Loans and Allowance for Credit Losses (Details 1) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	$ 26,868	$ 27,588
Loans collectively evaluated for impairment	794,211	767,526
Total loans	821,079	795,114
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	1,292	1,401
Loans collectively evaluated for impairment	7,066	6,915
Total allowance for credit losses	8,358	8,316
Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	9,670	11,598
Loans collectively evaluated for impairment	71,478	74,034
Total loans	81,148	85,632
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	764	619
Loans collectively evaluated for impairment	980	1,027
Total allowance for credit losses	1,744	1,646
Residential real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	9,719	7,945
Loans collectively evaluated for impairment	310,322	299,118
Total loans	320,041	307,063
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	207	435
Loans collectively evaluated for impairment	1,828	1,746
Total allowance for credit losses	2,035	2,181
Commercial real estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	7,188	7,762
Loans collectively evaluated for impairment	338,525	322,491
Total loans	345,713	330,253
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	276	340
Loans collectively evaluated for impairment	2,595	2,659
Total allowance for credit losses	2,871	2,999
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	192	161
Loans collectively evaluated for impairment	66,767	64,750
Total loans	66,959	64,911
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	45	0
Loans collectively evaluated for impairment	632	558
Total allowance for credit losses	677	558
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	99	122
Loans collectively evaluated for impairment	7,119	7,133
Total loans	7,218	7,255
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	0	7
Loans collectively evaluated for impairment	206	149
Total allowance for credit losses	206	156
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	0	0
Total loans	0	0
Allowance for credit losses allocated to:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	825	776
Total allowance for credit losses	$ 825	$ 776