Securities (Summary Of Amortized Cost, Unrealized Gains, Unrealized Losses And Estimated Fair Values) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	$ 398,643	$ 277,157
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	6,223	10,715
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3,763	1,745
Debt Securities, Available-for-sale	401,103	286,127
U.S. Government and agencies and corporations [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	36,820	35,190
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	169	361
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	360	394
Debt Securities, Available-for-sale	36,629	35,157
Government-sponsored agencies [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	61,646	57,399
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,153	1,996
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	588	349
Debt Securities, Available-for-sale	62,211	59,046
Nongovernment-sponsored entities [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	26,839	16,799
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	26	132
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	279	244
Debt Securities, Available-for-sale	26,586	16,687
State and Political Subdivisions General Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	78,627	15,065
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	377	804
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	1,323	4
Debt Securities, Available-for-sale	77,681	15,865
State and Policital Subdivisions Water and Sewer Revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	9,839	10,176
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	294	620
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	0
Debt Securities, Available-for-sale	10,133	10,796
State and Political Subdivisions Lease Revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	6,401	4,825
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	215	341
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	26	0
Debt Securities, Available-for-sale	6,590	5,166
State and Political Subdivisions University Revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost		3,022
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax		315
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax		0
Debt Securities, Available-for-sale		3,337
State and Political Subdivisions Income Tax Revenues [Domain]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	6,487	5,052
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	250	376
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3	0
Debt Securities, Available-for-sale	6,734	5,428
State and Political Subdivisions Sales Tax Revenues
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	6,909
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	19
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	99
Debt Securities, Available-for-sale	6,829
State and Political Subdivisions Various Tax Revenues
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	13,031
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	218
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	203
Debt Securities, Available-for-sale	13,046
State and Political Subdivisions Utility Revenues
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	7,153
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	137
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	130
Debt Securities, Available-for-sale	7,160
State and policital subdivisions, Other revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	9,291	9,406
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	331	907
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	9	0
Debt Securities, Available-for-sale	9,613	10,313
Corporate debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	30,524	26,483
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	78	56
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	324	112
Debt Securities, Available-for-sale	30,278	26,427
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	24,873	46,579
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	97	172
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	87	625
Debt Securities, Available-for-sale	24,883	46,126
Total taxable debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	318,440	229,996
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	3,364	6,080
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	3,431	1,728
Debt Securities, Available-for-sale	318,373	234,348
Tax Exempt State and Political Subdivisions General Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	47,583	22,213
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1,526	2,416
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	270	9
Debt Securities, Available-for-sale	48,839	24,620
Tax Exempt State and Political Subdivisions Water and Sewer Revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	10,618	8,266
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	375	709
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	15	0
Debt Securities, Available-for-sale	10,978	8,975
Tax Exempt State and Political Subdivisions Lease Revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	7,974	7,195
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	553	799
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	31	0
Debt Securities, Available-for-sale	8,496	7,994
Tax Exempt State and Political Subdivisions Other Revenues [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	14,028	9,487
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	405	711
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	16	8
Debt Securities, Available-for-sale	14,417	10,190
Total tax-exempt debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Total Amortized Cost	80,203	47,161
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	2,859	4,635
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	332	17
Debt Securities, Available-for-sale	$ 82,730	$ 51,779