Accumulated Other Comprehensive (Loss) Income (Schedule Of Amounts Reclassified Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains reclassified into earnings	$ 0	$ 0	$ 773	$ 0
Related income tax expense	(7,884)	(5,767)	(14,143)	(11,018)
Net income available to common shareholders	32,733	22,683	57,074	44,025
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	0	0	773	0
Related income tax expense	0	0	(185)	0
Net income available to common shareholders	$ 0	$ 0	$ 588	$ 0