Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Segment Information (Details Textual)

v3.22.2
Note 4 - Segment Information (Details Textual)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
May 16, 2022
USD ($)
Number of Reportable Segments     2    
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Exxon [Member] | Oil and Gas [Member]          
Concentration Risk, Percentage 100.00% 100.00% 100.00% 100.00%  
Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity         $ 50