Note 7: FDIC Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: FDIC Indemnification Asset Policy (Details)	3 Months Ended
	Mar. 31, 2016
TeamBank
Business Combination, Indemnification Assets, Description	Gross loan balances (due from the borrower) were reduced approximately $409.0 million since the transaction date because of $276.1 million of repayments from borrowers, $61.6 million in transfers to foreclosed assets and $71.3 million in charge-offs to customer loan balances.
Vantus Bank
Business Combination, Indemnification Assets, Description	Gross loan balances (due from the borrower) were reduced approximately $301.2 million since the transaction date because of $255.3 million of repayments from borrowers, $16.6 million in transfers to foreclosed assets and $29.3 million in charge-offs to customer loan balances.
Sun Security Bank
Business Combination, Indemnification Assets, Description	Gross loan balances (due from the borrower) were reduced approximately $193.7 million since the transaction date because of $133.8 million of repayments from borrowers, $28.2 million in transfers to foreclosed assets and $31.7 million of charge-offs to customer loan balances.
InterBank
Business Combination, Indemnification Assets, Description	Gross loan balances (due from the borrower) were reduced approximately $210.0 million since the transaction date because of $173.3 million of repayments by the borrower, $15.1 million in transfers to foreclosed assets and $21.6 million of charge-offs to customer loan balances.
Valley Bank
Business Combination, Indemnification Assets, Description	Gross loan balances (due from the borrower) were reduced approximately $90.7 million since the transaction date because of $82.5 million of repayments by the borrower, $6.5 million of charge-offs to customer loan balances and $1.7 million in transfers to foreclosed assets.