5. Changes in the allowance for loan losses (Details) (USD $)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Allowance for loan losses, Ending balance	$ 3,926,119	$ 3,851,369	$ 3,926,119	$ 3,851,369	$ 3,886,502
Total Allowance for loan losses	3,926,119	3,851,369	3,926,119	3,851,369	3,886,502
Total Loans	408,181,683	393,521,845	408,181,683	393,521,845	388,672,039
Commercial Portfolio Segment [Member]
Allowance for loan losses, Beginning balance	388,576	256,448	342,314	302,421	302,421
Charge-offs	(115,100)	(2,427)	(124,934)	(3,127)	(22,050)
Recoveries	1,268	3,416	2,520	11,522	13,225
Provisions	108,779	(10,870)	163,623	(64,249)	48,718
Allowance for loan losses, Ending balance	383,523	246,567	383,523	246,567	342,314
Allowance for loan losses evaluated for impairment, Individually	0	0	0	0	70,600
Allowance for loan losses evaluated for impairment, Collectively	383,523	246,567	383,523	246,567	271,714
Total Allowance for loan losses	383,523	246,567	383,523	246,567	342,314
Loans evaluated for impairment, Individually	985,350	856,643	985,350	856,643	1,000,120
Loans evaluated for impairment, Collectively	51,711,461	36,003,844	51,711,461	36,003,844	38,514,487
Total Loans	52,696,811	36,860,487	52,696,811	36,860,487	39,514,607
Commercial real estate
Allowance for loan losses, Beginning balance	1,389,368	1,396,946	1,385,939	1,391,898	1,391,898
Charge-offs	(8,259)	0	(55,057)	0	(197,367)
Recoveries	108	1,091	863	2,181	8,479
Provisions	4,966	(2,687)	54,438	1,271	182,929
Allowance for loan losses, Ending balance	1,386,183	1,395,350	1,386,183	1,395,350	1,385,939
Allowance for loan losses evaluated for impairment, Individually	15,100	6,100	15,100	6,100	57,500
Allowance for loan losses evaluated for impairment, Collectively	1,371,083	1,389,250	1,371,083	1,389,250	1,328,439
Total Allowance for loan losses	1,386,183	1,395,350	1,386,183	1,395,350	1,385,939
Loans evaluated for impairment, Individually	3,459,215	1,471,703	3,459,215	1,471,703	3,669,260
Loans evaluated for impairment, Collectively	127,780,334	135,801,602	127,780,334	135,801,602	128,600,108
Total Loans	131,239,549	137,273,305	131,239,549	137,273,305	132,269,368
Residential real estate 1st lien
Allowance for loan losses, Beginning balance	1,595,453		1,578,493	1,830,816	1,830,816
Charge-offs	(125,000)		(183,474)		(521,608)
Recoveries	366		1,823		42,593
Provisions	2,842		76,819		226,692
Allowance for loan losses, Ending balance	1,473,661		1,473,661		1,578,493
Allowance for loan losses evaluated for impairment, Individually	144,300		144,300		283,200
Allowance for loan losses evaluated for impairment, Collectively	1,329,361		1,329,361		1,295,293
Total Allowance for loan losses	1,473,661		1,473,661		1,578,493
Loans evaluated for impairment, Individually	1,345,724		1,345,724		2,366,326
Loans evaluated for impairment, Collectively	165,275,416		165,275,416		157,169,632
Total Loans	166,621,140		166,621,140		159,535,958
Residential Real Estate Jr Lien
Allowance for loan losses, Beginning balance	318,075		331,684	0	0
Charge-offs	0		(60,287)		(96,961)
Recoveries	62		1,418		20
Provisions	50,802		96,124		428,625
Allowance for loan losses, Ending balance	368,939		368,939		331,684
Allowance for loan losses evaluated for impairment, Individually	21,000		21,000		47,200
Allowance for loan losses evaluated for impairment, Collectively	347,939		347,939		284,484
Total Allowance for loan losses	368,939		368,939		331,684
Loans evaluated for impairment, Individually	301,796		301,796		434,664
Loans evaluated for impairment, Collectively	45,951,489		45,951,489		45,452,303
Total Loans	46,253,285		46,253,285		45,886,967
Residential Real Estate
Allowance for loan losses, Beginning balance		1,756,119		1,830,816	1,830,816
Charge-offs		(82,646)		(271,446)
Recoveries		600		600
Provisions		291,867		405,970
Allowance for loan losses, Ending balance		1,965,940		1,965,940
Allowance for loan losses evaluated for impairment, Individually		366,300		366,300
Allowance for loan losses evaluated for impairment, Collectively		1,599,640		1,599,640
Total Allowance for loan losses		1,965,940		1,965,940
Loans evaluated for impairment, Individually		2,644,713		2,644,713
Loans evaluated for impairment, Collectively		204,683,430		204,683,430
Total Loans		207,328,143		207,328,143
Consumer Portfolio Segment [Member]
Allowance for loan losses, Beginning balance	124,022	151,865	124,779	151,948	151,948
Charge-offs	(36,714)	(26,523)	(60,373)	(64,113)	(103,687)
Recoveries	6,900	10,440	17,116	22,817	35,923
Provisions	32,706	(3,250)	45,392	21,880	40,595
Allowance for loan losses, Ending balance	126,914	132,532	126,914	132,532	124,779
Allowance for loan losses evaluated for impairment, Individually	0	0	0	0	0
Allowance for loan losses evaluated for impairment, Collectively	126,914	132,532	126,914	132,532	124,779
Total Allowance for loan losses	126,914	132,532	126,914	132,532	124,779
Loans evaluated for impairment, Individually	0	0	0	0	0
Loans evaluated for impairment, Collectively	11,370,898	12,059,910	11,370,898	12,059,910	11,465,139
Total Loans	11,370,898	12,059,910	11,370,898	12,059,910	11,465,139
Unallocated
Allowance for loan losses, Beginning balance	136,995	148,540	123,293	50,852	50,852
Charge-offs	0	0	0	0	0
Recoveries	0	0	0	0	0
Provisions	49,904	(37,560)	63,606	60,128	72,441
Allowance for loan losses, Ending balance	186,899	110,980	186,899	110,980	123,293
Allowance for loan losses evaluated for impairment, Individually	0	0	0	0	0
Allowance for loan losses evaluated for impairment, Collectively	186,899	110,980	186,899	110,980	123,293
Total Allowance for loan losses	$ 186,899	$ 110,980	$ 186,899	$ 110,980	$ 123,293