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Note 3: Securities (Detail) - Amortized Cost and Approximate Fair Value of Held to Maturity Securities (USD $)
Sep. 30, 2012
Dec. 31, 2011
Debt Securities:    
Securities Amortized Cost $ 189,278 $ 218,571
Securities Gross Unrealized Gains 13,521 17,003
Securities Approximate Fair Value 202,799 235,574
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
   
Debt Securities:    
Securities Amortized Cost 189,278 218,571
Securities Gross Unrealized Gains 13,521 17,003
Securities Approximate Fair Value $ 202,799 $ 235,574