XML 65 R33.htm IDEA: XBRL DOCUMENT v3.20.1
Derivative Financial Instruments - Schedule of Location and Fair Value Amounts of All Derivative Instruments (Details) - Derivatives Not Designated as Hedging Contracts - Commodity Contracts - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Derivative asset - current    
Derivative Asset [Abstract]    
Gross Recognized Assets $ 73,846 $ 13,321
Gross Amounts Offset, Assets (1,829) (4,461)
Total financial assets 72,017 8,860
Derivative liability - current    
Derivative Liability [Abstract]    
Gross Recognized Liabilities 1,829 11,350
Gross Amounts Offset, Liabilities (1,829) (4,461)
Total financial liabilities 0 6,889
Derivative asset - noncurrent    
Derivative Asset [Abstract]    
Gross Recognized Assets 20,769 1,031
Gross Amounts Offset, Assets 0 (261)
Total financial assets 20,769 770
Derivative liability - noncurrent    
Derivative Liability [Abstract]    
Gross Recognized Liabilities 0 261
Gross Amounts Offset, Liabilities 0 (261)
Total financial liabilities $ 0 $ 0