Accumulated Other Comprehensive Income (Schedule Of Amounts Reclassified Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains reclassified into earnings	$ 773	$ 0
Related income tax expense	(6,259)	(5,251)
Net income available to common shareholders	24,341	21,342
Securities available-for-sale: | Amounts reclassified from Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains reclassified into earnings	773	0
Related income tax expense	(185)	0
Net income available to common shareholders	$ 588	$ 0