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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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Interest-rate contract $ 452 $ 505 $ 911 $ 1,045
Gain on sale of investments     0 4,728
Tax effect from changes in tax rates 1 0 3 0
Total $ 453 $ 505 $ 914 $ 5,773