Loans (Details 7) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Past due aging of loan portfolio
30 to 59 Days Past Due	$ 1,429	$ 938
60 to 89 Days Past Due	1,077	506
Greater Than 90 Days	7,862	13,799
Total Past Due	10,368	15,243
Current	187,911	191,456
Total loans	198,279	206,699
Loans > 90 Days and Accruing	430
Commercial and industrial [Member]
Past due aging of loan portfolio
30 to 59 Days Past Due	55
Greater Than 90 Days		39
Total Past Due	55	39
Current	25,594	26,164
Total loans	25,649	26,203
Loans > 90 Days and Accruing
Construction [Member]
Past due aging of loan portfolio
Greater Than 90 Days		2,175
Total Past Due		2,175
Current	1,881	2,186
Total loans	1,881	4,361
Loans > 90 Days and Accruing
Commercial and real estate [Member]
Past due aging of loan portfolio
30 to 59 Days Past Due	475	674
60 to 89 Days Past Due	207
Greater Than 90 Days	4,767	4,721
Total Past Due	5,449	5,395
Current	89,086	89,118
Total loans	94,535	94,513
Loans > 90 Days and Accruing	430
Residential mortgage [Member]
Past due aging of loan portfolio
30 to 59 Days Past Due	211	204
60 to 89 Days Past Due	870	43
Greater Than 90 Days	434	4,187
Total Past Due	1,515	4,434
Current	16,871	16,620
Total loans	18,386	21,054
Loans > 90 Days and Accruing
Home equity [Member]
Past due aging of loan portfolio
30 to 59 Days Past Due	687	60
60 to 89 Days Past Due		463
Greater Than 90 Days	2,661	2,677
Total Past Due	3,348	3,200
Current	53,154	55,976
Total loans	56,502	59,176
Loans > 90 Days and Accruing
Individual loans for household and other personal expenditures [Member]
Past due aging of loan portfolio
30 to 59 Days Past Due	1
Total Past Due	1
Current	1,325	1,392
Total loans	1,326	1,392
Loans > 90 Days and Accruing