Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Classification of Outstanding Financial Instruments (Details)

v3.20.2
DERIVATIVE INSTRUMENTS AND PRICE RISK MANAGEMENT - Classification of Outstanding Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Offsetting Assets [Line Items]    
Current Derivative Assets $ 119,468 $ 5,628
Noncurrent Derivative Assets 6,826 8,554
Total derivative assets 126,294 36,233
Current liabilities (5,438) (11,298)
Noncurrent liabilities (2,456) (8,079)
Total derivative liabilities (7,894) (41,428)
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets 139,333 36,233
Gross Amounts Offset in the Balance Sheet, Offsetting of Derivative Assets (13,039) (22,051)
Net Amounts of Assets Presented in the Balance Sheet, Offsetting of Derivative Assets 126,294 14,182
Gross Amounts of Recognized Assets, Offsetting of Derivative Liabilities (20,933) (41,428)
Gross Amounts Offset in the Balance Sheet, Offsetting of Derivative Liabilities 13,039 22,051
Net Amounts of Assets Presented in the Balance Sheet, Offsetting of Derivative Liabilities 7,894 19,377
Current Assets    
Offsetting Assets [Line Items]    
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets 122,167 20,164
Gross Amounts Offset in the Balance Sheet, Offsetting of Derivative Assets (2,699) (14,536)
Net Amounts of Assets Presented in the Balance Sheet, Offsetting of Derivative Assets 119,468 5,628
Noncurrent Assets    
Offsetting Assets [Line Items]    
Gross Amounts of Recognized Assets, Offsetting of Derivative Assets 17,166 16,069
Gross Amounts Offset in the Balance Sheet, Offsetting of Derivative Assets (10,340) (7,515)
Net Amounts of Assets Presented in the Balance Sheet, Offsetting of Derivative Assets 6,826 8,554
Current Liabilities    
Offsetting Assets [Line Items]    
Gross Amounts of Recognized Assets, Offsetting of Derivative Liabilities (5,438) (25,834)
Gross Amounts Offset in the Balance Sheet, Offsetting of Derivative Liabilities 0 14,536
Net Amounts of Assets Presented in the Balance Sheet, Offsetting of Derivative Liabilities 5,438 11,298
Noncurrent Liabilities    
Offsetting Assets [Line Items]    
Gross Amounts of Recognized Assets, Offsetting of Derivative Liabilities (15,495) (15,594)
Gross Amounts Offset in the Balance Sheet, Offsetting of Derivative Liabilities 13,039 7,515
Net Amounts of Assets Presented in the Balance Sheet, Offsetting of Derivative Liabilities 2,456 8,079
Commodity Price Swap Contracts | Current Assets    
Offsetting Assets [Line Items]    
Current Derivative Assets 119,468 20,164
Commodity Price Swap Contracts | Noncurrent Assets    
Offsetting Assets [Line Items]    
Noncurrent Derivative Assets 6,826 16,069
Commodity Price Swap Contracts | Current Liabilities    
Offsetting Assets [Line Items]    
Current liabilities (4,908) (25,834)
Commodity Price Swap Contracts | Noncurrent Liabilities    
Offsetting Assets [Line Items]    
Noncurrent liabilities (1,781) (5,273)
Interest Rate Swap Contracts | Current Assets    
Offsetting Assets [Line Items]    
Current Derivative Assets 0 0
Interest Rate Swap Contracts | Noncurrent Assets    
Offsetting Assets [Line Items]    
Noncurrent Derivative Assets 0 0
Interest Rate Swap Contracts | Current Liabilities    
Offsetting Assets [Line Items]    
Current liabilities (530) 0
Interest Rate Swap Contracts | Noncurrent Liabilities    
Offsetting Assets [Line Items]    
Noncurrent liabilities (675) 0
Commodity Price Swaptions Contracts | Noncurrent Liabilities    
Offsetting Assets [Line Items]    
Noncurrent liabilities $ 0 $ (10,321)