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v3.20.1

Derivatives (Gross Current and Noncurrent Assets and Liabilities) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2019
--- | --- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |
Commodity derivative assets | $ 20,977 | $ (10,323) | $ 38,580
Commodity derivative liabilities | 0 | 0 | 0
Commodity derivative assets - current | 149,070 | 107,863 | 158,277
Commodity derivative liabilities - current | (90,491) | (46,942) | (66,623)
Commodity |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Commodity derivative assets | 177,730 | 100,931 | 146,801
Commodity derivative liabilities | (141,410) | (95,571) | (76,962)
Cash collateral paid | 22,855 | 56,005 |
Cash collateral paid |  |  | 21,751
Total | 59,175 | 61,365 | 91,590
Commodity | Commodity Derivative Assets - Current |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Commodity derivative assets | 164,700 | 92,429 | 142,262
Commodity derivative liabilities | (38,485) | (40,571) | (5,736)
Cash collateral paid | 22,855 | 56,005 |
Cash collateral paid |  |  | 21,751
Commodity derivative assets - current | 149,070 | 107,863 | 158,277
Commodity | Commodity Derivative Assets - Noncurrent |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Commodity derivative assets | 3,240 | 1,045 | 3,781
Commodity derivative liabilities | (119) | (96) | (24)
Cash collateral paid | 0 | 0 |
Cash collateral paid |  |  | 0
Commodity derivative assets - noncurrent | 3,121 | 949 | 3,757
Commodity | Commodity Derivative Liabilities - Current |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Commodity derivative assets | 9,648 | 7,439 | 665
Commodity derivative liabilities | (100,139) | (54,381) | (67,288)
Cash collateral paid | 0 | 0 |
Cash collateral paid |  |  | 0
Commodity derivative liabilities - current | (90,491) | (46,942) | (66,623)
Commodity | Commodity Derivative Liabilities - Noncurrent |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Commodity derivative assets | 142 | 18 | 93
Commodity derivative liabilities | (2,667) | (523) | (3,914)
Cash collateral paid | 0 | 0 |
Cash collateral paid |  |  | 0
Commodity derivative liabilities - noncurrent | $ (2,525) | $ (505) | $ (3,821)

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