Loan Quality And Allowance for Credit Losses (Schedule Of Loans By Year Of Origination And Internally Assigned Risk Ratings) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	$ 1,456,191		$ 1,398,077
Current period gross charge-offs, total	(21)	$ (96)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	10,447		41,520
Term loans, one year before current fiscal year	40,965		76,684
Term loans, two years before current fiscal year	75,260		38,819
Term loans, three years before current fiscal year	38,154		24,436
Term loans, four years before current fiscal year	23,916		17,113
Term loans, more than four years before current fiscal year	63,163		47,995
Revolving loans amortized cost basis	60,010		58,413
Revolving loans converted to term	17,418		17,855
Total	329,333		322,835
Residential Real Estate [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	799		5,306
Term loans, one year before current fiscal year	5,150		9,436
Term loans, two years before current fiscal year	9,157		7,529
Term loans, three years before current fiscal year	7,221		10,133
Term loans, four years before current fiscal year	9,918		8,099
Term loans, more than four years before current fiscal year	27,657		20,251
Revolving loans amortized cost basis	3,801		4,266
Total	63,703		65,020
Residential Real Estate [Member] | Residential Real Estate Commercial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	799		5,306
Term loans, one year before current fiscal year	5,150		9,436
Term loans, two years before current fiscal year	9,157		7,529
Term loans, three years before current fiscal year	7,221		10,133
Term loans, four years before current fiscal year	9,918		8,099
Term loans, more than four years before current fiscal year	27,471		20,251
Revolving loans amortized cost basis	3,801		4,079
Total	63,517		64,833
Residential Real Estate [Member] | Residential Real Estate Commercial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, more than four years before current fiscal year	186
Revolving loans amortized cost basis			187
Total	186		187
Residential Real Estate [Member] | Residential Real Estate Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	9,648		36,214
Term loans, one year before current fiscal year	35,815		67,248
Term loans, two years before current fiscal year	66,103		31,290
Term loans, three years before current fiscal year	30,933		14,303
Term loans, four years before current fiscal year	13,998		9,014
Term loans, more than four years before current fiscal year	35,506		27,744
Revolving loans amortized cost basis	56,209		54,147
Revolving loans converted to term	17,418		17,855
Total	265,630		257,815
Residential Real Estate [Member] | Residential Real Estate Consumer [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	9,648		36,214
Term loans, one year before current fiscal year	35,815		67,248
Term loans, two years before current fiscal year	66,103		31,290
Term loans, three years before current fiscal year	30,933		14,303
Term loans, four years before current fiscal year	13,998		9,014
Term loans, more than four years before current fiscal year	35,493		27,744
Revolving loans amortized cost basis	56,209		54,147
Revolving loans converted to term	17,418		17,855
Total	265,617		257,815
Residential Real Estate [Member] | Residential Real Estate Consumer [Member] | Nonperforming [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, more than four years before current fiscal year	13
Total	13
Residential Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	3,518		25,489
Term loans, one year before current fiscal year	40,124		4,141
Term loans, two years before current fiscal year	2,683		403
Term loans, three years before current fiscal year	403		1,150
Term loans, four years before current fiscal year	582		159
Term loans, more than four years before current fiscal year	1,658		1,085
Total	48,968		32,427
Residential Real Estate - Construction [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	1,921		5,582
Term loans, one year before current fiscal year	15,574		3,306
Term loans, two years before current fiscal year	2,201		403
Term loans, three years before current fiscal year	403		1,150
Term loans, four years before current fiscal year	582		159
Term loans, more than four years before current fiscal year	1,658		1,085
Total	22,339		11,685
Residential Real Estate - Construction [Member] | Residential Real Estate Commercial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	1,921		5,582
Term loans, one year before current fiscal year	15,574		3,306
Term loans, two years before current fiscal year	2,201		403
Term loans, three years before current fiscal year	403		1,150
Term loans, four years before current fiscal year	582		159
Term loans, more than four years before current fiscal year	1,658		1,085
Total	22,339		11,685
Residential Real Estate - Construction [Member] | Residential Real Estate Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	1,597		19,907
Term loans, one year before current fiscal year	24,550		835
Term loans, two years before current fiscal year	482
Total	26,629		20,742
Residential Real Estate - Construction [Member] | Residential Real Estate Consumer [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	1,597		19,907
