XML 120 R62.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 8 - Income Taxes - Tax Years Subject to Examination (Details) | 12 Months Ended
--- | ---
Dec. 31, 2022
Domestic Tax Authority [Member] | UNITED STATES | Minimum [Member] |
Jurisdiction | 2014
Domestic Tax Authority [Member] | UNITED STATES | Maximum [Member] |
Jurisdiction | 2022
Foreign Tax Authority [Member] | GABON | Minimum [Member] |
Jurisdiction | 2018
Foreign Tax Authority [Member] | GABON | Maximum [Member] |
Jurisdiction | 2022
Foreign Tax Authority [Member] | EGYPT | Minimum [Member] |
Jurisdiction | 2017
Foreign Tax Authority [Member] | EGYPT | Maximum [Member] |
Jurisdiction | 2022
Foreign Tax Authority [Member] | CANADA | Minimum [Member] |
Jurisdiction | 2018
Foreign Tax Authority [Member] | CANADA | Maximum [Member] |
Jurisdiction | 2022

X
- Definition Tax year being audited in the income tax examination, in YYYY format. + References No definition available. + Details
Name: | us-gaap_IncomeTaxExaminationYearUnderExamination
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:gYearListItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_GA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_EG
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=country_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |