5. Loans, Allowance for Loan Losses and Credit Quality (Details 1) - USD ($)	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
30-89 Days	$ 8,193,942	$ 4,594,475	$ 6,365,447
90 Days or more	1,746,696	2,200,265	1,092,861
Total Past Due	9,940,638	6,794,740	7,458,308
Current	445,107,547	451,324,689	445,115,286
Total Loans	455,048,185	458,119,429	452,573,594
Non-Accrual Loans	3,067,609	5,237,071	4,922,520
90 Days or More and Accruing	906,024	923,184	342,433
Commercial and industrial
30-89 Days	37,333	224,997	368,737
90 Days or more	204,354	168,244	385,212
Total Past Due	241,687	393,241	753,949
Current	63,298,653	64,797,883	66,693,388
Total Loans	63,540,340	65,191,124	67,447,337
Non-Accrual Loans	256,456	441,103	945,226
90 Days or More and Accruing	0	13,556	0
Commercial Real Estate
30-89 Days	3,825,884	888,994	840,817
90 Days or more	428,545	560,439	5,313
Total Past Due	4,254,429	1,449,433	846,130
Current	173,950,891	176,757,109	170,606,974
Total Loans	178,205,320	178,206,542	171,453,104
Non-Accrual Loans	966,071	2,400,757	2,174,472
90 Days or More and Accruing	19,810	45,356	5,313
Residential real estate - 1st lien
30-89 Days	3,950,062	2,875,768	4,663,341
90 Days or more	991,614	1,408,551	681,381
Total Past Due	4,941,676	4,284,319	5,344,722
Current	157,652,699	158,475,954	156,249,589
Total Loans	162,594,375	162,760,273	161,594,311
Non-Accrual Loans	1,467,171	2,009,079	1,420,371
90 Days or More and Accruing	764,031	801,241	316,165
Residential real estate - Jr lien
30-89 Days	228,117	521,373	420,073
90 Days or more	122,183	63,031	13,375
Total Past Due	350,300	584,404	433,448
Current	43,567,425	44,135,862	44,245,508
Total Loans	43,917,725	44,720,266	44,678,956
Non-Accrual Loans	377,911	386,132	382,451
90 Days or More and Accruing	122,183	63,031	13,375
Consumer
30-89 Days	152,546	83,343	72,479
90 Days or more	0	0	7,580
Total Past Due	152,546	83,343	80,059
Current	6,637,879	7,157,881	7,319,827
Total Loans	6,790,425	7,241,224	7,399,886
Non-Accrual Loans	0	0	0
90 Days or More and Accruing	$ 0	$ 0	$ 7,580