5. Loans, Allowance for Loan Losses and Credit Quality (Details 6) (USD $)	Mar. 31, 2012 integer
Number of TDRs contracts which subsequently default	12
Recorded Investment	$ 1,268,506
Commercial Portfolio Segment [Member]
Number of TDRs contracts which subsequently default	4
Recorded Investment	675,309
Commercial real estate
Number of TDRs contracts which subsequently default	3
Recorded Investment	475,965
Residential real estate 1st lien
Number of TDRs contracts which subsequently default	5
Recorded Investment	$ 117,232