Loans, Credit exposure (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 813,057	$ 794,671
Threshold limit to consider loan as nonperforming	90 days
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	125,163	122,553
Commercial Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	50,856	41,822
Commercial Real Estate Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	366,722	364,616
Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	175,387	171,917
Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	89,725	87,797
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,204	5,966
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	123,824	121,033
Pass [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	45,033	35,563
Pass [Member] | Commercial Real Estate Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	357,138	351,801
Pass [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	163,897	158,478
Pass [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	87,613	85,163
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,294	1,500
Special Mention [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	826	1,005
Special Mention [Member] | Commercial Real Estate Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,526	6,795
Special Mention [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	8,103	8,242
Special Mention [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	1,414	1,650
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	45	20
Substandard [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	4,997	5,254
Substandard [Member] | Commercial Real Estate Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,058	6,020
Substandard [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	3,387	5,197
Substandard [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	698	984
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Commercial Real Estate Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Commercial Real Estate Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Doubtful [Member] | Home equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	0	0
Performing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	5,199	5,966
Nonperforming [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Loans	$ 5	$ 0