Note 9. Troubled Debt Restructuring (Detail) - Summary Of Troubled Debt Restructurings (USD $)	Jun. 30, 2012	Dec. 31, 2011
Number of Modifications	139	114
Total Troubled Debt Restructurings	$ 29,625,442	$ 25,270,715
Allowance for Loan Losses Allocation	6,916,587	6,466,579
Recorded Investment	27,445,776	23,328,148
Troubled Debt Restructurings [Member] | Construction Portfolio Segment [Member]
Allowance for Loan Losses Allocation	43,815	46,081
Troubled Debt Restructurings [Member] | Commercial Real Estate Portfolio Segment [Member]
Allowance for Loan Losses Allocation	677,842	790,410
Troubled Debt Restructurings [Member] | Residential Real Estate Loans [Member]
Allowance for Loan Losses Allocation	1,215,781	923,937
Troubled Debt Restructurings [Member] | Multifamily Portfolio Segment [Member]
Allowance for Loan Losses Allocation	219,953	170,295
Troubled Debt Restructurings [Member] | Installment and Other Loans [Member]
Allowance for Loan Losses Allocation	22,275	11,844
Troubled Debt Restructurings [Member]
Allowance for Loan Losses Allocation	2,179,666	1,942,567
Construction Portfolio Segment [Member]
Number of Modifications	3	4
Total Troubled Debt Restructurings	674,351	1,291,616
Recorded Investment	630,536	1,245,535
Commercial Real Estate Portfolio Segment [Member]
Number of Modifications	22	13
Total Troubled Debt Restructurings	11,930,925	7,360,189
Recorded Investment	11,253,083	6,569,779
Residential Real Estate Loans [Member]
Number of Modifications	101	86
Total Troubled Debt Restructurings	16,229,455	15,950,281
Recorded Investment	15,013,674	15,026,344
Multifamily Portfolio Segment [Member]
Number of Modifications	2	2
Total Troubled Debt Restructurings	588,088	541,192
Recorded Investment	368,135	370,897
Installment and Other Loans [Member]
Number of Modifications	11	9
Total Troubled Debt Restructurings	202,623	127,437
Recorded Investment	$ 180,348	$ 115,593