ALLOWANCE FOR LOAN LOSSES: (Details 6) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Analysis of risk category of loans by class of loans
Total loans	$ 1,903,609	$ 1,835,974
Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	474,500	474,904
Farmland
Analysis of risk category of loans by class of loans
Total loans	106,596	109,185
Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	200,502	195,085
Agriculture
Analysis of risk category of loans by class of loans
Total loans	150,936	149,535
All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	206,956	177,473
First Liens
Analysis of risk category of loans by class of loans
Total loans	254,384	269,948
Home Equity
Analysis of risk category of loans by class of loans
Total loans	36,036	36,003
Junior Liens
Analysis of risk category of loans by class of loans
Total loans	42,155	37,315
Multifamily
Analysis of risk category of loans by class of loans
Total loans	89,972	67,643
All Other Residential
Analysis of risk category of loans by class of loans
Total loans	13,596	13,002
Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	302,631	281,465
All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	25,345	24,416
Pass
Analysis of risk category of loans by class of loans
Total loans	1,140,885	1,092,587
Pass | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	430,015	427,262
Pass | Farmland
Analysis of risk category of loans by class of loans
Total loans	88,338	95,115
Pass | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	179,181	172,739
Pass | Agriculture
Analysis of risk category of loans by class of loans
Total loans	111,724	121,983
Pass | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	194,170	163,492
Pass | First Liens
Analysis of risk category of loans by class of loans
Total loans	45,320	43,674
Pass | Home Equity
Analysis of risk category of loans by class of loans
Total loans	319	363
Pass | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	1,882	1,826
Pass | Multifamily
Analysis of risk category of loans by class of loans
Total loans	89,936	66,133
Pass | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Pass | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	0	0
Pass | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	0	0
Special Mention
Analysis of risk category of loans by class of loans
Total loans	59,391	47,868
Special Mention | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	19,889	16,286
Special Mention | Farmland
Analysis of risk category of loans by class of loans
Total loans	10,782	8,300
Special Mention | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	7,689	5,745
Special Mention | Agriculture
Analysis of risk category of loans by class of loans
Total loans	17,482	13,885
Special Mention | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	2,723	596
Special Mention | First Liens
Analysis of risk category of loans by class of loans
Total loans	750	1,541
Special Mention | Home Equity
Analysis of risk category of loans by class of loans
Total loans	0	0
Special Mention | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	76	85
Special Mention | Multifamily
Analysis of risk category of loans by class of loans
Total loans	0	1,430
Special Mention | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Special Mention | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	0	0
Special Mention | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	0	0
Substandard
Analysis of risk category of loans by class of loans
Total loans	73,784	74,699
Substandard | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	18,611	25,177
Substandard | Farmland
Analysis of risk category of loans by class of loans
Total loans	7,466	5,238
Substandard | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	13,632	16,601
Substandard | Agriculture
Analysis of risk category of loans by class of loans
Total loans	21,388	12,301
Substandard | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	7,459	10,058
Substandard | First Liens
Analysis of risk category of loans by class of loans
Total loans	3,980	4,466
Substandard | Home Equity
Analysis of risk category of loans by class of loans
Total loans	64	86
Substandard | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	342	401
Substandard | Multifamily
Analysis of risk category of loans by class of loans
Total loans	0	15
Substandard | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	67	0
Substandard | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	731	331
Substandard | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	44	25
Doubtful
Analysis of risk category of loans by class of loans
Total loans	143	569
Doubtful | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	38	449
Doubtful | Farmland
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Agriculture
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	0	76
Doubtful | First Liens
Analysis of risk category of loans by class of loans
Total loans	5	18
Doubtful | Home Equity
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	100	26
Doubtful | Multifamily
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	0	0
Doubtful | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	0	0
Not Rated
Analysis of risk category of loans by class of loans
Total loans	629,406	620,251
Not Rated | Commercial & Industrial
Analysis of risk category of loans by class of loans
Total loans	5,947	5,730
Not Rated | Farmland
Analysis of risk category of loans by class of loans
Total loans	10	532
Not Rated | Non Farm, Non Residential
Analysis of risk category of loans by class of loans
Total loans	0	0
Not Rated | Agriculture
Analysis of risk category of loans by class of loans
Total loans	342	1,366
Not Rated | All Other Commercial
Analysis of risk category of loans by class of loans
Total loans	2,604	3,251
Not Rated | First Liens
Analysis of risk category of loans by class of loans
Total loans	204,329	220,249
Not Rated | Home Equity
Analysis of risk category of loans by class of loans
Total loans	35,653	35,554
Not Rated | Junior Liens
Analysis of risk category of loans by class of loans
Total loans	39,755	34,977
Not Rated | Multifamily
Analysis of risk category of loans by class of loans
Total loans	36	65
Not Rated | All Other Residential
Analysis of risk category of loans by class of loans
Total loans	13,529	13,002
Not Rated | Motor Vehicle
Analysis of risk category of loans by class of loans
Total loans	301,900	281,134
Not Rated | All Other Consumer
Analysis of risk category of loans by class of loans
Total loans	$ 25,301	$ 24,391