5. Loans, Allowance for Loan Losses and Credit Quality (Details 4) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Group A	$ 416,349,459	$ 402,502,311	$ 393,004,096
Group B	6,658,105	5,456,205	5,104,798
Group C	8,974,223	8,416,932	9,501,811
Total Loans	431,981,787	416,375,448	407,610,705
Commercial and industrial
Group A	51,937,275	47,689,238	45,649,737
Group B	2,412,663	593,838	590,534
Group C	1,150,797	1,000,872	1,244,368
Total Loans	55,500,735	49,283,948	47,484,639
Commercial Real Estate
Group A	139,168,914	131,643,756	127,984,841
Group B	3,572,369	4,139,367	3,787,365
Group C	4,539,504	4,024,394	4,244,348
Total Loans	147,280,787	139,807,517	136,016,554
Residential real estate - 1st lien
Group A	171,694,502	166,374,493	162,990,115
Group B	175,081	404,752	408,051
Group C	2,638,426	2,833,564	3,659,304
Total Loans	174,508,009	169,612,809	167,057,470
Residential real estate - Jr lien
Group A	44,144,667	46,162,420	45,373,633
Group B	497,992	318,248	318,848
Group C	636,741	548,355	336,757
Total Loans	45,279,400	47,029,023	46,029,238
Consumer
Group A	9,404,101	10,632,404	11,005,770
Group B	0	0	0
Group C	8,755	9,747	17,034
Total Loans	$ 9,412,856	$ 10,642,151	$ 11,022,804