LOANS - LOANS BY RISK CATEGORY (Details) $ in Thousands	Sep. 30, 2019 USD ($) item	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)
Breakdown of loans by risk category
Total loans	$ 1,059,942	$ 1,038,864	$ 993,808
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	44
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	$ 508,332	496,207	475,978
Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	209,872	191,060	180,661
Commercial construction
Breakdown of loans by risk category
Total loans	34,511	29,765	23,812
One to four family residential real estate
Breakdown of loans by risk category
Total loans	268,333	286,908	277,508
Consumer construction
Breakdown of loans by risk category
Total loans	18,680	14,553	17,502
Consumer
Breakdown of loans by risk category
Total loans	20,214	20,371	$ 18,347
Strong (1)
Breakdown of loans by risk category
Total loans	20,779	18,464
Strong (1) | Commercial real estate
Breakdown of loans by risk category
Total loans	9,143	9,564
Strong (1) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	11,595	8,077
Strong (1) | Commercial construction
Breakdown of loans by risk category
Total loans		734
Strong (1) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	40	70
Strong (1) | Consumer
Breakdown of loans by risk category
Total loans	1	19
Good (2)
Breakdown of loans by risk category
Total loans	30,067	34,758
Good (2) | Commercial real estate
Breakdown of loans by risk category
Total loans	18,231	22,265
Good (2) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	9,445	8,678
Good (2) | Commercial construction
Breakdown of loans by risk category
Total loans	397	706
Good (2) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	1,822	2,873
Good (2) | Consumer
Breakdown of loans by risk category
Total loans	172	236
Average (3)
Breakdown of loans by risk category
Total loans	295,372	276,774
Average (3) | Commercial real estate
Breakdown of loans by risk category
Total loans	213,506	189,898
Average (3) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	69,891	72,466
Average (3) | Commercial construction
Breakdown of loans by risk category
Total loans	7,792	6,844
Average (3) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	3,894	6,941
Average (3) | Consumer
Breakdown of loans by risk category
Total loans	289	625
Acceptable
Breakdown of loans by risk category
Total loans	407,948	384,379
Acceptable | Commercial real estate
Breakdown of loans by risk category
Total loans	257,222	257,627
Acceptable | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	113,790	97,441
Acceptable | Commercial construction
Breakdown of loans by risk category
Total loans	22,363	12,244
Acceptable | One to four family residential real estate
Breakdown of loans by risk category
Total loans	13,858	15,711
Acceptable | Consumer construction
Breakdown of loans by risk category
Total loans		200
Acceptable | Consumer
Breakdown of loans by risk category
Total loans	715	1,156
Acceptable Watch
Breakdown of loans by risk category
Total loans	6,776	11,278
Acceptable Watch | Commercial real estate
Breakdown of loans by risk category
Total loans	4,728	5,993
Acceptable Watch | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	696	2,269
Acceptable Watch | Commercial construction
Breakdown of loans by risk category
Total loans	402	829
Acceptable Watch | One to four family residential real estate
Breakdown of loans by risk category
Total loans	851	2,095
Acceptable Watch | Consumer construction
Breakdown of loans by risk category
Total loans	99	50
Acceptable Watch | Consumer
Breakdown of loans by risk category
Total loans		42
Substandard (6)
Breakdown of loans by risk category
Total loans	13,687	18,657
Substandard (6) | Commercial real estate
Breakdown of loans by risk category
Total loans	5,502	10,860
Substandard (6) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	4,455	2,129
Substandard (6) | Commercial construction
Breakdown of loans by risk category
Total loans	712	823
Substandard (6) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	2,953	4,757
Substandard (6) | Consumer construction
Breakdown of loans by risk category
Total loans		11
Substandard (6) | Consumer
Breakdown of loans by risk category
Total loans	65	77
Rating Unassigned
Breakdown of loans by risk category
Total loans	285,313	294,554
Rating Unassigned | Commercial construction
Breakdown of loans by risk category
Total loans	2,845	7,585
Rating Unassigned | One to four family residential real estate
Breakdown of loans by risk category
Total loans	244,915	254,461
Rating Unassigned | Consumer construction
Breakdown of loans by risk category
Total loans	18,581	14,292
Rating Unassigned | Consumer
Breakdown of loans by risk category
Total loans	$ 18,972	$ 18,216