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Accumulated Other Comprehensive Income (Reclassifications Out of Other Comprehensive Income) (Details) - Reclassification out of Accumulated Other Comprehensive Income [Member] - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]    
Interest-rate contract $ 459 $ 110
Gain On Sale Of Investments 0 4,728
Tax effect from changes in tax rates 1 0
Total $ 460 $ 4,838