5. Impaired loans by segment (Details) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Commercial
Recorded Investment With no related allowance recorded	$ 985,350	$ 856,643	$ 380,624
Recorded Investment With an allowance recorded	0	0	619,496
Unpaid Principal Balance With no related allowance recorded	1,098,373	859,175	391,800
Unpaid Principal Balance With an allowance recorded	0	0	637,729
Related Allowance With an allowance recorded	0	0	70,600
Average Recorded Investment With no related allowance recorded	601,073	294,667	332,523
Average Recorded Investment With an allowance recorded	387,905	42,028	237,724
Interest Income Recognized With no related allowance recorded	0	0	0
Interest Income Recognized With an allowance recorded	0	0	0
Commercial Real Estate
Recorded Investment With no related allowance recorded	2,307,560	1,260,762	2,041,101
Recorded Investment With an allowance recorded	1,151,655	210,941	1,628,159
Unpaid Principal Balance With no related allowance recorded	2,658,965	1,276,902	2,246,905
Unpaid Principal Balance With an allowance recorded	1,167,055	210,941	1,653,646
Related Allowance With an allowance recorded	15,100	6,100	57,500
Average Recorded Investment With no related allowance recorded	2,112,726	480,280	960,407
Average Recorded Investment With an allowance recorded	1,471,201	833,777	1,128,795
Interest Income Recognized With no related allowance recorded	0	0	0
Interest Income Recognized With an allowance recorded	0	0	0
Residential real estate - 1st lien
Recorded Investment With no related allowance recorded	701,424		1,000,819
Recorded Investment With an allowance recorded	644,300		1,365,507
Unpaid Principal Balance With no related allowance recorded	924,758		1,191,437
Unpaid Principal Balance With an allowance recorded	683,961		1,869,338
Related Allowance With an allowance recorded	144,300		283,200
Average Recorded Investment With no related allowance recorded	847,776		1,210,137
Average Recorded Investment With an allowance recorded	1,161,093		1,629,151
Interest Income Recognized With no related allowance recorded	0		0
Interest Income Recognized With an allowance recorded	0		0
Residential real estate - Jr lien
Recorded Investment With no related allowance recorded	31,532		125,786
Recorded Investment With an allowance recorded	270,264		308,878
Unpaid Principal Balance With no related allowance recorded	36,024		185,142
Unpaid Principal Balance With an allowance recorded	284,776		321,475
Related Allowance With an allowance recorded	21,000		47,200
Average Recorded Investment With no related allowance recorded	52,439		25,157
Average Recorded Investment With an allowance recorded	295,016		61,776
Interest Income Recognized With no related allowance recorded	0		0
Interest Income Recognized With an allowance recorded	0		0
Residential Real Estate
Recorded Investment With no related allowance recorded		865,299
Recorded Investment With an allowance recorded		1,779,414
Unpaid Principal Balance With no related allowance recorded		1,058,921
Unpaid Principal Balance With an allowance recorded		2,176,749
Related Allowance With an allowance recorded		366,300
Average Recorded Investment With no related allowance recorded		1,323,348
Average Recorded Investment With an allowance recorded		1,655,730
Interest Income Recognized With no related allowance recorded		0
Interest Income Recognized With an allowance recorded		$ 0