Note 4: Loans and Allowance for Loan Losses (Detail) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Allowance for Credit Losses, Change in Method of Calculating Impairment	$ 511,023	$ 1,300,000
Residential Mortgage [Member]
Financing Receivable, Modifications, Number of Contracts	2
Financing Receivable, Modifications, Recorded Investment	390,898
Real Estate Construction [Member]
Financing Receivable, Modifications, Recorded Investment	7,600,000
Commercial Real Estate [Member]
Financing Receivable, Modifications, Recorded Investment	$ 1,900,000