18,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  | 3,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss |  | $ 3,100 |  |  | $ (0) |  |  |  | $ (0) | $ 3,120 |  |  | $ (0) |  |  | $ (0) |  |
Communaute Financiere Africaine BEAC, Francs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Rate, Translation |  |  |  |  |  | 602.552 | 602.552 | 602.552 |  | 612.6 |  |  |  | 602.552 |  |  |  |
Canada, Dollars |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign Currency Exchange Rate, Translation |  |  |  |  |  | 0.755 | 0.755 | 0.755 |  | 0.738 |  |  |  | 0.755 |  |  |  |
Vaalco Energy Inc. and Other Etame Marin Block Owners [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value Added Tax Receivable |  |  |  |  |  | $ 24,300 | $ 24,300 | $ 24,300 |  | $ 21,800 |  |  |  | $ 24,300 |  |  |  |
TransGlobe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds From Other Receivables |  |  |  |  |  |  |  |  |  | $ 17,200 |  |  |  |  |  |  |  |
Merged Concession Agreement, Development Term (Year) |  |  | 15 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Merged Concession Agreement, Extension Term (Year) |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other Receivables |  |  | $ 67,500 |  |  | 50,300 | 50,300 | 50,300 |  |  |  |  |  | 50,300 |  |  |  | $ 67,500
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Payable, Other, Current |  |  |  |  |  | 19,700 | 19,700 | 19,700 |  |  |  |  |  | 19,700 |  |  |  |
Production Sharing Contract, September 17, 2018 Through September 16, 2028 [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds From Other Receivables |  |  |  | $ 1,900 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other, Net [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, after Allowance for Credit Loss |  |  |  |  |  | $ 19,700 | $ 19,700 | $ 19,700 |  |  |  |  |  | $ 19,700 |  |  |  |
Purchase Commitment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Contracts Entered Into |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |

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