Loan Quality (Allowance For Loan Losses, By Loan Segment) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				$ 10,086				$ 9,111	$ 10,086	$ 9,111	$ 9,702
Charge-offs									(3,082)	(571)	(1,573)
Recoveries									296	261	218
Provision	$ 450	$ 1,150	$ 1,875	300	$ 250	$ 400	$ 310	325	3,775	1,285	764
Allowance, Ending Balance	11,075				10,086				11,075	10,086	9,111
Loans evaluated for allowance individually												$ 14,683	$ 16,022
Loans evaluated for allowance collectively												879,190	765,994
Total Loans												893,873	782,016
Allowance established for loans evaluated individually													9
Allowance established for loan evaluated collectively												11,075	10,077
Total Allowance	11,075			10,086	10,086			9,111	10,086	9,111	9,702	11,075	10,086
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans												218,783	212,391
Residential Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				194				214	194	214	276
Charge-offs									(41)	(21)	(41)
Recoveries										18
Provision									71	(17)	(21)
Allowance, Ending Balance	224				194				224	194	214
Loans evaluated for allowance individually												480	502
Loans evaluated for allowance collectively												8,495	7,386
Total Loans												8,975	7,888
Allowance established for loan evaluated collectively												224	194
Total Allowance	224			194	194			214	194	214	276	224	194
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				5,649				4,978	5,649	4,978	5,196
Charge-offs									(2,751)		(408)
Recoveries									19	14	50
Provision									3,192	657	140
Allowance, Ending Balance	6,109				5,649				6,109	5,649	4,978
Loans evaluated for allowance individually												13,523	14,309
Loans evaluated for allowance collectively												377,061	326,386
Total Loans												390,584	340,695
Allowance established for loan evaluated collectively												6,109	5,649
Total Allowance	6,109			5,649	5,649			4,978	5,649	4,978	5,196	6,109	5,649
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				1,519				1,515	1,519	1,515	2,099
Charge-offs									(74)	(270)	(644)
Recoveries									167	148	65
Provision									281	126	(5)
Allowance, Ending Balance	1,893				1,519				1,893	1,519	1,515
Loans evaluated for allowance individually													230
Loans evaluated for allowance collectively												270,826	215,712
Total Loans												270,826	215,942
Allowance established for loans evaluated individually													9
Allowance established for loan evaluated collectively												1,893	1,510
Total Allowance	1,893			1,519	1,519			1,515	1,519	1,515	2,099	1,893	1,519
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				102				127	102	127	138
Charge-offs									(167)	(198)	(189)
Recoveries									75	74	82
Provision									90	99	96
Allowance, Ending Balance	100				102				100	102	127
Loans evaluated for allowance collectively												4,705	5,100
Total Loans												4,705	5,100
Allowance established for loan evaluated collectively												100	102
Total Allowance	100			102	102			127	102	127	138	100	102
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				1,325				1,012	1,325	1,012	852
Provision									(4)	313	160
Allowance, Ending Balance	1,321				1,325				1,321	1,325	1,012
Allowance established for loan evaluated collectively												1,321	1,325
Total Allowance	1,321			1,325	1,325			1,012	1,325	1,012	852	1,321	1,325
First Liens [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				989				994	989	994	913
Charge-offs									(49)	(43)	(291)
Recoveries									35	7	21
Provision									130	31	351
Allowance, Ending Balance	1,105				989				1,105	989	994
Loans evaluated for allowance individually												628	930
Loans evaluated for allowance collectively												167,942	160,548
Total Loans												168,570	161,478
Allowance established for loan evaluated collectively												1,105	989
Total Allowance	1,105			989	989			994	989	994	913	1,105	989
Junior Liens & Lines Of Credit [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				308				271	308	271	228
Charge-offs										(39)
Provision									15	76	43
Allowance, Ending Balance	323				308				323	308	271
Loans evaluated for allowance individually												52	51
Loans evaluated for allowance collectively												50,161	50,862
Total Loans												50,213	50,913
Allowance established for loan evaluated collectively												323	308
Total Allowance	$ 323			$ 308	$ 308			$ 271	$ 308	$ 271	$ 228	$ 323	$ 308