Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Acquisitions and Dispositions (Details Textual)

v3.23.2
Note 3 - Acquisitions and Dispositions (Details Textual)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Oct. 13, 2022
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
Mar. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
$ / shares
Dec. 31, 2022
$ / shares
Nov. 30, 2006
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.10 $ 0.10   $ 0.10 $ 0.10  
Block 5 PSA [Member]            
Equity Method Investment, Ownership Percentage           40.00%
Equity Method Investment, Additional Working Interest Percentage           10.00%
Excluded From ProForma [Member] | TransGlobe [Member]            
Asset Impairment Charges     $ 26.0      
VAALCO Energy [Member] | VAALCO Stockholders [Member]            
Estimated Ownership to Be Received, Percent 54.50%          
VAALCO Energy [Member] | TransGlobe Shareholders [Member]            
Estimated Ownership to Be Received, Percent 45.50%          
TransGlobe [Member]            
Business Acquisition, Exchange Ratio 0.6727          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares 49.3          
Business Combination, Bargain Purchase, Increase (Decrease) of Gain Recognized, Amount       $ 1.4    
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual   $ 31.3   75.0    
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual   8.0   1.7    
Business Combination, Bargain Purchase, Gain Recognized, Amount $ 10.8   $ 9.4      
TransGlobe [Member] | Foreign Tax Authority [Member] | Egyptian Tax Authority [Member]            
Business Combination, Deferred Tax Liability Assumed   $ 1.4   $ 1.4