Quarterly report pursuant to Section 13 or 15(d)

Dispositions (Summarized Results Of Discontinued Operations) (Details)

v3.19.1
Dispositions (Summarized Results Of Discontinued Operations) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Income (loss) from discontinued operations $ 5,671 $ (52)
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 obligations (7,193)  
General and administrative expense 14 32
Total operating costs, expenses and (recovery) (7,179) 32
Operating income (loss) 7,179 (32)
Other, net   (20)
Total other income (expense)   (20)
Income (loss) from discontinued operations before income taxes 7,179 (52)
Income tax expense 1,508  
Income (loss) from discontinued operations $ 5,671 $ (52)