Note 3: Loans and Allowance For Loan Losses: Classes of Loans by Aging (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivables, 30 to 59 Days Past Due | One To Four Family Residential Construction
Financing Receivables		$ 649
Financing Receivables, 30 to 59 Days Past Due | Land Development
Financing Receivables	$ 413	2,245
Financing Receivables, 30 to 59 Days Past Due | Commercial Construction
Financing Receivables		1
Financing Receivables, 30 to 59 Days Past Due | Owner Occupied One To Four Family Residential
Financing Receivables	1,760	1,217
Financing Receivables, 30 to 59 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables	309
Financing Receivables, 30 to 59 Days Past Due | Commercial Real Estate
Financing Receivables	1,969	1,035
Financing Receivables, 30 to 59 Days Past Due | Other Residential
Financing Receivables	4,632
Financing Receivables, 30 to 59 Days Past Due | Commercial Business
Financing Receivables	1,741	1,020
Financing Receivables, 30 to 59 Days Past Due | Automobile Loan
Financing Receivables	8,252	3,351
Financing Receivables, 30 to 59 Days Past Due | Consumer Loan
Financing Receivables	1,103	943
Financing Receivables, 30 to 59 Days Past Due | Home Equity Line of Credit
Financing Receivables	136	212
Financing Receivables, 30 to 59 Days Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	4,476	7,936
Financing Receivables, 30 to 59 Days Past Due | Acquired Loans No Longer Covered By FDIC Loss Sharing Agreements Net Of Discounts
Financing Receivables	1,356	989
Financing Receivables, 30 to 59 Days Past Due | Acquired Non-Covered Loans Net Of Discounts
Financing Receivables	851	1,081
Financing Receivables, 30 to 59 Days Past Due | Loans Receivable Gross
Financing Receivables	26,998	20,679
Financing Receivables, 30 to 59 Days Past Due | Less FDIC Supported Loans And Acquired Not Covered Loans Net Of Discounts
Financing Receivables	6,683	10,006
Financing Receivables, 30 to 59 Days Past Due | Loans Receivable
Financing Receivables	20,315	10,673
Financing Receivables, 60 to 89 Days Past Due | Land Development
Financing Receivables	584	148
Financing Receivables, 60 to 89 Days Past Due | Owner Occupied One To Four Family Residential
Financing Receivables	388	345
Financing Receivables, 60 to 89 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables	278
Financing Receivables, 60 to 89 Days Past Due | Commercial Real Estate
Financing Receivables	1,988	471
Financing Receivables, 60 to 89 Days Past Due | Commercial Business
Financing Receivables	24	9
Financing Receivables, 60 to 89 Days Past Due | Automobile Loan
Financing Receivables	2,451	891
Financing Receivables, 60 to 89 Days Past Due | Consumer Loan
Financing Receivables	278	236
Financing Receivables, 60 to 89 Days Past Due | Home Equity Line of Credit
Financing Receivables	158	123
Financing Receivables, 60 to 89 Days Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	1,201	603
Financing Receivables, 60 to 89 Days Past Due | Acquired Loans No Longer Covered By FDIC Loss Sharing Agreements Net Of Discounts
Financing Receivables	552	39
Financing Receivables, 60 to 89 Days Past Due | Acquired Non-Covered Loans Net Of Discounts
Financing Receivables	173	638
Financing Receivables, 60 to 89 Days Past Due | Loans Receivable Gross
Financing Receivables	8,075	3,503
Financing Receivables, 60 to 89 Days Past Due | Less FDIC Supported Loans And Acquired Not Covered Loans Net Of Discounts
Financing Receivables	1,926	1,280
Financing Receivables, 60 to 89 Days Past Due | Loans Receivable
Financing Receivables	6,149	2,223
Financing Receivables, Equal to Greater than 90 Days Past Due | Subdivision Construction
Financing Receivables	109
Financing Receivables, Equal to Greater than 90 Days Past Due | Land Development
Financing Receivables	1,718	139
Financing Receivables, Equal to Greater than 90 Days Past Due | Owner Occupied One To Four Family Residential
Financing Receivables	1,125	715
Financing Receivables, Equal to Greater than 90 Days Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables	404	345
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Real Estate
Financing Receivables	4,404	13,488
Financing Receivables, Equal to Greater than 90 Days Past Due | Other Residential
Financing Receivables	162
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial Business
Financing Receivables	3,088	288
Financing Receivables, Equal to Greater than 90 Days Past Due | Automobile Loan
Financing Receivables	1,989	721
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer Loan
Financing Receivables	649	576
Financing Receivables, Equal to Greater than 90 Days Past Due | Home Equity Line of Credit
Financing Receivables	433	297
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	8,226	9,712
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	1,401	33
Financing Receivables, Equal to Greater than 90 Days Past Due | Acquired Non-Covered Loans Net Of Discounts
Financing Receivables	2,854	5,914
Financing Receivables, Equal to Greater than 90 Days Past Due | Loans Receivable Gross
Financing Receivables	26,562	32,228
Financing Receivables, Equal to Greater than 90 Days Past Due | Less FDIC Supported Loans And Acquired Not Covered Loans Net Of Discounts
Financing Receivables	12,481	15,659
Financing Receivables, Equal to Greater than 90 Days Past Due | Loans Receivable
Financing Receivables	14,081	16,569
Financing Receivables Past Due | One To Four Family Residential Construction
Financing Receivables		649
Financing Receivables Past Due | Subdivision Construction
Financing Receivables	109
Financing Receivables Past Due | Land Development
Financing Receivables	2,715	2,532
Financing Receivables Past Due | Commercial Construction
