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Fair Value Measurements (Schedule of Level 3 Fair Value Rollforward) (Details) - Level 2 [Member] - Recurring [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning balance $ 5,645 $ 5,704
Cash settlement (1,767) (1,656)
Losses included in earnings 238 1,597
Ending balance $ 4,116 $ 5,645