NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Satisfactory \| Automobile Loan
Loan Portfolio Internal Grading System Classification	$ 320,840	$ 354,588
Satisfactory \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	24,104	20,275
Satisfactory \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	13,665	15,602
Satisfactory \| Land Development
Loan Portfolio Internal Grading System Classification	41,240	39,171
Satisfactory \| Commercial Construction
Loan Portfolio Internal Grading System Classification	1,126,007	1,068,352
Satisfactory \| Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	200,368	188,706
Satisfactory \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	113,916	117,103
Satisfactory \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,279,403	1,218,431
Satisfactory \| Other Residential
Loan Portfolio Internal Grading System Classification	735,153	742,237
Satisfactory \| Commercial Business
Loan Portfolio Internal Grading System Classification	343,087	344,479
Satisfactory \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	21,031	21,859
Satisfactory \| Consumer Loan
Loan Portfolio Internal Grading System Classification	59,785	62,682
Satisfactory \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	114,293	114,860
Satisfactory \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	197,473	209,657
Satisfactory \| Loans Receivable
Loan Portfolio Internal Grading System Classification	4,590,365	4,518,002
Watch \| Automobile Loan
Loan Portfolio Internal Grading System Classification	0	0
Watch \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	517	518
Watch \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	2,306	2,362
Watch \| Land Development
Loan Portfolio Internal Grading System Classification	4,700	4,800
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	0	0
Watch \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	1,432	389
Watch \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	8,056	9,909
Watch \| Other Residential
Loan Portfolio Internal Grading System Classification	1,526	1,532
Watch \| Commercial Business
Loan Portfolio Internal Grading System Classification	5,056	6,306
Watch \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Consumer Loan
Loan Portfolio Internal Grading System Classification	13	0
Watch \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Loans Receivable
Loan Portfolio Internal Grading System Classification	23,606	25,816
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 Net of Discount
Loan Portfolio Internal Grading System Classification	0	0
Special Mention \| Loans Receivable
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Automobile Loan
Loan Portfolio Internal Grading System Classification	2,312	2,554
Substandard \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	96	98
Substandard \| Land Development
Loan Portfolio Internal Grading System Classification	0	0
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	1,707	1,809
Substandard \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	2,226	1,976
Substandard \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	5,667	6,989
Substandard \| Other Residential
Loan Portfolio Internal Grading System Classification	0	1,876
Substandard \| Commercial Business
Loan Portfolio Internal Grading System Classification	3,746	2,066
Substandard \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Consumer Loan
Loan Portfolio Internal Grading System Classification	763	686
Substandard \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	549	579
Substandard \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	33	12
Substandard \| Loans Receivable
Loan Portfolio Internal Grading System Classification	17,099	18,645
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	500
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 Net of Discount
Loan Portfolio Internal Grading System Classification	0	0
Doubtful \| Loans Receivable
Loan Portfolio Internal Grading System Classification	0	500
Total for Portfolio \| Automobile Loan
Loan Portfolio Internal Grading System Classification	323,152	357,142
Total for Portfolio \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	24,621	20,793
Total for Portfolio \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	16,067	18,062
Total for Portfolio \| Land Development
Loan Portfolio Internal Grading System Classification	45,940	43,971
Total for Portfolio \| Commercial Construction
Loan Portfolio Internal Grading System Classification	1,126,007	1,068,352
Total for Portfolio \| Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	202,075	190,515
Total for Portfolio \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	117,574	119,468
Total for Portfolio \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,293,126	1,235,329
Total for Portfolio \| Other Residential
Loan Portfolio Internal Grading System Classification	736,679	745,645
Total for Portfolio \| Commercial Business
Loan Portfolio Internal Grading System Classification	351,889	353,351
Total for Portfolio \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	21,031	21,859
Total for Portfolio \| Consumer Loan
Loan Portfolio Internal Grading System Classification	60,561	63,368
Total for Portfolio \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	114,842	115,439
Total for Portfolio \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	197,506	209,669
Total for Portfolio \| Loans Receivable
Loan Portfolio Internal Grading System Classification	$ 4,631,070	$ 4,562,963

NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable Credit Quality Indicators (Details) - USD ($)
$ in Thousands

Mar. 31, 2018

Dec. 31, 2017

Satisfactory | Automobile Loan

Loan Portfolio Internal Grading System Classification

$ 320,840

$ 354,588

Satisfactory | One-to-Four-Family Residential Construction

Loan Portfolio Internal Grading System Classification

24,104

20,275

Satisfactory | Subdivision Construction