NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Schedule of Loans Classified by Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivables, 30 to 59 Days Past Due | Automobile Loan
Financing Receivables, By Class	$ 2,705	$ 5,196
Financing Receivables, 30 to 59 Days Past Due | One-to-Four-Family Residential Construction
Financing Receivables, By Class	0	250
Financing Receivables, 30 to 59 Days Past Due | Subdivision Construction
Financing Receivables, By Class	12	0
Financing Receivables, 30 to 59 Days Past Due | Land Development
Financing Receivables, By Class	0	54
Financing Receivables, 30 to 59 Days Past Due | Commercial Construction
Financing Receivables, By Class	0	0
Financing Receivables, 30 to 59 Days Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	138	1,927
Financing Receivables, 30 to 59 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	0	947
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivables, By Class	327	8,346
Financing Receivables, 30 to 59 Days Past Due | Other Residential
Financing Receivables, By Class	0	540
Financing Receivables, 30 to 59 Days Past Due | Commercial Business
Financing Receivables, By Class	129	2,623
Financing Receivables, 30 to 59 Days Past Due | Industrial Revenue Bonds
Financing Receivables, By Class	0	0
Financing Receivables, 30 to 59 Days Past Due | Consumer Loan
Financing Receivables, By Class	473	464
Financing Receivables, 30 to 59 Days Past Due | Home Equity Line of Credit
Financing Receivables, By Class	353	58
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans Net of Discount
Financing Receivables, By Class	1,780	4,449
Financing Receivables, 30 to 59 Days Past Due | Loans Receivable, Gross
Financing Receivables, By Class	5,917	24,854
Financing Receivables, 30 to 59 Days Past Due | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	1,780	4,449
Financing Receivables, 30 to 59 Days Past Due | Loans Receivable
Financing Receivables, By Class	4,137	20,405
Financing Receivables, 60 to 89 Days Past Due | Automobile Loan
Financing Receivables, By Class	858	1,230
Financing Receivables, 60 to 89 Days Past Due | One-to-Four-Family Residential Construction
Financing Receivables, By Class	294	0
Financing Receivables, 60 to 89 Days Past Due | Subdivision Construction
Financing Receivables, By Class	0	0
Financing Receivables, 60 to 89 Days Past Due | Land Development
Financing Receivables, By Class	32	37
Financing Receivables, 60 to 89 Days Past Due | Commercial Construction
Financing Receivables, By Class	0	0
Financing Receivables, 60 to 89 Days Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	62	71
Financing Receivables, 60 to 89 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	0	190
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivables, By Class	38	993
Financing Receivables, 60 to 89 Days Past Due | Other Residential
Financing Receivables, By Class	0	353
Financing Receivables, 60 to 89 Days Past Due | Commercial Business
Financing Receivables, By Class	0	1,282
Financing Receivables, 60 to 89 Days Past Due | Industrial Revenue Bonds
Financing Receivables, By Class	0	0
Financing Receivables, 60 to 89 Days Past Due | Consumer Loan
Financing Receivables, By Class	220	64
Financing Receivables, 60 to 89 Days Past Due | Home Equity Line of Credit
Financing Receivables, By Class	0	0
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans Net of Discount
Financing Receivables, By Class	1,442	1,951
Financing Receivables, 60 to 89 Days Past Due | Loans Receivable, Gross
Financing Receivables, By Class	2,946	6,171
Financing Receivables, 60 to 89 Days Past Due | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	1,442	1,951
Financing Receivables, 60 to 89 Days Past Due | Loans Receivable
Financing Receivables, By Class	1,504	4,220
Financing Receivables, Equal to Greater than 90 Days Past Due | Automobile Loan
Financing Receivables, By Class	1,367	2,284
Financing Receivables, Equal to Greater than 90 Days Past Due | One-to-Four-Family Residential Construction
Financing Receivables, By Class	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Subdivision Construction
Financing Receivables, By Class	0	98
Financing Receivables, Equal to Greater than 90 Days Past Due | Land Development
Financing Receivables, By Class	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Construction
Financing Receivables, By Class	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	1,270	904
Financing Receivables, Equal to Greater than 90 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	1,481	1,816
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivables, By Class	346	1,226
Financing Receivables, Equal to Greater than 90 Days Past Due | Other Residential
Financing Receivables, By Class	0	1,877
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Business
Financing Receivables, By Class	1,590	2,063
Financing Receivables, Equal to Greater than 90 Days Past Due | Industrial Revenue Bonds
Financing Receivables, By Class	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer Loan
Financing Receivables, By Class	326	557
Financing Receivables, Equal to Greater than 90 Days Past Due | Home Equity Line of Credit
Financing Receivables, By Class	95	430
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans Net of Discount
Financing Receivables, By Class	2,385	10,675
Financing Receivables, Equal to Greater than 90 Days Past Due | Loans Receivable, Gross
Financing Receivables, By Class	8,860	21,930
Financing Receivables, Equal to Greater than 90 Days Past Due | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	2,385	10,675
Financing Receivables, Equal to Greater than 90 Days Past Due | Loans Receivable
Financing Receivables, By Class	6,475	11,255
Financing Receivables Past Due | Automobile Loan
Financing Receivables, By Class	4,930	8,710
Financing Receivables Past Due | One-to-Four-Family Residential Construction
Financing Receivables, By Class	294	250
Financing Receivables Past Due | Subdivision Construction
Financing Receivables, By Class	12	98
Financing Receivables Past Due | Land Development
Financing Receivables, By Class	32	91
Financing Receivables Past Due | Commercial Construction
