Securities (Summary Of Securities Available For Sale In Unrealized Loss Position) (Details) $ in Thousands	Jun. 30, 2022 USD ($) security	Dec. 31, 2021 USD ($) security
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	263	157
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 263,623	$ 169,460
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	32,565	2,926
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	47,302	39,837
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,439)	(837)
Debt Securities, Available-for-sale, Unrealized Loss Position	310,925	209,297
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 36,004	$ 3,763
US Government Corporations and Agencies Securities [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	29	41
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 5,927	$ 6,630
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	57	23
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	14,390	21,061
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(276)	(337)
Debt Securities, Available-for-sale, Unrealized Loss Position	20,317	27,691
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 333	$ 360
Government Sponsored Agencies [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	43	19
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 32,842	$ 19,828
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	2,506	376
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	6,961	6,886
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(230)	(212)
Debt Securities, Available-for-sale, Unrealized Loss Position	39,803	26,714
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 2,736	$ 588
Nongovernment Sponsored Agencies [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	19	6
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 28,540	$ 4,345
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,115	61
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	4,430	7,591
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(321)	(218)
Debt Securities, Available-for-sale, Unrealized Loss Position	32,970	11,936
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,436	$ 279
State and Political Subdivisions General Obligations [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	53	41
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 59,419	$ 62,543
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	13,831	1,286
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,416	1,055
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(358)	(37)
Debt Securities, Available-for-sale, Unrealized Loss Position	60,835	63,598
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 14,189	$ 1,323
State and Political Subdivisions Lease Revenues [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security		2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 1,564
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		14
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		494
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(12)
Debt Securities, Available-for-sale, Unrealized Loss Position		2,058
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		$ 26
State and Political Subdivisions Income Tax Revenues [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security		1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 721
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Debt Securities, Available-for-sale, Unrealized Loss Position		721
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		$ 3
State and Political Subdivisions Sales Tax Revenues
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	4	2
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 5,427	$ 6,052
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,473	99
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	5,427	6,052
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,473	$ 99
State and Political Subdivisions Various Tax Revenues
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	10	5
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 9,667	$ 8,389
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,528	203
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,405	0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(415)	0
Debt Securities, Available-for-sale, Unrealized Loss Position	11,072	8,389
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,943	$ 203
State and Political Subdivisions Utility Revenues
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security		3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		$ 5,175
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		130
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Debt Securities, Available-for-sale, Unrealized Loss Position		5,175
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		$ 130
State and Political Subdivisions Other Revenues [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	19	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 18,319	$ 744
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	3,316	9
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	18,319	744
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 3,316	$ 9
Corporate Debt Securities [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	21	10
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 12,487	$ 10,534
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	610	314
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	9,640	990
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(703)	(10)
Debt Securities, Available-for-sale, Unrealized Loss Position	22,127	11,524
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,313	$ 324
Asset-backed Securities [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	16	8
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 22,462	$ 10,522
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	373	86
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	2,516	751
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(252)	(1)
Debt Securities, Available-for-sale, Unrealized Loss Position	24,978	11,273
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 625	$ 87
Tax Exempt State and Political Subdivisions General Obligations [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	28	13
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 40,134	$ 25,555
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	4,183	261
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	6,411	853
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(861)	(9)
Debt Securities, Available-for-sale, Unrealized Loss Position	46,545	26,408
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 5,044	$ 270
Tax Exempt State and Political Subdivisions Water and Sewer Revenues [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	10	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 12,419	$ 904
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	940	15
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	12,419	904
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 940	$ 15
Tax Exempt State and Political Subdivisions Lease Revenues [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	1	1
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 2,026	$ 2,396
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	380	31
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	2,026	2,396
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 380	$ 31
Tax Exempt State and Political Subdivisions Various Tax Revenues
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 6,647
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,116
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	133
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(23)
Debt Securities, Available-for-sale, Unrealized Loss Position	6,780
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,139
Tax Exempt State and Political Subdivisions Other Revenues [Member]
Marketable Securities [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	6	3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 7,307	$ 3,558
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,137	15
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	156
Debt Securities Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(1)
Debt Securities, Available-for-sale, Unrealized Loss Position	7,307	3,714
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 1,137	$ 16