LOANS - LOANS BY RISK CATEGORY (Details) $ in Thousands	Mar. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($)	Mar. 31, 2019 USD ($)
Breakdown of loans by risk category
Total loans	$ 1,044,177	$ 1,058,776	$ 1,045,428
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	$ 522,659	514,394	498,471
Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	207,727	211,023	201,089
Commercial construction
Breakdown of loans by risk category
Total loans	29,971	40,107	33,118
One to four family residential real estate
Breakdown of loans by risk category
Total loans	244,059	253,918	281,104
Consumer construction
Breakdown of loans by risk category
Total loans	19,386	18,096	12,022
Consumer
Breakdown of loans by risk category
Total loans	20,375	21,238	$ 19,624
Strong (1)
Breakdown of loans by risk category
Total loans	32,386	25,145
Strong (1) | Commercial real estate
Breakdown of loans by risk category
Total loans	14,737	9,979
Strong (1) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	17,609	15,126
Strong (1) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	40	40
Good (2)
Breakdown of loans by risk category
Total loans	29,786	24,621
Good (2) | Commercial real estate
Breakdown of loans by risk category
Total loans	18,108	17,516
Good (2) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	9,053	4,510
Good (2) | Commercial construction
Breakdown of loans by risk category
Total loans	278	292
Good (2) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	2,217	2,145
Good (2) | Consumer
Breakdown of loans by risk category
Total loans	130	158
Average (3)
Breakdown of loans by risk category
Total loans	305,949	311,287
Average (3) | Commercial real estate
Breakdown of loans by risk category
Total loans	227,628	228,962
Average (3) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	64,182	70,748
Average (3) | Commercial construction
Breakdown of loans by risk category
Total loans	8,768	6,390
Average (3) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	5,119	4,937
Average (3) | Consumer
Breakdown of loans by risk category
Total loans	252	250
Acceptable
Breakdown of loans by risk category
Total loans	397,314	408,107
Acceptable | Commercial real estate
Breakdown of loans by risk category
Total loans	253,746	248,177
Acceptable | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	111,434	115,229
Acceptable | Commercial construction
Breakdown of loans by risk category
Total loans	16,474	28,893
Acceptable | One to four family residential real estate
Breakdown of loans by risk category
Total loans	15,187	15,168
Acceptable | Consumer
Breakdown of loans by risk category
Total loans	473	640
Acceptable Watch
Breakdown of loans by risk category
Total loans	5,837	6,432
Acceptable Watch | Commercial real estate
Breakdown of loans by risk category
Total loans	3,865	4,468
Acceptable Watch | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	759	930
Acceptable Watch | Commercial construction
Breakdown of loans by risk category
Total loans	596	400
Acceptable Watch | One to four family residential real estate
Breakdown of loans by risk category
Total loans	617	634
Substandard (6)
Breakdown of loans by risk category
Total loans	12,304	13,052
Substandard (6) | Commercial real estate
Breakdown of loans by risk category
Total loans	4,575	5,292
Substandard (6) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	4,690	4,480
Substandard (6) | Commercial construction
Breakdown of loans by risk category
Total loans	398	607
Substandard (6) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	2,556	2,632
Substandard (6) | Consumer
Breakdown of loans by risk category
Total loans	85	41
Rating Unassigned
Breakdown of loans by risk category
Total loans	260,601	270,132
Rating Unassigned | Commercial construction
Breakdown of loans by risk category
Total loans	3,457	3,525
Rating Unassigned | One to four family residential real estate
Breakdown of loans by risk category
Total loans	218,323	228,362
Rating Unassigned | Consumer construction
Breakdown of loans by risk category
Total loans	19,386	18,096
Rating Unassigned | Consumer
Breakdown of loans by risk category
Total loans	$ 19,435	$ 20,149