Comprehensive Income (Components Of OCI And Related Tax Effects) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Change in net unrealized holding gains or losses on available-for-sale securities:
Change arising during the period	$ (31,021)			$ (3,225)			$ (96,238)	$ (6,739)
Reclassification adjustment for gains included in net income								(606)
Change in net unrealized holding losses on available-for-sale securities	(31,021)			(3,225)			(96,238)	(7,345)
Tax effect	(9,556)			(993)			(29,646)	(2,151)
Total	(21,465)			(2,232)			(66,592)	(5,194)
Change in unrealized loss on derivative instruments:
Amount of gain (loss) during the period				(1)			1,324	266
Reclassification adjustment for net interest expense included in net income				316			426	2,549
Change in unrealized loss on derivative instruments				315			1,750	2,815
Tax effect				97			538	823
Total				218			1,212	1,992
Other comprehensive loss	$ (21,465)	$ (16,231)	$ (27,684)	$ (2,014)	$ 3,207	$ (4,395)	$ (65,380)	$ (3,202)