Financing Receivables, By Class	0	0
Financing Receivables Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	1,470	2,902
Financing Receivables Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	1,481	2,953
Financing Receivables Past Due | Commercial Real Estate
Financing Receivables, By Class	711	10,565
Financing Receivables Past Due | Other Residential
Financing Receivables, By Class	0	2,770
Financing Receivables Past Due | Commercial Business
Financing Receivables, By Class	1,719	5,968
Financing Receivables Past Due | Industrial Revenue Bonds
Financing Receivables, By Class	0	0
Financing Receivables Past Due | Consumer Loan
Financing Receivables, By Class	1,019	1,085
Financing Receivables Past Due | Home Equity Line of Credit
Financing Receivables, By Class	448	488
Financing Receivables Past Due | Acquired Loans Net of Discount
Financing Receivables, By Class	5,607	17,075
Financing Receivables Past Due | Loans Receivable, Gross
Financing Receivables, By Class	17,723	52,955
Financing Receivables Past Due | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	5,607	17,075
Financing Receivables Past Due | Loans Receivable
Financing Receivables, By Class	12,116	35,880
Financing Receivables Current | Automobile Loan
Financing Receivables, By Class	272,954	348,432
Financing Receivables Current | One-to-Four-Family Residential Construction
Financing Receivables, By Class	25,183	20,543
Financing Receivables Current | Subdivision Construction
Financing Receivables, By Class	16,042	17,964
Financing Receivables Current | Land Development
Financing Receivables, By Class	44,470	43,880
Financing Receivables Current | Commercial Construction
Financing Receivables, By Class	1,283,468	1,068,352
Financing Receivables Current | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	254,524	187,613
Financing Receivables Current | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	107,801	116,515
Financing Receivables Current | Commercial Real Estate
Financing Receivables, By Class	1,383,160	1,224,764
Financing Receivables Current | Other Residential
Financing Receivables, By Class	791,786	742,875
Financing Receivables Current | Commercial Business
Financing Receivables, By Class	330,318	347,383
Financing Receivables Current | Industrial Revenue Bonds
Financing Receivables, By Class	14,179	21,859
Financing Receivables Current | Consumer Loan
Financing Receivables, By Class	56,902	62,283
Financing Receivables Current | Home Equity Line of Credit
Financing Receivables, By Class	116,613	114,951
Financing Receivables Current | Acquired Loans Net of Discount
Financing Receivables, By Class	171,543	192,594
Financing Receivables Current | Loans Receivable, Gross
Financing Receivables, By Class	4,868,943	4,510,008
Financing Receivables Current | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	171,543	192,594
Financing Receivables Current | Loans Receivable
Financing Receivables, By Class	4,697,400	4,317,414
Financing Receivables, Total | Automobile Loan
Financing Receivables, By Class	277,884	357,142
Financing Receivables, Total | One-to-Four-Family Residential Construction
Financing Receivables, By Class	25,477	20,793
Financing Receivables, Total | Subdivision Construction
Financing Receivables, By Class	16,054	18,062
Financing Receivables, Total | Land Development
Financing Receivables, By Class	44,502	43,971
Financing Receivables, Total | Commercial Construction
Financing Receivables, By Class	1,283,468	1,068,352
Financing Receivables, Total | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	255,994	190,515
Financing Receivables, Total | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	109,282	119,468
Financing Receivables, Total | Commercial Real Estate
Financing Receivables, By Class	1,383,871	1,235,329
Financing Receivables, Total | Other Residential
Financing Receivables, By Class	791,786	745,645
Financing Receivables, Total | Commercial Business
Financing Receivables, By Class	332,037	353,351
Financing Receivables, Total | Industrial Revenue Bonds
Financing Receivables, By Class	14,179	21,859
Financing Receivables, Total | Consumer Loan
Financing Receivables, By Class	57,921	63,368
Financing Receivables, Total | Home Equity Line of Credit
Financing Receivables, By Class	117,061	115,439
Financing Receivables, Total | Acquired Loans Net of Discount
Financing Receivables, By Class	177,150	209,669
Financing Receivables, Total | Loans Receivable, Gross
Financing Receivables, By Class	4,886,666	4,562,963
Financing Receivables, Total | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	177,150	209,669
Financing Receivables, Total | Loans Receivable
Financing Receivables, By Class	4,709,516	4,353,294
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Automobile Loan
Financing Receivables, By Class	0	12
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | One-to-Four-Family Residential Construction
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Subdivision Construction
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Land Development
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Commercial Construction
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	0	58
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Commercial Real Estate
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Other Residential
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Commercial Business
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Industrial Revenue Bonds
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Consumer Loan
Financing Receivables, By Class	0	0
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Home Equity Line of Credit
Financing Receivables, By Class	0	26
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Acquired Loans Net of Discount
Financing Receivables, By Class	0	272
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Loans Receivable, Gross
Financing Receivables, By Class	0	368
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Less: Acquired Loans Net of Discount
Financing Receivables, By Class	0	272
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Loans Receivable
Financing Receivables, By Class	$ 0	$ 96