Loans, Impaired Loan (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	$ 2,002	$ 2,277
Impaired loan, with an related allowance, recorded investment	2,804	3,752
Impaired loan, total, recorded investment	4,806	6,029
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	2,062	2,285
Impaired loan, with an related allowance, unpaid principal balance	2,831	3,789
Impaired loan, total, unpaid principal balance	4,893	6,074
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	646	559
Impaired loan, total, related allowance	646	559
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	2,558	2,864
Impaired loan, with related allowance, average recorded investment	2,837	2,768
Impaired loan, total, average recorded investment	5,395	5,632
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	1	29
Impaired loan, with related allowance, interest income recognized	39	41
Impaired loan, total, interest income recognized	40	70
Commercial [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	9	19
Impaired loan, with an related allowance, recorded investment	0	0
Impaired loan, total, recorded investment	9	19
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	9	19
Impaired loan, with an related allowance, unpaid principal balance	0	0
Impaired loan, total, unpaid principal balance	9	19
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	0	0
Impaired loan, total, related allowance	0	0
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	14	20
Impaired loan, with related allowance, average recorded investment	0	0
Impaired loan, total, average recorded investment	14	20
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	1	1
Impaired loan, with related allowance, interest income recognized	0	0
Impaired loan, total, interest income recognized	1	1
Construction and land development [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	291	18
Impaired loan, with an related allowance, recorded investment	582	1,468
Impaired loan, total, recorded investment	873	1,486
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	333	18
Impaired loan, with an related allowance, unpaid principal balance	582	1,507
Impaired loan, total, unpaid principal balance	915	1,525
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	11	68
Impaired loan, total, related allowance	11	68
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	504	261
Impaired loan, with related allowance, average recorded investment	597	1,551
Impaired loan, total, average recorded investment	1,101	1,812
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	4
Impaired loan, with related allowance, interest income recognized	25	33
Impaired loan, total, interest income recognized	25	37
Commercial real estate [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	984	936
Impaired loan, with an related allowance, recorded investment	2,202	2,266
Impaired loan, total, recorded investment	3,186	3,202
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	990	936
Impaired loan, with an related allowance, unpaid principal balance	2,229	2,264
Impaired loan, total, unpaid principal balance	3,219	3,200
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	631	488
Impaired loan, total, related allowance	631	488
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	919	950
Impaired loan, with related allowance, average recorded investment	2,219	1,198
Impaired loan, total, average recorded investment	3,138	2,148
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	13
Impaired loan, with related allowance, interest income recognized	13	7
Impaired loan, total, interest income recognized	13	20
Residential [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	511	880
Impaired loan, with an related allowance, recorded investment	4	0
Impaired loan, total, recorded investment	515	880
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	523	888
Impaired loan, with an related allowance, unpaid principal balance	4	0
Impaired loan, total, unpaid principal balance	527	888
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	1	0
Impaired loan, total, related allowance	1	0
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	768	1,200
Impaired loan, with related allowance, average recorded investment	4	0
Impaired loan, total, average recorded investment	772	1,200
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	11
Impaired loan, with related allowance, interest income recognized	0	0
Impaired loan, total, interest income recognized	0	11
Home equity [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	205	424
Impaired loan, with an related allowance, recorded investment	0	0
Impaired loan, total, recorded investment	205	424
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	205	424
Impaired loan, with an related allowance, unpaid principal balance	0	0
Impaired loan, total, unpaid principal balance	205	424
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	0	0
Impaired loan, total, related allowance	0	0
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	350	433
Impaired loan, with related allowance, average recorded investment	0	0
Impaired loan, total, average recorded investment	350	433
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	0
Impaired loan, with related allowance, interest income recognized	0	0
Impaired loan, total, interest income recognized	0	0
Consumer [Member]
Recorded Investment [Abstract]
Impaired loan, with no related allowance, recorded investment	2	0
Impaired loan, with an related allowance, recorded investment	16	18
Impaired loan, total, recorded investment	18	18
Unpaid Principal Balance [Abstract]
Impaired loan, with no related allowance, unpaid principal balance	2	0
Impaired loan, with an related allowance, unpaid principal balance	16	18
Impaired loan, total, unpaid principal balance	18	18
Related Allowance [Abstract]
Impaired loan, with no related allowance	0	0
Impaired loan, with related allowance	3	3
Impaired loan, total, related allowance	3	3
Average Recorded Investment [Abstract]
Impaired loan, with no related allowance, average recorded investment	3	0
Impaired loan, with related allowance, average recorded investment	17	19
Impaired loan, total, average recorded investment	20	19
Interest Income Recognized [Abstract]
Impaired loan, with no related allowance, interest income recognized	0	0
Impaired loan, with related allowance, interest income recognized	1	1
Impaired loan, total, interest income recognized	$ 1	$ 1