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Fair Value Measurements (Change In The Fair Values Of Financial Instruments Categorized As Level 3) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Balance, beginning of period $ 8,547 $ 1,219
Realized and unrealized gains (losses) recognized in earnings, net (6,576) (13,065)
Purchases 450 1,448
Settlements (4,138) (4,297)
Ending balance $ 11,435 $ 11,435