v3.19.3
Fair Value Fair Value (Narrative) (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
bbl
Mar. 31, 2019
USD ($)
Sep. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
bbl
Sep. 30, 2018
USD ($)
Derivative [Line Items]          
Gain (Loss) on Disposition of Other Assets $ 2,532   $ 353,797 $ 28,966 $ 353,797
Energy Related Derivative [Member]          
Derivative [Line Items]          
Derivative, Nonmonetary Notional Amount | bbl 30,000     30,000  
BridgeTex [Member]          
Derivative [Line Items]          
Guarantees, Fair Value Disclosure   $ 5,000      
Gain (Loss) on Disposition of Other Assets   $ 11,000