Note 4: Acquired Loans, Loss Sharing Agreements and FDIC Indemnification Assets: FDIC Indemnification Asset Policy: FDIC Indemnification Asset Roll Forward (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
FDIC indemnification asset	$ 0	$ 13,145
Vantus Bank Loans
Initial basis for loss sharing determination, net of activity since acquisition date	18,965	23,712
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	(131)	(239)
Original estimated fair value of assets, net of activity since acquisition date	(18,605)	(23,232)
Expected loss remaining	229	241
Vantus Bank Foreclosed Assets
Initial basis for loss sharing determination, net of activity since acquisition date	15	15
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	0	0
Original estimated fair value of assets, net of activity since acquisition date	(15)	(15)
Expected loss remaining	0	0
Sun Security Bank Loans
Initial basis for loss sharing determination, net of activity since acquisition date	26,787	33,579
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	(494)	(1,086)
Original estimated fair value of assets, net of activity since acquisition date	(25,348)	(31,499)
Expected loss remaining	945	994
Sun Security Bank Foreclosed Assets
Initial basis for loss sharing determination, net of activity since acquisition date	306	365
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	0	0
Original estimated fair value of assets, net of activity since acquisition date	(299)	(286)
Expected loss remaining	7	79
InterBank
Initial basis for loss sharing determination, net of activity since acquisition date	112,399	149,657
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	(972)	(1,984)
Original estimated fair value of assets, net of activity since acquisition date	(98,321)	(134,355)
Expected loss remaining	13,380	13,861
Non-credit premium (discount), net of activity since acquisition date	274	$ 543
Assumed loss sharing recovery percentage		84.00%
Estimated loss sharing value		$ 11,644
Indemnification assets to be amortized resulting from change in expected losses		1,586
Accretable Discount on FDIC Indemnification Asset		(1,038)
FDIC indemnification asset		13,145
InterBank Foreclosed Assets
Initial basis for loss sharing determination, net of activity since acquisition date	2,012	1,417
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	0	0
Original estimated fair value of assets, net of activity since acquisition date	(1,785)	(1,417)
Expected loss remaining	227	0
Non-credit premium (discount), net of activity since acquisition date	0	$ 0
Assumed loss sharing recovery percentage		0.00%
Estimated loss sharing value		$ 0
Indemnification assets to be amortized resulting from change in expected losses		0
Accretable Discount on FDIC Indemnification Asset		0
FDIC indemnification asset		0
Valley Bank Loans
Initial basis for loss sharing determination, net of activity since acquisition date	59,997	84,283
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	(411)	(2,121)
Original estimated fair value of assets, net of activity since acquisition date	(54,442)	(76,231)
Expected loss remaining	5,155	6,159
Non-credit premium (discount), net of activity since acquisition date	11	228
Valley Bank Foreclosed Assets
Initial basis for loss sharing determination, net of activity since acquisition date	1,673	1,973
Reclassification from nonaccretable discount to accretable discount due to change in expected losses (net of accretion to date)	0	0
Original estimated fair value of assets, net of activity since acquisition date	(1,667)	(1,952)
Expected loss remaining	6	21
Non-credit premium (discount), net of activity since acquisition date	$ 0	$ 0