Financing Receivables		1
Financing Receivables Past Due | Owner Occupied One To Four Family Residential
Financing Receivables	3,273	2,277
Financing Receivables Past Due | Non-Owner Occupied One To Four Family Residential
Financing Receivables	991	345
Financing Receivables Past Due | Commercial Real Estate
Financing Receivables	8,361	14,994
Financing Receivables Past Due | Other Residential
Financing Receivables	4,794
Financing Receivables Past Due | Commercial Business
Financing Receivables	4,853	1,317
Financing Receivables Past Due | Automobile Loan
Financing Receivables	12,692	4,963
Financing Receivables Past Due | Consumer Loan
Financing Receivables	2,030	1,755
Financing Receivables Past Due | Home Equity Line of Credit
Financing Receivables	727	632
Financing Receivables Past Due | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	13,903	18,251
Financing Receivables Past Due | Acquired Loans No Longer Covered By FDIC Loss Sharing Agreements Net Of Discounts
Financing Receivables	3,309	1,061
Financing Receivables Past Due | Acquired Non-Covered Loans Net Of Discounts
Financing Receivables	3,878	7,633
Financing Receivables Past Due | Loans Receivable Gross
Financing Receivables	61,635	56,410
Financing Receivables Past Due | Less FDIC Supported Loans And Acquired Not Covered Loans Net Of Discounts
Financing Receivables	21,090	26,945
Financing Receivables Past Due | Loans Receivable
Financing Receivables	40,545	29,465
Financing Receivables Current | One To Four Family Residential Construction
Financing Receivables	21,737	22,877
Financing Receivables Current | Subdivision Construction
Financing Receivables	17,077	38,504
Financing Receivables Current | Land Development
Financing Receivables	47,909	55,908
Financing Receivables Current | Commercial Construction
Financing Receivables	780,614	600,793
Financing Receivables Current | Owner Occupied One To Four Family Residential
Financing Receivables	197,067	108,000
Financing Receivables Current | Non-Owner Occupied One To Four Family Residential
Financing Receivables	135,933	149,529
Financing Receivables Current | Commercial Real Estate
Financing Receivables	1,178,545	1,028,480
Financing Receivables Current | Other Residential
Financing Receivables	658,584	419,549
Financing Receivables Current | Commercial Business
Financing Receivables	343,775	356,263
Financing Receivables Current | Industrial Revenue Bonds
Financing Receivables	25,065	37,362
Financing Receivables Current | Automobile Loan
Financing Receivables	481,541	434,932
Financing Receivables Current | Consumer Loan
Financing Receivables	67,971	73,074
Financing Receivables Current | Home Equity Line of Credit
Financing Receivables	108,026	83,334
Financing Receivables Current | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	120,453	217,820
Financing Receivables Current | Acquired Loans No Longer Covered By FDIC Loss Sharing Agreements Net Of Discounts
Financing Receivables	69,260	32,277
Financing Receivables Current | Acquired Non-Covered Loans Net Of Discounts
Financing Receivables	72,356	85,803
Financing Receivables Current | Loans Receivable Gross
Financing Receivables	4,325,913	3,744,505
Financing Receivables Current | Less FDIC Supported Loans And Acquired Not Covered Loans Net Of Discounts
Financing Receivables	262,069	335,900
Financing Receivables Current | Loans Receivable
Financing Receivables	4,063,844	3,408,605
Financing Receivables Total | One To Four Family Residential Construction
Financing Receivables	21,737	23,526
Financing Receivables Total | Subdivision Construction
Financing Receivables	17,186	38,504
Financing Receivables Total | Land Development
Financing Receivables	50,624	58,440
Financing Receivables Total | Commercial Construction
Financing Receivables	780,614	600,794
Financing Receivables Total | Owner Occupied One To Four Family Residential
Financing Receivables	200,340	110,277
Financing Receivables Total | Non-Owner Occupied One To Four Family Residential
Financing Receivables	136,924	149,874
Financing Receivables Total | Commercial Real Estate
Financing Receivables	1,186,906	1,043,474
Financing Receivables Total | Other Residential
Financing Receivables	663,378	419,549
Financing Receivables Total | Commercial Business
Financing Receivables	348,628	357,580
Financing Receivables Total | Industrial Revenue Bonds
Financing Receivables	25,065	37,362
Financing Receivables Total | Automobile Loan
Financing Receivables	494,233	439,895
Financing Receivables Total | Consumer Loan
Financing Receivables	70,001	74,829
Financing Receivables Total | Home Equity Line of Credit
Financing Receivables	108,753	83,966
Financing Receivables Total | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	134,356	236,071
Financing Receivables Total | Acquired Loans No Longer Covered By FDIC Loss Sharing Agreements Net Of Discounts
Financing Receivables	72,569	33,338
Financing Receivables Total | Acquired Non-Covered Loans Net Of Discounts
Financing Receivables	76,234	93,436
Financing Receivables Total | Loans Receivable Gross
Financing Receivables	4,387,548	3,800,915
Financing Receivables Total | Less FDIC Supported Loans And Acquired Not Covered Loans Net Of Discounts
Financing Receivables	283,159	362,845
Financing Receivables Total | Loans Receivable
Financing Receivables	4,104,389	$ 3,438,070
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Acquired FDIC Covered Loans Net of Discount
Financing Receivables	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	222
Financing Receivables Greater Than 90 Days Past Due and Still Accruing | Loans Receivable Gross
Financing Receivables	523
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	$ 523