NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Satisfactory | Automobile Loan
Loan Portfolio Internal Grading System Classification	$ 391,732	$ 492,165
Satisfactory | One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	19,645	20,771
Satisfactory | Subdivision Construction
Loan Portfolio Internal Grading System Classification	15,346	14,059
Satisfactory | Land Development
Loan Portfolio Internal Grading System Classification	40,540	39,925
Satisfactory | Commercial Construction
Loan Portfolio Internal Grading System Classification	984,329	780,614
Satisfactory | Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	188,106	198,835
Satisfactory | Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	121,006	135,930
Satisfactory | Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,216,971	1,160,280
Satisfactory | Other Residential
Loan Portfolio Internal Grading System Classification	758,347	658,846
Satisfactory | Commercial Business
Loan Portfolio Internal Grading System Classification	356,535	342,685
Satisfactory | Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	22,614	25,065
Satisfactory | Consumer Loan
Loan Portfolio Internal Grading System Classification	62,842	69,338
Satisfactory | Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	109,602	108,290
Satisfactory | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Loan Portfolio Internal Grading System Classification	165,618	72,552
Satisfactory | Acquired Non-Covered Loans Net of Discounts
Loan Portfolio Internal Grading System Classification	61,520	76,234
Satisfactory | Loans Receivable
Loan Portfolio Internal Grading System Classification	4,514,753	4,329,945
Satisfactory | Acquired FDIC Covered Loans Net of Discount
Loan Portfolio Internal Grading System Classification		134,356
Watch | Automobile Loan
Loan Portfolio Internal Grading System Classification	0	0
Watch | One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	414	966
Watch | Subdivision Construction
Loan Portfolio Internal Grading System Classification	2,356	2,729
Watch | Land Development
Loan Portfolio Internal Grading System Classification	4,800	5,140
Watch | Commercial Construction
Loan Portfolio Internal Grading System Classification	0	0
Watch | Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	37	67
Watch | Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	392	465
Watch | Commercial Real Estate
Loan Portfolio Internal Grading System Classification	11,848	20,154
Watch | Other Residential
Loan Portfolio Internal Grading System Classification	4,110	4,370
Watch | Commercial Business
Loan Portfolio Internal Grading System Classification	4,808	2,651
Watch | Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Watch | Consumer Loan
Loan Portfolio Internal Grading System Classification	0	0
Watch | Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	0	0
Watch | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Watch | Acquired Non-Covered Loans Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Watch | Loans Receivable
Loan Portfolio Internal Grading System Classification	28,765	36,542
Watch | Acquired FDIC Covered Loans Net of Discount
Loan Portfolio Internal Grading System Classification		0
Special Mention | Automobile Loan
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Subdivision Construction
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Land Development
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Commercial Construction
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Commercial Real Estate
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Other Residential
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Commercial Business
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Consumer Loan
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Acquired Non-Covered Loans Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Loans Receivable
Loan Portfolio Internal Grading System Classification	0	0
Special Mention | Acquired FDIC Covered Loans Net of Discount
Loan Portfolio Internal Grading System Classification		0
Substandard | Automobile Loan
Loan Portfolio Internal Grading System Classification	2,592	2,068
Substandard | One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	0	0
Substandard | Subdivision Construction
Loan Portfolio Internal Grading System Classification	136	398
Substandard | Land Development
Loan Portfolio Internal Grading System Classification	0	5,559
Substandard | Commercial Construction
Loan Portfolio Internal Grading System Classification	0	0
Substandard | Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	1,682	1,438
Substandard | Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	2,064	529
Substandard | Commercial Real Estate
Loan Portfolio Internal Grading System Classification	6,678	6,472
Substandard | Other Residential
Loan Portfolio Internal Grading System Classification	0	162
Substandard | Commercial Business
Loan Portfolio Internal Grading System Classification	2,695	3,292
Substandard | Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Substandard | Consumer Loan
Loan Portfolio Internal Grading System Classification	901	663
Substandard | Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	635	463
Substandard | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Loan Portfolio Internal Grading System Classification	14	17
Substandard | Acquired Non-Covered Loans Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Substandard | Loans Receivable
Loan Portfolio Internal Grading System Classification	17,397	21,061
Substandard | Acquired FDIC Covered Loans Net of Discount
Loan Portfolio Internal Grading System Classification		0
Doubtful | Automobile Loan
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Subdivision Construction
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Land Development
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Commercial Construction
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Commercial Real Estate
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Other Residential
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Commercial Business
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Consumer Loan
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Acquired Non-Covered Loans Net of Discounts
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Loans Receivable
Loan Portfolio Internal Grading System Classification	0	0
Doubtful | Acquired FDIC Covered Loans Net of Discount
Loan Portfolio Internal Grading System Classification		0
Total for Portfolio | Automobile Loan
Loan Portfolio Internal Grading System Classification	394,324	494,233
Total for Portfolio | One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	20,059	21,737
Total for Portfolio | Subdivision Construction
Loan Portfolio Internal Grading System Classification	17,838	17,186
Total for Portfolio | Land Development
Loan Portfolio Internal Grading System Classification	45,340	50,624
Total for Portfolio | Commercial Construction
Loan Portfolio Internal Grading System Classification	984,329	780,614
Total for Portfolio | Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	189,825	200,340
Total for Portfolio | Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	123,462	136,924
Total for Portfolio | Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,235,497	1,186,906
Total for Portfolio | Other Residential
Loan Portfolio Internal Grading System Classification	762,457	663,378
Total for Portfolio | Commercial Business
Loan Portfolio Internal Grading System Classification	364,038	348,628
Total for Portfolio | Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	22,614	25,065
Total for Portfolio | Consumer Loan
Loan Portfolio Internal Grading System Classification	63,743	70,001
Total for Portfolio | Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	110,237	108,753
Total for Portfolio | Acquired Loans No Longer Covered by FDIC Loss Sharing Agreements Net of Discounts
Loan Portfolio Internal Grading System Classification	165,632	72,569
Total for Portfolio | Acquired Non-Covered Loans Net of Discounts
Loan Portfolio Internal Grading System Classification	61,520	76,234
Total for Portfolio | Loans Receivable
Loan Portfolio Internal Grading System Classification	$ 4,560,915	4,387,548
Total for Portfolio | Acquired FDIC Covered Loans Net of Discount
Loan Portfolio Internal Grading System Classification		$ 134,356