Term loans, one year before current fiscal year	24,550		835
Term loans, two years before current fiscal year	482
Total	26,629		20,742
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	41,435		95,410
Term loans, one year before current fiscal year	95,143		228,190
Term loans, two years before current fiscal year	231,025		108,423
Term loans, three years before current fiscal year	105,913		94,939
Term loans, four years before current fiscal year	92,991		39,170
Term loans, more than four years before current fiscal year	247,012		220,893
Revolving loans amortized cost basis	18,268		16,340
Total	831,787		803,365
Current period gross charge-offs, prior			(2)
Current period gross charge-offs, total		(2)	(2)
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	41,435		95,410
Term loans, one year before current fiscal year	95,143		221,889
Term loans, two years before current fiscal year	215,877		106,385
Term loans, three years before current fiscal year	103,900		93,228
Term loans, four years before current fiscal year	92,285		32,546
Term loans, more than four years before current fiscal year	235,849		218,875
Revolving loans amortized cost basis	18,218		16,290
Total	802,707		784,623
Commercial Real Estate [Member] | OAEM [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, two years before current fiscal year	8,879		1,772
Term loans, three years before current fiscal year	1,760		1,711
Term loans, four years before current fiscal year	706		6,624
Term loans, more than four years before current fiscal year	9,509
Total	20,854		10,107
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, one year before current fiscal year			6,301
Term loans, two years before current fiscal year	6,269		266
Term loans, three years before current fiscal year	253
Term loans, more than four years before current fiscal year	1,654		2,018
Revolving loans amortized cost basis	50		50
Total	8,226		8,635
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	6,434		25,398
Term loans, one year before current fiscal year	26,234		16,300
Term loans, two years before current fiscal year	15,712		27,965
Term loans, three years before current fiscal year	26,878		39,427
Term loans, four years before current fiscal year	39,072		18,263
Term loans, more than four years before current fiscal year	76,491		60,126
Revolving loans amortized cost basis	47,189		43,118
Total	238,010		230,597
Current period gross charge-offs, current year	(3)		(11)
Current period gross charge-offs, two years before current fiscal year			(287)
Current period gross charge-offs, revolving loans amortized cost basis			(161)
Current period gross charge-offs, total	(3)	(66)	(459)
Commercial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	6,434		25,398
Term loans, one year before current fiscal year	26,234		16,289
Term loans, two years before current fiscal year	15,702		27,545
Term loans, three years before current fiscal year	26,473		37,927
Term loans, four years before current fiscal year	37,616		18,196
Term loans, more than four years before current fiscal year	76,484		60,126
Revolving loans amortized cost basis	46,964		42,595
Total	235,907		228,076
Commercial [Member] | OAEM [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, one year before current fiscal year			11
Term loans, two years before current fiscal year	10		420
Term loans, three years before current fiscal year	405		1,500
Term loans, four years before current fiscal year	1,456		9
Term loans, more than four years before current fiscal year	7
Revolving loans amortized cost basis	175		250
Total	2,053		2,190
Commercial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, four years before current fiscal year			58
Revolving loans amortized cost basis	50		273
Total	50		331
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	605		2,289
Term loans, one year before current fiscal year	1,838		1,140
Term loans, two years before current fiscal year	1,059		386
Term loans, three years before current fiscal year	336		1,683
Term loans, four years before current fiscal year	1,633		36
Term loans, more than four years before current fiscal year	40		27
Revolving loans amortized cost basis	2,582		3,292
Total	8,093		8,853
Current period gross charge-offs, current year	(12)		(44)
Current period gross charge-offs, three years before current fiscal year	(1)
Current period gross charge-offs, four years before current fiscal year	(1)		(6)
Current period gross charge-offs, prior	(1)
Current period gross charge-offs, revolving loans amortized cost basis	(3)		(49)
Current period gross charge-offs, total	(18)	$ (28)	(99)
Consumer [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, current year	605		2,289
Term loans, one year before current fiscal year	1,838		1,140
Term loans, two years before current fiscal year	1,059		386
Term loans, three years before current fiscal year	336		1,682
Term loans, four years before current fiscal year	1,633		36
Term loans, more than four years before current fiscal year	40		27
Revolving loans amortized cost basis	2,575		3,291
Total	8,086		8,851
Consumer [Member] | Nonperforming [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Term loans, three years before current fiscal year			1
Revolving loans amortized cost basis	7		1
Total	$ 7		$ 2