NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Impaired Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Automobile Loan
Impaired Financing Receivable, Recorded Investment	$ 2,740	$ 1,632	$ 2,740	$ 1,632	$ 2,097
Impaired Financing Receivable, Unpaid Principal Balance	2,936	1,751	2,936	1,751	2,178
Impaired Financing Receivable, Related Allowance	491	245	491	245	629
Impaired Financing Receivable, Average Recorded Investment	2,548	1,434	2,323	1,123	1,307
Impaired Financing Receivable Interest Income Recognized	79	55	156	93	141
One-to-Four-Family Residential Construction
Impaired Financing Receivable, Recorded Investment	0	0	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance	0	0	0	0	0
Impaired Financing Receivable, Related Allowance	0	0	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	258	0	0
Impaired Financing Receivable Interest Income Recognized	0	0	0	0	0
Subdivision Construction
Impaired Financing Receivable, Recorded Investment	434	851	434	851	818
Impaired Financing Receivable, Unpaid Principal Balance	450	860	450	860	829
Impaired Financing Receivable, Related Allowance	116	133	116	133	131
Impaired Financing Receivable, Average Recorded Investment	444	924	652	987	948
Impaired Financing Receivable Interest Income Recognized	9	6	21	36	46
Land Development
Impaired Financing Receivable, Recorded Investment	315	9,051	315	9,051	6,023
Impaired Financing Receivable, Unpaid Principal Balance	319	9,146	319	9,146	6,120
Impaired Financing Receivable, Related Allowance	0	1,079	0	1,079	1,291
Impaired Financing Receivable, Average Recorded Investment	424	9,066	2,319	8,016	8,020
Impaired Financing Receivable Interest Income Recognized	12	120	33	266	304
Commercial Construction
Impaired Financing Receivable, Recorded Investment	0	0	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance	0	0	0	0	0
Impaired Financing Receivable, Related Allowance	0	0	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	0	0	0
Impaired Financing Receivable Interest Income Recognized	0	0	0	0	0
Owner Occupied One-to-Four-Family Residential
Impaired Financing Receivable, Recorded Investment	3,441	3,170	3,441	3,170	3,290
Impaired Financing Receivable, Unpaid Principal Balance	3,740	3,450	3,740	3,450	3,555
Impaired Financing Receivable, Related Allowance	351	382	351	382	374
Impaired Financing Receivable, Average Recorded Investment	3,440	3,181	3,384	3,252	3,267
Impaired Financing Receivable Interest Income Recognized	44	50	124	129	182
Non-Owner Occupied One To Four Family Residential
Impaired Financing Receivable, Recorded Investment	3,293	1,865	3,293	1,865	1,907
Impaired Financing Receivable, Unpaid Principal Balance	3,560	2,119	3,560	2,119	2,177
Impaired Financing Receivable, Related Allowance	104	51	104	51	65
Impaired Financing Receivable, Average Recorded Investment	2,550	1,947	2,183	1,877	1,886
Impaired Financing Receivable Interest Income Recognized	80	31	128	83	113
Commercial Real Estate
Impaired Financing Receivable, Recorded Investment	9,358	13,369	9,358	13,369	10,507
Impaired Financing Receivable, Unpaid Principal Balance	9,581	16,269	9,581	16,269	12,121
Impaired Financing Receivable, Related Allowance	599	2,280	599	2,280	2,209
Impaired Financing Receivable, Average Recorded Investment	6,819	22,325	9,068	28,133	23,928
Impaired Financing Receivable Interest Income Recognized	266	223	425	847	984
Other Residential
Impaired Financing Receivable, Recorded Investment	3,390	3,977	3,390	3,977	3,812
Impaired Financing Receivable, Unpaid Principal Balance	3,390	3,977	3,390	3,977	3,812
Impaired Financing Receivable, Related Allowance	0	0	0	0	0
Impaired Financing Receivable, Average Recorded Investment	3,457	6,321	3,660	7,779	6,813
Impaired Financing Receivable Interest Income Recognized	27	44	102	219	258
Commercial Business
Impaired Financing Receivable, Recorded Investment	3,141	2,326	3,141	2,326	4,539
Impaired Financing Receivable, Unpaid Principal Balance	4,311	2,438	4,311	2,438	4,652
Impaired Financing Receivable, Related Allowance	2,396	1,046	2,396	1,046	1,295
Impaired Financing Receivable, Average Recorded Investment	5,580	2,190	6,148	2,174	2,542
Impaired Financing Receivable Interest Income Recognized	35	39	161	87	185
Industrial Revenue Bonds
Impaired Financing Receivable, Recorded Investment	0	0	0	0	0
Impaired Financing Receivable, Unpaid Principal Balance	0	0	0	0	0
Impaired Financing Receivable, Related Allowance	0	0	0	0	0
Impaired Financing Receivable, Average Recorded Investment	0	0	0	0	0
Impaired Financing Receivable Interest Income Recognized	0	0	0	0	0
Consumer Loan
Impaired Financing Receivable, Recorded Investment	1,042	886	1,042	886	812
Impaired Financing Receivable, Unpaid Principal Balance	1,148	959	1,148	959	887
Impaired Financing Receivable, Related Allowance	156	133	156	133	244
Impaired Financing Receivable, Average Recorded Investment	1,005	864	886	876	884
Impaired Financing Receivable Interest Income Recognized	26	27	65	56	70
Home Equity Line of Credit
Impaired Financing Receivable, Recorded Investment	647	383	647	383	476
Impaired Financing Receivable, Unpaid Principal Balance	725	396	725	396	492
Impaired Financing Receivable, Related Allowance	100	63	100	63	124
Impaired Financing Receivable, Average Recorded Investment	633	395	456	422	417
Impaired Financing Receivable Interest Income Recognized	14	3	32	22	32
Loans Receivable
Impaired Financing Receivable, Recorded Investment	27,801	37,510	27,801	37,510	34,281
Impaired Financing Receivable, Unpaid Principal Balance	30,160	41,365	30,160	41,365	36,823
Impaired Financing Receivable, Related Allowance	4,313	5,412	4,313	5,412	6,362
Impaired Financing Receivable, Average Recorded Investment	26,900	48,647	31,337	54,639	50,012
Impaired Financing Receivable Interest Income Recognized	$ 592	$ 598	$ 1,247	$ 1,838	$ 2,315