NOTE 6: LOANS AND ALLOWANCE FOR LOAN LOSSES: Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Satisfactory \| Automobile Loan
Loan Portfolio Internal Grading System Classification	$ 276,220	$ 354,588
Satisfactory \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	25,056	20,275
Satisfactory \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	14,087	15,602
Satisfactory \| Land Development
Loan Portfolio Internal Grading System Classification	39,902	39,171
Satisfactory \| Commercial Construction
Loan Portfolio Internal Grading System Classification	1,283,468	1,068,352
Satisfactory \| Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	253,695	188,706
Satisfactory \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	106,619	117,103
Satisfactory \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,370,246	1,218,431
Satisfactory \| Other Residential
Loan Portfolio Internal Grading System Classification	791,285	742,237
Satisfactory \| Commercial Business
Loan Portfolio Internal Grading System Classification	325,260	344,479
Satisfactory \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	14,179	21,859
Satisfactory \| Consumer Loan
Loan Portfolio Internal Grading System Classification	57,337	62,682
Satisfactory \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	116,804	114,860
Satisfactory \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	177,130	209,657
Satisfactory \| Loans Receivable
Loan Portfolio Internal Grading System Classification	4,851,288	4,518,002
Watch \| Automobile Loan
Loan Portfolio Internal Grading System Classification	155	0
Watch \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	421	518
Watch \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	1,967	2,362
Watch \| Land Development
Loan Portfolio Internal Grading System Classification	4,600	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	62	0
Watch \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	1,092	389
Watch \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	11,330	9,909
Watch \| Other Residential
Loan Portfolio Internal Grading System Classification	501	1,532
Watch \| Commercial Business
Loan Portfolio Internal Grading System Classification	5,187	6,306
Watch \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Consumer Loan
Loan Portfolio Internal Grading System Classification	162	0
Watch \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	152	0
Watch \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	0	0
Watch \| Loans Receivable
Loan Portfolio Internal Grading System Classification	25,629	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	1,509	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	0	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	2,237	1,809
Substandard \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	1,571	1,976
Substandard \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	2,295	6,989
Substandard \| Other Residential
Loan Portfolio Internal Grading System Classification	0	1,876
Substandard \| Commercial Business
Loan Portfolio Internal Grading System Classification	1,590	2,066
Substandard \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	0	0
Substandard \| Consumer Loan
Loan Portfolio Internal Grading System Classification	422	686
Substandard \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	105	579
Substandard \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	20	12
Substandard \| Loans Receivable
Loan Portfolio Internal Grading System Classification	9,749	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	277,884	357,142
Total for Portfolio \| One-to-Four-Family Residential Construction
Loan Portfolio Internal Grading System Classification	25,477	20,793
Total for Portfolio \| Subdivision Construction
Loan Portfolio Internal Grading System Classification	16,054	18,062
Total for Portfolio \| Land Development
Loan Portfolio Internal Grading System Classification	44,502	43,971
Total for Portfolio \| Commercial Construction
Loan Portfolio Internal Grading System Classification	1,283,468	1,068,352
Total for Portfolio \| Owner Occupied One-to-Four-Family Residential
Loan Portfolio Internal Grading System Classification	255,994	190,515
Total for Portfolio \| Non-Owner Occupied One To Four Family Residential
Loan Portfolio Internal Grading System Classification	109,282	119,468
Total for Portfolio \| Commercial Real Estate
Loan Portfolio Internal Grading System Classification	1,383,871	1,235,329
Total for Portfolio \| Other Residential
Loan Portfolio Internal Grading System Classification	791,786	745,645
Total for Portfolio \| Commercial Business
Loan Portfolio Internal Grading System Classification	332,037	353,351
Total for Portfolio \| Industrial Revenue Bonds
Loan Portfolio Internal Grading System Classification	14,179	21,859
Total for Portfolio \| Consumer Loan
Loan Portfolio Internal Grading System Classification	57,921	63,368
Total for Portfolio \| Home Equity Line of Credit
Loan Portfolio Internal Grading System Classification	117,061	115,439
Total for Portfolio \| Acquired Loans Net of Discount
Loan Portfolio Internal Grading System Classification	177,150	209,669
Total for Portfolio \| Loans Receivable
Loan Portfolio Internal Grading System Classification	$ 4,886,666	$ 4,562,963

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

Sep. 30, 2018

Dec. 31, 2017

Satisfactory | Automobile Loan

Loan Portfolio Internal Grading System Classification

$ 276,220

$ 354,588

Satisfactory | One-to-Four-Family Residential Construction

Loan Portfolio Internal Grading System Classification

25,056

20,275

Satisfactory | Subdivision Construction