NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Satisfactory \| Automobile Loan
Loan Portfolio Internal Grading System Classification	$ 173,996	$ 251,824
Satisfactory \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	35,153	25,803
Satisfactory \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	16,326	12,077
Satisfactory \| Land Development
Loan Portfolio Internal Grading System Classification	38,788	39,892
Satisfactory \| Commercial Construction
Loan Portfolio Internal Grading System Classification	1,335,827	1,417,166
Satisfactory \| Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	343,359	274,661
Satisfactory \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	121,298	119,951
Satisfactory \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,458,339	1,357,987
Satisfactory \| Other Residential
Loan Portfolio Internal Grading System Classification	841,087	784,393
Satisfactory \| Commercial Business
Loan Portfolio Internal Grading System Classification	299,286	315,518
Satisfactory \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	13,350	13,940
Satisfactory \| Consumer Loan
Loan Portfolio Internal Grading System Classification	48,211	56,859
Satisfactory \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	119,130	121,134
Satisfactory \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	142,084	167,632
Satisfactory \| Loans Receivable
Loan Portfolio Internal Grading System Classification	4,986,234	4,958,837
Watch \| Automobile Loan
Loan Portfolio Internal Grading System Classification	60	116
Watch \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	0	374
Watch \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	0	1,718
Watch \| Land Development
Loan Portfolio Internal Grading System Classification	28	4,600
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	43
Watch \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	425	941
Watch \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	32,312	11,061
Watch \| Other Residential
Loan Portfolio Internal Grading System Classification	0	501
Watch \| Commercial Business
Loan Portfolio Internal Grading System Classification	4,702	5,163
Watch \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Consumer Loan
Loan Portfolio Internal Grading System Classification	94	157
Watch \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	44	118
Watch \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Loans Receivable
Loan Portfolio Internal Grading System Classification	37,665	24,792
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	654	1,588
Substandard \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	0	49
Substandard \| Land Development
Loan Portfolio Internal Grading System Classification	83	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	1,739	2,162
Substandard \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	566	1,546
Substandard \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	3,970	2,387
Substandard \| Other Residential
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Commercial Business
Loan Portfolio Internal Grading System Classification	1,245	1,437
Substandard \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Consumer Loan
Loan Portfolio Internal Grading System Classification	318	334
Substandard \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	531	100
Substandard \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	15	19
Substandard \| Loans Receivable
Loan Portfolio Internal Grading System Classification	9,121	9,622
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 Net of Discount
Loan Portfolio Internal Grading System Classification	0	0
Doubtful \| Loans Receivable
Loan Portfolio Internal Grading System Classification	0	0
Total for Portfolio \| Automobile Loan
Loan Portfolio Internal Grading System Classification	174,710	253,528
Total for Portfolio \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	35,153	26,177
Total for Portfolio \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	16,326	13,844
Total for Portfolio \| Land Development
Loan Portfolio Internal Grading System Classification	38,899	44,492
Total for Portfolio \| Commercial Construction
Loan Portfolio Internal Grading System Classification	1,335,827	1,417,166
Total for Portfolio \| Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	345,098	276,866
Total for Portfolio \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	122,289	122,438
Total for Portfolio \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,494,621	1,371,435
Total for Portfolio \| Other Residential
Loan Portfolio Internal Grading System Classification	841,087	784,894
Total for Portfolio \| Commercial Business
Loan Portfolio Internal Grading System Classification	305,233	322,118
Total for Portfolio \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	13,350	13,940
Total for Portfolio \| Consumer Loan
Loan Portfolio Internal Grading System Classification	48,623	57,350
Total for Portfolio \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	119,705	121,352
Total for Portfolio \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	142,099	167,651
Total for Portfolio \| Loans Receivable
Loan Portfolio Internal Grading System Classification	$ 5,033,020	$ 4,993,251

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

Sep. 30, 2019

Dec. 31, 2018

Satisfactory | Automobile Loan

Loan Portfolio Internal Grading System Classification

$ 173,996

$ 251,824

Satisfactory | One-to-Four-Family Residential Construction

Loan Portfolio Internal Grading System Classification

35,153

25,803

Satisfactory | Subdivision Construction