Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: Sun Security Bank Acquisition Policy: Business Acquisition, Sun Security Bank Other Assets Acquired (Details) (Sun Security Bank, USD $)	Oct. 07, 2011
Business Acquisition, Other Assets Acquired	$ 85,200,000
Business Acquisition, Liabilities Assumed	345,800,000
Core Deposit Intangible Asset	2,500,000
Cash Received from Federal Deposit Insurance Corporation	40,800,000
Securities Investment
Business Acquisition, Other Assets Acquired	45,300,000
Cash and Cash Equivalents
Business Acquisition, Other Assets Acquired	26,100,000
Foreclosed assets
Business Acquisition, Other Assets Acquired	9,100,000
Investment in Federal Home Loan Bank Stock
Business Acquisition, Other Assets Acquired	3,000,000
Other Assets
Business Acquisition, Other Assets Acquired	1,800,000
Deposits
Business Acquisition, Liabilities Assumed	280,900,000
Federal Home Loan Bank Advances
Business Acquisition, Liabilities Assumed	64,300,000
Other Liabilities
Business Acquisition, Liabilities Assumed	$ 632,000