Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Segment Activity) (Details)

v3.20.1
Segment Information (Segment Activity) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Segment Reporting Information [Line Items]    
Revenues-crude oil and natural gas sales $ 18,389 $ 19,765
Depreciation, depletion and amortization 3,103 1,553
Impairment of proved crude oil and natural gas properties 30,625  
Bad debt recovery and other 810 (29)
Operating income (loss) (26,683) 5,546
Derivative instruments gain (loss), net 7,339 (1,912)
Income tax expense 33,478 2,753
Additions to crude oil and natural gas properties and equipment - accrual 9,421 685
Operating Segments [Member] | Gabon Segment [Member]    
Segment Reporting Information [Line Items]    
Revenues-crude oil and natural gas sales 18,389 19,765
Depreciation, depletion and amortization 3,072 1,479
Impairment of proved crude oil and natural gas properties 30,625  
Bad debt recovery and other 810 (29)
Operating income (loss) (26,283) 9,530
Income tax expense 22,039 2,491
Additions to crude oil and natural gas properties and equipment - accrual 9,421 681
Operating Segments [Member] | Equatorial Guinea Segment [Member]    
Segment Reporting Information [Line Items]    
Operating income (loss) (125) (186)
Income tax expense   10
Additions to crude oil and natural gas properties and equipment - accrual   (187)
Corporate and Other [Member]    
Segment Reporting Information [Line Items]    
Depreciation, depletion and amortization 31 74
Operating income (loss) (275) (3,798)
Derivative instruments gain (loss), net 7,339 (1,912)
Income tax expense $ 11,439 252
Additions to crude oil and natural gas properties and equipment - accrual   $ 191