Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Segment Information (Details Textual)

v3.23.1
Note 4 - Segment Information (Details Textual)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
May 16, 2022
USD ($)
Number of Reportable Segments 2    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Glencore [Member] | Oil and Gas [Member]      
Concentration Risk, Percentage 100.00%    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Exxon [Member] | Oil and Gas [Member]      
Concentration Risk, Percentage   100.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer One [Member] | CANADA      
Concentration Risk, Percentage 59.00%    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Customer Two [Member] | CANADA      
Concentration Risk, Percentage 21.00%    
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