Note 6: Loans and Allowance For Loan Losses: Schedule of Loans Classified by Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivables, 30 to 59 Days Past Due
Financing Receivables, By Class	$ 16,372
Financing Receivables, 30 to 59 Days Past Due | Consumer Loan
Financing Receivables, By Class	433	$ 1,103
Financing Receivables, 30 to 59 Days Past Due | Automobile Loan
Financing Receivables, By Class	3,909	8,252
Financing Receivables, 30 to 59 Days Past Due | Land Development
Financing Receivables, By Class	575	413
Financing Receivables, 30 to 59 Days Past Due | Commercial Construction
Financing Receivables, By Class	235
Financing Receivables, 30 to 59 Days Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	1,276	1,760
Financing Receivables, 30 to 59 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	6	309
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivables, By Class	2,442	1,969
Financing Receivables, 30 to 59 Days Past Due | Other Residential
Financing Receivables, By Class	117	4,632
Financing Receivables, 30 to 59 Days Past Due | Commercial Business
Financing Receivables, By Class	243	1,741
Financing Receivables, 30 to 59 Days Past Due | Home Equity Line of Credit
Financing Receivables, By Class	261	136
Financing Receivables, 30 to 59 Days Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class	5,621	4,476
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	881	1,356
Financing Receivables, 30 to 59 Days Past Due | Acquired Non-Covered Loans Net of Discounts
Financing Receivables, By Class	373	851
Financing Receivables, 30 to 59 Days Past Due | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	6,875	6,683
Financing Receivables, 30 to 59 Days Past Due | Loans Receivable
Financing Receivables, By Class	9,497	20,315
Financing Receivables, 30 to 59 Days Past Due | Loans Receivable, Gross
Financing Receivables, By Class		26,998
Financing Receivables, 60 to 89 Days Past Due
Financing Receivables, By Class	8,035
Financing Receivables, 60 to 89 Days Past Due | Consumer Loan
Financing Receivables, By Class	107	278
Financing Receivables, 60 to 89 Days Past Due | Automobile Loan
Financing Receivables, By Class	947	2,451
Financing Receivables, 60 to 89 Days Past Due | Land Development
Financing Receivables, By Class		584
Financing Receivables, 60 to 89 Days Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class		388
Financing Receivables, 60 to 89 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class		278
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivables, By Class	6,376	1,988
Financing Receivables, 60 to 89 Days Past Due | Commercial Business
Financing Receivables, By Class	88	24
Financing Receivables, 60 to 89 Days Past Due | Home Equity Line of Credit
Financing Receivables, By Class	50	158
Financing Receivables, 60 to 89 Days Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class	161	1,201
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	184	552
Financing Receivables, 60 to 89 Days Past Due | Acquired Non-Covered Loans Net of Discounts
Financing Receivables, By Class	122	173
Financing Receivables, 60 to 89 Days Past Due | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	467	1,926
Financing Receivables, 60 to 89 Days Past Due | Loans Receivable
Financing Receivables, By Class	7,568	6,149
Financing Receivables, 60 to 89 Days Past Due | Loans Receivable, Gross
Financing Receivables, By Class		8,075
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivables, By Class	25,403
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer Loan
Financing Receivables, By Class	610	649
Financing Receivables, Equal to Greater than 90 Days Past Due | Automobile Loan
Financing Receivables, By Class	1,934	1,989
Financing Receivables, Equal to Greater than 90 Days Past Due | One-to-Four-Family Residential Construction
Financing Receivables, By Class	381
Financing Receivables, Equal to Greater than 90 Days Past Due | Subdivision Construction
Financing Receivables, By Class	107	109
Financing Receivables, Equal to Greater than 90 Days Past Due | Land Development
Financing Receivables, By Class	3,919	1,718
Financing Receivables, Equal to Greater than 90 Days Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	1,019	1,125
Financing Receivables, Equal to Greater than 90 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	388	404
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivables, By Class	2,914	4,404
Financing Receivables, Equal to Greater than 90 Days Past Due | Other Residential
Financing Receivables, By Class	164	162
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Business
Financing Receivables, By Class	4,351	3,088
Financing Receivables, Equal to Greater than 90 Days Past Due | Home Equity Line of Credit
Financing Receivables, By Class	287	433
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class	6,392	8,226
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	1,088	1,401
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Non-Covered Loans Net of Discounts
Financing Receivables, By Class	1,849	2,854
Financing Receivables, Equal to Greater than 90 Days Past Due | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	9,329	12,481
Financing Receivables, Equal to Greater than 90 Days Past Due | Loans Receivable
Financing Receivables, By Class	16,074	14,081
Financing Receivables, Equal to Greater than 90 Days Past Due | Loans Receivable, Gross
Financing Receivables, By Class		26,562
Financing Receivables Past Due
Financing Receivables, By Class	49,810
Financing Receivables Past Due | Consumer Loan
Financing Receivables, By Class	1,150	2,030
Financing Receivables Past Due | Automobile Loan
Financing Receivables, By Class	6,790	12,692
Financing Receivables Past Due | One-to-Four-Family Residential Construction
Financing Receivables, By Class	381
Financing Receivables Past Due | Subdivision Construction
Financing Receivables, By Class	107	109
Financing Receivables Past Due | Land Development
Financing Receivables, By Class	4,494	2,715
Financing Receivables Past Due | Commercial Construction
Financing Receivables, By Class	235
Financing Receivables Past Due | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	2,295	3,273
