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Fair Value Measurements (Change In The Fair Values Of Financial Instruments Categorized As Level 3) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Balance, beginning of period $ 1,219
Realized and unrealized gains (losses) recognized in earnings, net (6,490)
Purchases 998
Settlements (160)
Ending balance $ 8,547