Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Long-lived Assets From Continuing Operations) (Details)

v3.21.2
Segment Information (Long-lived Assets From Continuing Operations) (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]    
Total assets $ 181,503 $ 141,232
Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 74,202 37,036
Total assets 181,503 141,232
Operating Segments [Member] | Gabon Segment [Member] | Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 64,049 26,832
Total assets 150,538 101,399
Operating Segments [Member] | Equatorial Guinea Segment [Member] | Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 10,000 10,000
Total assets 10,299 10,267
Corporate and Other [Member] | Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 153 204
Total assets $ 20,666 $ 29,566