Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: Business Combinations Policy: Business Acquisition, Sun Security Bank Assets Acquired and Liabilities Assumed (Details) - Sun Security Bank - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Oct. 07, 2011
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				$ 163,700
Business Combination, Indemnification Assets, Amount as of Acquisition Date				$ 67,400
Discount Recorded in Conjunction with Fair Value of Acquired Loans and Amount Accreted to Yield	$ 0	$ 105	$ 974