Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Segment Information (Details Textual)

v3.23.2
Note 4 - Segment Information (Details Textual) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
May 16, 2022
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Glencore [Member] | Oil and Gas [Member]            
Concentration Risk, Percentage 100.00%     100.00%    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Exxon [Member] | Oil and Gas [Member]            
Concentration Risk, Percentage     100.00%   100.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Plains Midstream Canada [Member] | CANADA            
Concentration Risk, Percentage 50.90%     50.90%    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Altagas [Member] | CANADA            
Concentration Risk, Percentage 19.10%     19.10%    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | PetroGas Energy [Member] | CANADA            
Concentration Risk, Percentage 18.60%     18.60%    
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | EGPC [Member] | Oil and Gas [Member] | EGYPT            
Concentration Risk, Percentage 100.00%          
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Mercuria [Member] | Oil and Gas [Member] | EGYPT            
Concentration Risk, Percentage   100.00%        
Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity           $ 50