Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Commitments and Contingencies (Details Textual)

v3.23.1
Note 10 - Commitments and Contingencies (Details Textual)
3 Months Ended 12 Months Ended 36 Months Ended
May 09, 2023
$ / shares
Feb. 14, 2023
$ / shares
Nov. 01, 2022
USD ($)
Aug. 20, 2022
USD ($)
Feb. 01, 2022
USD ($)
Jan. 20, 2022
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2016
Dec. 31, 2021
Feb. 01, 2026
USD ($)
Feb. 01, 2025
USD ($)
Feb. 28, 2023
USD ($)
Oct. 13, 2022
USD ($)
Jan. 19, 2022
USD ($)
Nov. 30, 2021
USD ($)
Sep. 30, 2020
Estimated Abandonment Costs                                   $ 47,800,000  
Abandonment Funding             $ 6,268,000 $ 21,369,000 $ 20,586,000                    
Payments for Abandonment Funding             15,600,000     $ 0                  
Dividends Payable, Amount Per Share (in dollars per share) | $ / shares   $ 0.0625                                  
Stock Repurchase Program, Authorized Amount                             $ 24,003,172        
Increase (Decrease) in Other Receivables             2,309,000 $ 1,723,000                      
Dividends Payable, Date Declared   Feb. 14, 2023                                  
Dividends Payable, Date to be Paid   Mar. 31, 2023                                  
Parent Company [Member]                                      
Contractual Obligation, Total             26,300,000                        
Parent Company [Member] | Accrued Liabilities and Other [Member]                                      
Contractual Obligation, Total             9,400,000                        
Parent Company [Member] | Other Long-term Liabilities [Member]                                      
Contractual Obligation, Total             17,000,000.0                        
TransGlobe [Member]                                      
Other Receivables             50,300,000                 $ 67,500,000 $ 67,500,000    
Egyptian General Petroleum Corporation (EGPC) [Member]                                      
Contractual Obligation, Total             $ 150,000,000                        
Increase (Decrease) in Other Receivables                 $ (10,000,000.0)                    
Development Timeframe (Year)             5 years                        
Egyptian General Petroleum Corporation (EGPC) [Member] | Minimum [Member]                                      
Contractual Obligation, Total             $ 50,000,000.0                        
Sogara [Member]                                      
Other Receivables             20,300,000                        
Share Buyback Program [Member]                                      
Stock Repurchase Program, Authorized Amount     $ 30,000,000                                
Stock Repurchase Program, Period in Force (Month)     20 months                                
Subsequent Event [Member]                                      
Dividends Payable, Amount Per Share (in dollars per share) | $ / shares $ 0.0625                                    
Dividends Payable, Date Declared May 09, 2023                                    
Dividends Payable, Date to be Paid Jun. 23, 2023                                    
Foreign Tax Authority [Member] | Tax Administration of Gabon [Member]                                      
Income Tax Examination, Year under Examination                     2013 2014 2015 2016              
FPSO Charter [Member]                                      
Number of Charter Extension Periods                                     2
Charter Day Rates       $ 150,000                              
Other Demobilization Fees, Gross       15,300,000                              
Other Demobilization Fees, Net       $ 8,900,000                              
Etame Marine Block [Member]                                      
Abandonment Funding             6,300,000                        
Payments for Abandonment Funding             15,600,000                        
Etame Marine Block [Member]                                      
Estimated Abandonment Costs                                   $ 81,300,000  
Abandonment Funding             10,700,000                        
Payments for Abandonment Funding             $ 26,600,000                        
Egyptian General Petroleum Corporation (EGPC) [Member] | Merged Concession Agreement [Member]                                      
Payments for Merger Related Costs, First Modernization Payment           $ 15,000,000.0                          
Payments for Merger Related Costs, Signature Bonus           $ 1,000,000.0                          
Payments for Merger Related Costs, Second Modernization Payment         $ 10,000,000.0                            
Egyptian General Petroleum Corporation (EGPC) [Member] | Merged Concession Agreement [Member] | Forecast [Member]                                      
Contractual Obligation, Total                         $ 10,000,000.0 $ 10,000,000.0