Note 8: Loss Sharing Agreements and FDIC Indemnification Assets: Vantus Bank Business Combination Policy (Details) (Vantus Bank, USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Vantus Bank
Acquired Loans and Amount Accreted to Yield	$ 76,000	$ 217,000	$ 338,000	$ 740,000