Quarterly report pursuant to Section 13 or 15(d)

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

v3.21.1
Segment Information (Long-lived Assets From Continuing Operations) (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]    
Total assets $ 177,137 $ 141,232
Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 78,192 37,036
Total assets 177,137 141,232
Operating Segments [Member] | Gabon Segment [Member] | Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 68,016 26,832
Total assets 154,130 101,399
Operating Segments [Member] | Equatorial Guinea Segment [Member] | Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 10,000 10,000
Total assets 10,426 10,267
Corporate and Other [Member] | Continuing Operations [Member]    
Segment Reporting Information [Line Items]    
Long lived assets 176 204
Total assets $ 12,581 $ 29,566