5. Loans, Allowance for Loan Losses and Credit Quality (Details 4) - USD ($)	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Group A	$ 433,348,685	$ 438,208,275	$ 434,501,884
Group B	9,865,531	10,066,246	8,277,273
Group C	11,833,969	9,844,908	9,794,437
Total Loans	455,048,185	458,119,429	452,573,594
Commercial and industrial
Group A	58,289,285	59,764,081	63,693,155
Group B	4,448,662	4,724,729	2,900,660
Group C	802,393	702,314	853,522
Total Loans	63,540,340	65,191,124	67,447,337
Commercial Real Estate
Group A	165,816,389	168,326,527	160,845,487
Group B	4,638,741	4,529,493	4,873,360
Group C	7,750,190	5,350,522	5,734,257
Total Loans	178,205,320	178,206,542	171,453,104
Residential real estate - 1st lien
Group A	159,255,456	158,834,849	158,579,882
Group B	593,394	599,516	233,858
Group C	2,745,525	3,325,908	2,780,571
Total Loans	162,594,375	162,760,273	161,594,311
Residential real estate - Jr lien
Group A	43,197,130	44,041,594	43,991,054
Group B	184,734	212,508	269,395
Group C	535,861	466,164	418,507
Total Loans	43,917,725	44,720,266	44,678,956
Consumer
Group A	6,790,425	7,241,224	7,392,306
Group B	0	0	0
Group C	0	0	7,580
Total Loans	$ 6,790,425	$ 7,241,224	$ 7,399,886