LOANS - LOANS BY RISK CATEGORY (Details) $ in Thousands	Sep. 30, 2017 USD ($) item	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)
Breakdown of loans by risk category
Total loans	$ 808,149	$ 781,857	$ 756,804
Minimum
Breakdown of loans by risk category
Credit risk rating for which reserves are established if no specific reserves made | item	6
Maximum
Breakdown of loans by risk category
Credit risk rating for which general reserves are established | item	5
Credit risk rating for which reserves are established if no specific reserves made | item	7
Commercial real estate
Breakdown of loans by risk category
Total loans	$ 409,269	389,420	362,858
Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	154,638	142,648	136,065
Commercial construction
Breakdown of loans by risk category
Total loans	8,892	11,505	14,343
One to four family residential real estate
Breakdown of loans by risk category
Total loans	204,419	205,945	211,072
Consumer construction
Breakdown of loans by risk category
Total loans	12,684	12,226	11,768
Consumer
Breakdown of loans by risk category
Total loans	18,247	20,113	$ 20,698
Strong (1)
Breakdown of loans by risk category
Total loans	17,445	14,230
Strong (1) | Commercial real estate
Breakdown of loans by risk category
Total loans	4,058	3,021
Strong (1) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	13,262	10,421
Strong (1) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	125	740
Strong (1) | Consumer construction
Breakdown of loans by risk category
Total loans		28
Strong (1) | Consumer
Breakdown of loans by risk category
Total loans		20
Good (2)
Breakdown of loans by risk category
Total loans	31,606	39,647
Good (2) | Commercial real estate
Breakdown of loans by risk category
Total loans	20,655	23,940
Good (2) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	9,282	13,434
Good (2) | Commercial construction
Breakdown of loans by risk category
Total loans	313	900
Good (2) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	1,356	1,373
Average (3)
Breakdown of loans by risk category
Total loans	212,141	196,625
Average (3) | Commercial real estate
Breakdown of loans by risk category
Total loans	156,563	140,618
Average (3) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	49,947	49,434
Average (3) | Commercial construction
Breakdown of loans by risk category
Total loans	3,043	3,146
Average (3) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	2,588	3,412
Average (3) | Consumer
Breakdown of loans by risk category
Total loans		15
Acceptable/Acceptable Watch (4)
Breakdown of loans by risk category
Total loans	295,740	296,400
Acceptable/Acceptable Watch (4) | Commercial real estate
Breakdown of loans by risk category
Total loans	213,805	216,518
Acceptable/Acceptable Watch (4) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	75,366	67,582
Acceptable/Acceptable Watch (4) | Commercial construction
Breakdown of loans by risk category
Total loans	1,170	2,660
Acceptable/Acceptable Watch (4) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	5,370	9,585
Acceptable/Acceptable Watch (4) | Consumer
Breakdown of loans by risk category
Total loans	29	55
Special Mention (5)
Breakdown of loans by risk category
Total loans	16,417
Special Mention (5) | Commercial real estate
Breakdown of loans by risk category
Total loans	9,529
Special Mention (5) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	5,394
Special Mention (5) | Commercial construction
Breakdown of loans by risk category
Total loans	377
Special Mention (5) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	1,111
Special Mention (5) | Consumer
Breakdown of loans by risk category
Total loans	6
Substandard (6)
Breakdown of loans by risk category
Total loans	10,508	13,098
Substandard (6) | Commercial real estate
Breakdown of loans by risk category
Total loans	4,659	5,323
Substandard (6) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	1,387	1,777
Substandard (6) | Commercial construction
Breakdown of loans by risk category
Total loans	653	385
Substandard (6) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	3,720	5,493
Substandard (6) | Consumer construction
Breakdown of loans by risk category
Total loans	14	17
Substandard (6) | Consumer
Breakdown of loans by risk category
Total loans	75	103
Rating Unassigned
Breakdown of loans by risk category
Total loans	224,292	221,857
Rating Unassigned | Commercial construction
Breakdown of loans by risk category
Total loans	3,336	4,414
Rating Unassigned | One to four family residential real estate
Breakdown of loans by risk category
Total loans	190,149	185,342
Rating Unassigned | Consumer construction
Breakdown of loans by risk category
Total loans	12,670	12,181
Rating Unassigned | Consumer
Breakdown of loans by risk category
Total loans	$ 18,137	$ 19,920