Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: FDIC Indemnification Asset Roll Forward (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
TeamBank
Gross loans receivable	$ 7,304	$ 10,602
Business combination balance of accretable discount due to change in expected losses	(159)	(399)
Business combination net carrying value to loans receivable	(7,118)	(10,106)
Business combination expected loss remaining	27	97
Vantus Bank
Gross loans receivable	9,899	14,097
Business combination balance of accretable discount due to change in expected losses	(89)	(58)
Business combination net carrying value to loans receivable	(9,797)	(13,809)
Business combination expected loss remaining	13	230
Sun Security Bank
Gross loans receivable	17,906	21,171
Business combination balance of accretable discount due to change in expected losses	(374)	(342)
Business combination net carrying value to loans receivable	(17,392)	(20,171)
Business combination expected loss remaining	140	658
InterBank
Gross loans receivable	60,430	85,205
Business combination balance of accretable discount due to change in expected losses	(5,143)	(1,695)
Business combination net carrying value to loans receivable	(54,442)	(74,436)
Business combination expected loss remaining	845	9,074
Valley Bank
Gross loans receivable	41,032	53,470
Business combination balance of accretable discount due to change in expected losses	(1,803)	(169)
Business combination net carrying value to loans receivable	(38,452)	(49,124)
Business combination expected loss remaining	$ 777	$ 4,177