Loans, Allowance for Credit Losses and Credit Quality (Details 4) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Age analysis of past due loans receivable
30-59 Days Past Due	$ 4,383,000	$ 1,421,000
60-89 Days Past Due	204,000	32,000
Greater than 90 Days	3,448,000	3,644,000
Total Past Due	8,035,000	5,097,000
Current	289,751,000	285,684,000
Total Loans	297,786,000	290,781,000
Recorded Investment 90 Days and Accruing	285,000	0
Commercial [Member]
Age analysis of past due loans receivable
30-59 Days Past Due	4,299,000	0
60-89 Days Past Due	197,000	32,000
Greater than 90 Days	0	178,000
Total Past Due	4,496,000	210,000
Current	42,615,000	47,473,000
Total Loans	47,111,000	47,683,000
Recorded Investment 90 Days and Accruing	0	0
Construction Commercial Real Estate [Member]
Age analysis of past due loans receivable
30-59 Days Past Due	0	229,000
60-89 Days Past Due	0	0
Greater than 90 Days	1,152,000	1,152,000
Total Past Due	1,152,000	1,381,000
Current	36,069,000	33,645,000
Total Loans	37,221,000	35,026,000
Recorded Investment 90 Days and Accruing	0	0
Other Commercial Real Estate [Member]
Age analysis of past due loans receivable
30-59 Days Past Due	0	482,000
60-89 Days Past Due	0	0
Greater than 90 Days	285,000	0
Total Past Due	285,000	482,000
Current	121,376,000	114,401,000
Total Loans	121,661,000	114,883,000
Recorded Investment 90 Days and Accruing	285,000	0
Residential real estate [Member]
Age analysis of past due loans receivable
30-59 Days Past Due	80,000	687,000
60-89 Days Past Due	7,000	0
Greater than 90 Days	1,992,000	1,972,000
Total Past Due	2,079,000	2,659,000
Current	81,461,000	81,660,000
Total Loans	83,540,000	84,319,000
Recorded Investment 90 Days and Accruing	0	0
Consumer [Member]
Age analysis of past due loans receivable
30-59 Days Past Due	4,000	23,000
60-89 Days Past Due	0	0
Greater than 90 Days	19,000	342,000
Total Past Due	23,000	365,000
Current	8,230,000	8,505,000
Total Loans	8,253,000	8,870,000
Recorded Investment 90 Days and Accruing	$ 0	$ 0