Quarterly report pursuant to Section 13 or 15(d)

Dispositions (Assets and Liabilities Attributable to Discontinued Operations) (Details)

v3.20.2
Dispositions (Assets and Liabilities Attributable to Discontinued Operations) (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Total current liabilities $ 48 $ 350
Joint Operating With Republic Of Angola [Member] | Discontinued Operations [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Accounts payable   8
Accrued liabilities and other 48 342
Total current liabilities 48 350
Total liabilities $ 48 $ 350