Accumulated Other Comprehensive (Loss) Income (Schedule Of Amounts Reclassified Out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains (losses) reclassified into earnings	$ (730)	$ 0	$ 43	$ 0
Related income tax expense	(7,957)	(7,421)	(22,100)	(18,438)
Net income available to common shareholders	29,839	27,374	86,913	71,408
Securities available-for-sale: | Amounts reclassified from Other Comprehensive (Loss) Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net securities gains (losses) reclassified into earnings	(730)	0	43	0
Related income tax expense	175	0	(10)	0
Net income available to common shareholders	$ (555)	$ 0	$ 33	$ 0