Note 5. Held to Maturity Securities (Detail) - Amortized Cost and Fair Value of Held-to-Maturity Securities (USD $)	Jun. 30, 2012
Due in one year or less	$ 54,374,594
Due in one year or less	54,602,091
Due after one year less than 5 years	170,073,142
Due after one year less than 5 years	172,241,921
Due after 5 years less than 10 years	101,389,161
Due after 5 years less than 10 years	102,999,254
Due in more than 10 years	10,000,000
Due in more than 10 years	10,042,000
Totals	335,836,897
Totals	$ 339,885,266