Quarterly report pursuant to Section 13 or 15(d)

Dispositions (Summarized Results of Discontinued Operations) (Details)

v3.19.2
Dispositions (Summarized Results of Discontinued Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Income (loss) from discontinued operations $ (162)   $ (343) $ 5,509 $ (395)
Discontinued Operations [Member] | Joint Operating With Republic Of Angola [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Gain on settlement of drilling obligation       (7,193)  
General and administrative expense 206   332 220 364
Total operating costs, expenses and (recovery) 206   332 (6,973) 364
Operating income (loss) (206)   (332) 6,973 (364)
Other, net     (11)   (31)
Total other income (expense)     (11)   (31)
Income (loss) from discontinued operations before income taxes (206)   (343) 6,973 (395)
Income tax expense (44)     1,464  
Income (loss) from discontinued operations $ (162) $ 5,700 $ (343) $ 5,509 $ (395)