Other Borrowed Funds and Subordinated Debentures (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of the maturity distribution of FHLBB advances with the weighted average interest rates
Within one year	$ 46,000	$ 81,500	$ 91,500
Over one year to two years	17,500	23,500	9,000
Over two years to three years	19,500	17,500	41,500
Over three years to five years	90,000	74,500	37,000
Over five years	22,000	47,000	42,000
Federal Home Loan Bank, Advances, Total	$ 195,000	$ 244,000	$ 221,000
Within one year Weighted Average Rate	1.86%	0.42%	0.39%
Over one year to two years Weighted Average Rate	3.01%	3.34%	1.98%
Over three years to five years, Weighted Average Rate	3.33%	2.90%	2.70%
Over two years to three years Weighted Average Rate	2.42%	3.01%	3.82%
Over five years Weighted Average Rate	4.19%	4.38%	4.55%
Weighted average rate total	2.96%	2.41%	2.28%