NOTE 7: ACQUIRED LOANS, LOSS SHARING AGREEMENTS AND FDIC INDEMNIFICATION ASSETS: Schedule of Accretable Yield Changes for Acquired Loans (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016
TeamBank
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	$ (352)		$ (461)		$ (1,319)		$ (1,492)
Change in expected accretable yield	287	[1]	301	[1]	1,080	[2]	413	[2]
TeamBank | Beginning of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	2,303		2,886		2,477		3,805
TeamBank | End of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	2,238		2,726		2,238		2,726
Vantus Bank
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	(310)		(415)		(1,048)		(1,406)
Change in expected accretable yield	211	[1]	(72)	[1]	582	[2]	776	[2]
Vantus Bank | Beginning of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	2,180		3,217		2,547		3,360
Vantus Bank | End of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	2,081		2,730		2,081		2,730
Sun Security Bank
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	(561)		(854)		(1,757)		(2,904)
Change in expected accretable yield	(270)	[1]	587	[1]	335	[2]	1,727	[2]
Sun Security Bank | Beginning of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	3,686		5,014		4,277		5,924
Sun Security Bank | End of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	2,855		4,747		2,855		4,747
InterBank
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	(1,688)		(3,163)		(5,850)		(11,279)
Change in expected accretable yield	625	[1]	1,454	[1]	1,689	[2]	5,041	[2]
InterBank | Beginning of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	5,414		11,818		8,512		16,347
InterBank | End of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	4,351		10,109		4,351		10,109
Valley Bank
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	(1,378)		(3,311)		(4,772)		(9,174)
Change in expected accretable yield	889	[1]	2,838	[1]	2,799	[2]	6,909	[2]
Valley Bank | Beginning of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	3,313		6,524		4,797		8,316
Valley Bank | End of Period
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Period Increase (Decrease)	$ 2,824		$ 6,051		$ 2,824		$ 6,051

[1] Represents increases in estimated cash flows expected to be received from the acquired loan pools, partially due to lower estimated credit losses. The amounts also include changes in expected accretion of the loan pools for TeamBank, Vantus Bank, Sun Security Bank, InterBank and Valley Bank for the three months ended September 30, 2017, totaling $268,000, $204,000, $(270,000), $625,000 and $444,000, respectively, and for the three months ended September 30, 2016, totaling $301,000, $(87,000), $373,000, $764,000 and $326,000, respectively.

[2] Represents increases in estimated cash flows expected to be received from the acquired loan pools, partially due to lower estimated credit losses. The amounts also include changes in expected accretion of the loan pools for TeamBank, Vantus Bank, Sun Security Bank, InterBank and Valley Bank for the nine months ended September 30, 2017, totaling $1.1 million, $569,000, $335,000, $1.7 million and $2.2 million, respectively, and for the nine months ended September 30, 2016, totaling $414,000, $760,000, $1.3 million, $2.0 million and $1.4 million, respectively.