Comprehensive Income (Components Of OCI And Related Tax Effects) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Change in net unrealized holding gains or losses on available-for-sale securities:
Change arising during the period		$ (41,556)	$ (7,261)
Reclassification adjustment for gains included in net income	[1]		(606)
Change in net unrealized holding losses on available-for-sale securities		(41,556)	(7,867)
Tax effect		(12,800)	(2,311)
Total		(28,756)	(5,556)
Change in unrealized loss on derivative instruments:
Amount of gain during the period		1,248	300
Reclassification adjustment for net interest expense included in net income	[2]	299	1,314
Change in unrealized loss on derivative instruments		1,547	1,614
Tax effect		475	453
Total		1,072	1,161
Other comprehensive loss		$ (27,684)	$ (4,395)

[1] Represents net realized gains arising from the sale of AFS securities. These net gains are included in the consolidated statements of income in the line item “Net gains on sales of securities.”

[2] Represents the net interest expense recorded on derivative transactions and included in the consolidated statements of income under “Interest expense.”