XML 83 R71.htm IDEA: XBRL DOCUMENT v3.21.2
Fair Value, Level 3 Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Derivative assets        
Beginning balance $ 1,439 $ 2,069 $ 1,967 $ 1,066
Settlements (23,045) (33,936) (58,074) (54,867)
Realized gains recorded in earnings 21,606 31,867 56,107 53,801
Unrealized gains recorded in earnings 124 549 124 549
Ending balance $ 124 $ 549 $ 124 $ 549