SECURITIES (Summary Of Available Sale Of Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Information related to available for sale securities [Abstract]
Amortized Cost	$ 590,688	$ 591,621
Gross Unrealized Gain	8,003	2,795
Gross Unrealized Losses	(3,138)	(8,867)
Fair Value	595,553	585,549
US Treasury Securities [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	994	994
Gross Unrealized Gain	0	0
Gross Unrealized Losses	0	(7)
Fair Value	994	987
US Government Sponsored Agencies [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	4,066	4,435
Gross Unrealized Gain	0	0
Gross Unrealized Losses	(77)	(85)
Fair Value	3,989	4,350
State and Municipal Securities [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	226,924	217,964
Gross Unrealized Gain	5,624	1,403
Gross Unrealized Losses	(286)	(2,708)
Fair Value	232,262	216,659
Mortgage-backed securities residential [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	320,460	329,516
Gross Unrealized Gain	2,378	1,392
Gross Unrealized Losses	(2,559)	(5,496)
Fair Value	320,279	325,412
Mortgage-backed securities commercial [Member]
Information related to available for sale securities [Abstract]
Amortized Cost	38,244	38,712
Gross Unrealized Gain	1	0
Gross Unrealized Losses	(216)	(571)
Fair Value	$ 38,029	$ 38,141