Investment Securities (Securities With A Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	$ 323,238	$ 384,929
Less than 12 Months, Unrealized Loss	(27,141)	(8,324)
12 Months or More, Fair Value	207,037	32,129
12 Months or More, Unrealized Loss	(36,004)	(574)
Total, Fair Value	530,275	417,058
Total, Unrealized Loss	(63,145)	(8,898)
State And Municipals [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	173,244	18,429
Less than 12 Months, Unrealized Loss	(12,585)	(176)
12 Months or More, Fair Value	4,040
12 Months or More, Unrealized Loss	(1,764)
Total, Fair Value	177,284	18,429
Total, Unrealized Loss	(14,349)	(176)
Pass-Through Mortgage Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	47,404	179,575
Less than 12 Months, Unrealized Loss	(4,874)	(4,529)
12 Months or More, Fair Value	111,182	1,641
12 Months or More, Unrealized Loss	(20,310)	(62)
Total, Fair Value	158,586	181,216
Total, Unrealized Loss	(25,184)	(4,591)
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	21,050	99,305
Less than 12 Months, Unrealized Loss	(3,222)	(3,239)
12 Months or More, Fair Value	63,477
12 Months or More, Unrealized Loss	(11,268)
Total, Fair Value	84,527	99,305
Total, Unrealized Loss	(14,490)	(3,239)
Corporate Bonds [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months, Fair Value	81,540	87,620
Less than 12 Months, Unrealized Loss	(6,460)	(380)
12 Months or More, Fair Value	28,338	30,488
12 Months or More, Unrealized Loss	(2,662)	(512)
Total, Fair Value	109,878	118,108
Total, Unrealized Loss	$ (9,122)	$ (892)