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NOTE 7: ACQUIRED LOANS, LOSS SHARING AGREEMENTS AND FDIC INDEMNIFICATION ASSETS: Business Acquisition Fair Value and Expected Cash Flows Policy (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Accretable yield adjustment affecting interest income $ 4,200   $ 4,200  
Remaining accretable yield adjustment affecting interest income     2,200  
Minimum        
Reclassification of discounts from non-accretable to accretable (adjustment) 0 $ 0 0 $ 0
Maximum        
Reclassification of discounts from non-accretable to accretable (adjustment) $ 3,700 $ 3,700 $ 5,300 $ 5,300