XML 71 R59.htm IDEA: XBRL DOCUMENT v3.10.0.1
Major classes of assets and liabilities Refining (Details 2) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Current assets:      
Total current assets held for sale $ 571 $ 479 $ 304
Refining | Discontinued operations, held-for-sale or disposed of by sale      
Current assets:      
Income taxes receivable 1,640 1,778 8,444
Total current assets held for sale 1,640 1,778 8,444
Total assets held for sale 1,640 1,778 8,444
Noncurrent liabilities:      
Deferred income taxes (b) 37 37 55
Total noncurrent liabilities held for sale 37 37 55
Total liabilities held for sale $ 37 $ 37 $ 55