5. Loans, Allowance for Loan Losses and Credit Quality (Details 4) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Group A	$ 402,686,844	$ 402,502,311	$ 374,378,907
Group B	5,399,414	5,456,205	5,589,019
Group C	9,382,877	8,416,932	16,277,920
Total Loans	417,469,135	416,375,448	396,245,846
Commercial and industrial
Group A	49,335,387	47,689,238	43,981,911
Group B	501,888	593,838	503,551
Group C	1,207,215	1,000,872	1,970,373
Total Loans	51,044,490	49,283,948	46,455,835
Commercial Real Estate
Group A	129,675,041	131,643,756	118,545,738
Group B	4,282,500	4,139,367	4,433,089
Group C	4,826,931	4,024,394	7,941,591
Total Loans	138,784,472	139,807,517	130,920,418
Residential real estate - 1st lien
Group A	168,993,626	166,374,493	156,732,679
Group B	183,678	404,752	330,433
Group C	2,853,979	2,833,564	5,459,351
Total Loans	172,031,283	169,612,809	162,522,463
Residential real estate - Jr lien
Group A	44,989,095	46,162,420	44,121,439
Group B	431,348	318,248	321,946
Group C	492,403	548,355	902,756
Total Loans	45,912,846	47,029,023	45,346,141
Consumer
Group A	9,693,695	10,632,404	10,997,140
Group B	0	0	0
Group C	2,349	9,747	3,849
Total Loans	$ 9,696,044	$ 10,642,151	$ 11,000,989