Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments - Change in fair value and settlement contract (Details)

v3.21.2
Derivative Financial Instruments - Change in fair value and settlement contract (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Derivative Financial Instruments        
Realized loss (gain) $ 15,357 $ (22,578) $ 23,602 $ (31,970)
Unrealized loss (gain) 66,083 37,992 82,418 (14,528)
Derivative loss (gain) $ 81,440 $ 15,414 $ 106,020 $ (46,498)