Allowance for Loan Losses (Allowance for Loan Losses By Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	$ 5,080	$ 5,488	$ 6,577
Charge-Offs	(456)	(1,483)	(1,322)
Recoveries	562	725	233
(Recovery of) Provision for loan losses	(227)	350	0
Ending Balance	4,959	5,080	5,488
Ending balance: Individually evaluated for impairment	576	643	1,478
Ending balance: collectively evaluated for impairment	4,383	4,437	4,010
Loans: Ending balance	495,573	469,820	444,273
Ending balance individually evaluated for impairment	14,003	17,039	13,699
Ending balance collectively evaluated for impairment	481,570	452,783	430,574
Construction And Farmland [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	951	1,032	1,280
Charge-Offs	(166)	(482)	(20)
Recoveries	75	26	5
(Recovery of) Provision for loan losses	(85)	375	(233)
Ending Balance	775	951	1,032
Ending balance: Individually evaluated for impairment	10	93	218
Ending balance: collectively evaluated for impairment	765	858	814
Loans: Ending balance	41,569	36,489	36,933
Ending balance individually evaluated for impairment	1,392	2,665	2,674
Ending balance collectively evaluated for impairment	40,177	33,824	34,259
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	1,977	2,225	2,820
Charge-Offs	(152)	(808)	(507)
Recoveries	142	63	109
(Recovery of) Provision for loan losses	355	497	(197)
Ending Balance	2,322	1,977	2,225
Ending balance: Individually evaluated for impairment	423	303	627
Ending balance: collectively evaluated for impairment	1,899	1,674	1,598
Loans: Ending balance	233,626	227,710	221,483
Ending balance individually evaluated for impairment	7,209	6,550	4,922
Ending balance collectively evaluated for impairment	226,417	221,160	216,561
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	1,347	1,337	1,182
Charge-Offs	(47)	(83)	(289)
Recoveries	115	381	7
(Recovery of) Provision for loan losses	(147)	(288)	437
Ending Balance	1,268	1,347	1,337
Ending balance: Individually evaluated for impairment	141	203	299
Ending balance: collectively evaluated for impairment	1,127	1,144	1,038
Loans: Ending balance	175,172	161,299	148,166
Ending balance individually evaluated for impairment	4,555	5,716	4,750
Ending balance collectively evaluated for impairment	170,617	155,583	143,416
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	464	555	880
Charge-Offs	0	0	(403)
Recoveries	181	164	47
(Recovery of) Provision for loan losses	(434)	(255)	31
Ending Balance	211	464	555
Ending balance: Individually evaluated for impairment	2	44	334
Ending balance: collectively evaluated for impairment	209	420	221
Loans: Ending balance	29,366	28,132	20,865
Ending balance individually evaluated for impairment	847	2,106	1,347
Ending balance collectively evaluated for impairment	28,519	26,026	19,518
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	103	102	107
Charge-Offs	(66)	(86)	(85)
Recoveries	33	87	54
(Recovery of) Provision for loan losses	39	0	26
Ending Balance	109	103	102
Ending balance: Individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	109	103	102
Loans: Ending balance	13,530	13,874	13,785
Ending balance individually evaluated for impairment	0	0	0
Ending balance collectively evaluated for impairment	13,530	13,874	13,785
All Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	42	82	122
Charge-Offs	(25)	(24)	(18)
Recoveries	16	4	11
(Recovery of) Provision for loan losses	20	(20)	(33)
Ending Balance	53	42	82
Ending balance: Individually evaluated for impairment	0	0	0
Ending balance: collectively evaluated for impairment	53	42	82
Loans: Ending balance	2,310	2,316	3,041
Ending balance individually evaluated for impairment	0	0	6
Ending balance collectively evaluated for impairment	2,310	2,316	3,035
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning Balance	196	155	186
Charge-Offs	0	0	0
Recoveries	0	0	0
(Recovery of) Provision for loan losses	25	41	(31)
Ending Balance	221	196	155
Ending balance: Individually evaluated for impairment		0	0
Ending balance: collectively evaluated for impairment	221	196	155
Loans: Ending balance	0	0	0
Ending balance individually evaluated for impairment		$ 0	$ 0
Ending balance collectively evaluated for impairment	$ 0