Note 6. Loans (Detail) - The Recorded Investment in Nonaccrual Loans and Loans Past Due Ninety Days or More and Still Accruing by Class of Loans (USD $)	Jun. 30, 2012	Dec. 31, 2011
Nonaccrual	$ 28,659,069	$ 26,935,328
Past due 90 days or more and accruing	996,333	2,375,862
Commercial Portfolio Segment [Member]
Nonaccrual	234,569	393,391
Past due 90 days or more and accruing		47,156
Construction Portfolio Segment [Member]
Nonaccrual	2,006,330	1,101,343
Past due 90 days or more and accruing	45,000	732,911
Commercial Real Estate Portfolio Segment [Member]
Nonaccrual	7,484,083	7,455,567
Past due 90 days or more and accruing	457,808	426,242
Residential Portfolio Segment [Member]
Nonaccrual	17,506,881	15,931,722
Past due 90 days or more and accruing	144,102	757,514
Multifamily Portfolio Segment [Member]
Nonaccrual	1,274,999	1,990,563
Installment and Other Loans [Member]
Nonaccrual	152,207	62,742
Past due 90 days or more and accruing	349,423	412,039
Commercial Portfolio Segment [Member]
Nonaccrual	(428)	(2,919)
Past due 90 days or more and accruing		(12,749)
Commercial Real Estate Portfolio Segment [Member]
Nonaccrual	(1,509,808)	(1,602,816)
Residential Portfolio Segment [Member]
Nonaccrual	(4,420,108)	(4,671,780)
Past due 90 days or more and accruing	(29,861)	(12,914)
Multifamily Portfolio Segment [Member]
Nonaccrual		(603,395)
Purchase Credit Impaired Loans [Member]
Nonaccrual	(5,930,344)	(6,880,910)
Past due 90 days or more and accruing	(29,861)	(25,663)
Total Excluding Purchase Credit Impaired Loans [Member]
Nonaccrual	22,728,725	20,054,418
Past due 90 days or more and accruing	$ 966,472	$ 2,350,199