Loans and the Allowance for Loan Losses, Activity In Period (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Allowance for loan losses by segment [Roll Forward]
Beginning Balance		$ 8,245	$ 7,738	$ 7,738
Charges-offs		(406)		(1,770)
Recoveries		34		347
Provision for loan losses		650	150	1,930
Ending balance		8,523		8,245
Ending balances individually evaluated for impairment					$ 1,128	$ 800
Ending balances collectively evaluated for impairment					7,395	7,445
Ending balance		8,245	7,738	8,245	8,523	8,245
Loan Balances [Abstract]
Ending balance individually evaluated for impairment					21,612	20,056
Ending balance collectively evaluated for impairment					612,698	583,826
Ending balance					634,310	603,882
Commercial [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance		1,493	633	633
Charges-offs		(138)		(915)
Recoveries		8		79
Provision for loan losses		105		1,696
Ending balance		1,468		1,493
Ending balances individually evaluated for impairment					359	271
Ending balances collectively evaluated for impairment					1,109	1,222
Ending balance		1,493	633	633	1,468	1,493
Loan Balances [Abstract]
Ending balance individually evaluated for impairment					1,899	989
Ending balance collectively evaluated for impairment					55,065	53,445
Ending balance					56,964	54,434
Real Estate - Construction [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance		846	985	985
Charges-offs		0		0
Recoveries		0		3
Provision for loan losses		(259)		(142)
Ending balance		587		846
Ending balances individually evaluated for impairment					20	22
Ending balances collectively evaluated for impairment					567	824
Ending balance		846	985	846	587	846
Loan Balances [Abstract]
Ending balance individually evaluated for impairment					622	624
Ending balance collectively evaluated for impairment					22,547	22,492
Ending balance					23,169	23,116
Real Estate - Mortgage [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance	[1]	5,267	5,628	5,628
Charges-offs	[1]	(204)		(504)
Recoveries	[1]	4		197
Provision for loan losses	[1]	463		(54)
Ending balance	[1]	5,530		5,267
Ending balances individually evaluated for impairment	[1]				749	507
Ending balances collectively evaluated for impairment	[1]				4,781	4,760
Ending balance	[1]	5,267	5,628	5,267	5,530	5,267
Loan Balances [Abstract]
Ending balance individually evaluated for impairment	[1]				19,010	18,362
Ending balance collectively evaluated for impairment	[1]				432,608	430,046
Ending balance	[1]				451,618	448,408
Consumer [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance		455	279	279
Charges-offs		(33)		(204)
Recoveries		4		28
Provision for loan losses		342		352
Ending balance		768		455
Ending balances individually evaluated for impairment					0	0
Ending balances collectively evaluated for impairment					768	455
Ending balance		455	279	455	768	455
Loan Balances [Abstract]
Ending balance individually evaluated for impairment					81	81
Ending balance collectively evaluated for impairment					87,030	58,826
Ending balance					87,111	58,907
Other [Member]
Allowance for loan losses by segment [Roll Forward]
Beginning Balance		184	213	213
Charges-offs		(31)		(147)
Recoveries		18		40
Provision for loan losses		(1)		78
Ending balance		170		184
Ending balances individually evaluated for impairment					0	0
Ending balances collectively evaluated for impairment					170	184
Ending balance		$ 184	$ 213	$ 213	170	184
Loan Balances [Abstract]
Ending balance individually evaluated for impairment					0	0
Ending balance collectively evaluated for impairment					15,448	19,017
Ending balance					$ 15,448	$ 19,017

[1] The real estate-mortgage segment includes residential 1 - 4 family, commercial real estate, second mortgages and equity lines of credit.