Financing Receivables Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	394	991
Financing Receivables Past Due | Commercial Real Estate
Financing Receivables, By Class	11,732	8,361
Financing Receivables Past Due | Other Residential
Financing Receivables, By Class	281	4,794
Financing Receivables Past Due | Commercial Business
Financing Receivables, By Class	4,682	4,853
Financing Receivables Past Due | Home Equity Line of Credit
Financing Receivables, By Class	598	727
Financing Receivables Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class	12,174	13,903
Financing Receivables Past Due | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	2,153	3,309
Financing Receivables Past Due | Acquired Non-Covered Loans Net of Discounts
Financing Receivables, By Class	2,344	3,878
Financing Receivables Past Due | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	16,671	21,090
Financing Receivables Past Due | Loans Receivable
Financing Receivables, By Class	33,139	40,545
Financing Receivables Past Due | Loans Receivable, Gross
Financing Receivables, By Class		61,635
Financing Receivables Current
Financing Receivables, By Class	4,351,890
Financing Receivables Current | Consumer Loan
Financing Receivables, By Class	64,918	67,971
Financing Receivables Current | Automobile Loan
Financing Receivables, By Class	456,225	481,541
Financing Receivables Current | One-to-Four-Family Residential Construction
Financing Receivables, By Class	23,493	21,737
Financing Receivables Current | Subdivision Construction
Financing Receivables, By Class	17,923	17,077
Financing Receivables Current | Land Development
Financing Receivables, By Class	47,951	47,909
Financing Receivables Current | Commercial Construction
Financing Receivables, By Class	827,482	780,614
Financing Receivables Current | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	187,170	197,067
Financing Receivables Current | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	130,704	135,933
Financing Receivables Current | Commercial Real Estate
Financing Receivables, By Class	1,214,551	1,178,545
Financing Receivables Current | Other Residential
Financing Receivables, By Class	668,716	658,584
Financing Receivables Current | Commercial Business
Financing Receivables, By Class	339,421	343,775
Financing Receivables Current | Industrial Revenue Bonds
Financing Receivables, By Class	24,411	25,065
Financing Receivables Current | Home Equity Line of Credit
Financing Receivables, By Class	106,565	108,026
Financing Receivables Current | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class	111,728	120,453
Financing Receivables Current | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	64,970	69,260
Financing Receivables Current | Acquired Non-Covered Loans Net of Discounts
Financing Receivables, By Class	65,662	72,356
Financing Receivables Current | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	242,360	262,069
Financing Receivables Current | Loans Receivable
Financing Receivables, By Class	4,109,530	4,063,844
Financing Receivables Current | Loans Receivable, Gross
Financing Receivables, By Class		4,325,913
Financing Receivables, Total
Financing Receivables, By Class	4,401,700
Financing Receivables, Total | Consumer Loan
Financing Receivables, By Class	66,068	70,001
Financing Receivables, Total | Automobile Loan
Financing Receivables, By Class	463,015	494,233
Financing Receivables, Total | One-to-Four-Family Residential Construction
Financing Receivables, By Class	23,874	21,737
Financing Receivables, Total | Subdivision Construction
Financing Receivables, By Class	18,030	17,186
Financing Receivables, Total | Land Development
Financing Receivables, By Class	52,445	50,624
Financing Receivables, Total | Commercial Construction
Financing Receivables, By Class	827,717	780,614
Financing Receivables, Total | Owner Occupied One-to-Four-Family Residential
Financing Receivables, By Class	189,465	200,340
Financing Receivables, Total | Non-Owner Occupied One To Four Family Residential
Financing Receivables, By Class	131,098	136,924
Financing Receivables, Total | Commercial Real Estate
Financing Receivables, By Class	1,226,283	1,186,906
Financing Receivables, Total | Other Residential
Financing Receivables, By Class	668,997	663,378
Financing Receivables, Total | Commercial Business
Financing Receivables, By Class	344,103	348,628
Financing Receivables, Total | Industrial Revenue Bonds
Financing Receivables, By Class	24,411	25,065
Financing Receivables, Total | Home Equity Line of Credit
Financing Receivables, By Class	107,163	108,753
Financing Receivables, Total | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class	123,902	134,356
Financing Receivables, Total | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	67,123	72,569
Financing Receivables, Total | Acquired Non-Covered Loans Net of Discounts
Financing Receivables, By Class	68,006	76,234
Financing Receivables, Total | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	259,031	283,159
Financing Receivables, Total | Loans Receivable
Financing Receivables, By Class	4,142,669	4,104,389
Financing Receivables, Total | Loans Receivable, Gross
Financing Receivables, By Class		4,387,548
Financing Receivables Greater Than 90 Days Past Due and Still Accruing
Financing Receivables, By Class	354
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Commercial Real Estate
Financing Receivables, By Class	306
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Home Equity Line of Credit
Financing Receivables, By Class	5
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Acquired FDIC Covered Loans Net of Discount
Financing Receivables, By Class		301
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Financing Receivables, By Class	43	222
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Less FDIC Supported Loans and Acquired Not Covered Loans Net Of Discounts
Financing Receivables, By Class	43	523
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Loans Receivable
Financing Receivables, By Class	$ 311
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Loans Receivable, Gross
Financing Receivables, By Class		$ 523