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Derivatives - Derivative Activity (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) institution | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) institution | Jun. 30, 2019 USD ($)
Derivative Instruments and Hedging Activities Disclosure |  |  |  |
(Gain) loss on derivative contracts | $ (2,241) | $ 0 | $ (12,467) | $ 209
Cash received on settlements |  |  | $ (10,577) | (5,078)
Number of counterparties to open derivative contracts | institution | 2 |  | 2 |
Commodity derivative contracts |  |  |  |
Derivative Instruments and Hedging Activities Disclosure |  |  |  |
(Gain) loss on derivative contracts | $ 2,241 | 0 | $ (12,467) | 209
Cash received on settlements | $ 6,490 | $ 0 | $ 10,577 | $ 5,078

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