LOANS - LOANS BY RISK CATEGORY (Details) $ in Thousands	Jun. 30, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Jun. 30, 2017 USD ($)
Breakdown of loans by risk category
Total loans	$ 1,003,377	$ 811,078	$ 790,753
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	$ 478,798	406,742	397,655
Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	185,032	156,951	151,588
Commercial construction
Breakdown of loans by risk category
Total loans	20,895	9,243	10,145
One to four family residential real estate
Breakdown of loans by risk category
Total loans	284,041	209,890	200,771
Consumer construction
Breakdown of loans by risk category
Total loans	15,409	10,818	11,535
Consumer
Breakdown of loans by risk category
Total loans	19,202	17,434	$ 19,059
Strong (1)
Breakdown of loans by risk category
Total loans	22,693	14,303
Strong (1) | Commercial real estate
Breakdown of loans by risk category
Total loans	10,788	2,775
Strong (1) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	11,434	11,528
Strong (1) | Commercial construction
Breakdown of loans by risk category
Total loans	471
Good (2)
Breakdown of loans by risk category
Total loans	34,754	34,594
Good (2) | Commercial real estate
Breakdown of loans by risk category
Total loans	24,122	23,929
Good (2) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	8,990	8,980
Good (2) | Commercial construction
Breakdown of loans by risk category
Total loans	284	308
Good (2) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	1,358	1,377
Average (3)
Breakdown of loans by risk category
Total loans	248,112	218,157
Average (3) | Commercial real estate
Breakdown of loans by risk category
Total loans	176,912	159,385
Average (3) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	64,757	53,448
Average (3) | Commercial construction
Breakdown of loans by risk category
Total loans	3,934	2,749
Average (3) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	2,509	2,575
Acceptable
Breakdown of loans by risk category
Total loans	356,897	292,672
Acceptable | Commercial real estate
Breakdown of loans by risk category
Total loans	248,143	207,921
Acceptable | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	95,680	77,964
Acceptable | Commercial construction
Breakdown of loans by risk category
Total loans	6,858	1,310
Acceptable | One to four family residential real estate
Breakdown of loans by risk category
Total loans	6,191	5,449
Acceptable | Consumer
Breakdown of loans by risk category
Total loans	25	28
Acceptable Watch
Breakdown of loans by risk category
Total loans	20,803	14,223
Acceptable Watch | Commercial real estate
Breakdown of loans by risk category
Total loans	16,215	8,700
Acceptable Watch | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	2,808	3,658
Acceptable Watch | Commercial construction
Breakdown of loans by risk category
Total loans	639	648
Acceptable Watch | One to four family residential real estate
Breakdown of loans by risk category
Total loans	1,138	1,212
Acceptable Watch | Consumer
Breakdown of loans by risk category
Total loans	3	5
Substandard (6)
Breakdown of loans by risk category
Total loans	7,453	9,404
Substandard (6) | Commercial real estate
Breakdown of loans by risk category
Total loans	2,618	4,032
Substandard (6) | Commercial, financial, and agricultural
Breakdown of loans by risk category
Total loans	1,363	1,373
Substandard (6) | Commercial construction
Breakdown of loans by risk category
Total loans	371	374
Substandard (6) | One to four family residential real estate
Breakdown of loans by risk category
Total loans	3,068	3,515
Substandard (6) | Consumer construction
Breakdown of loans by risk category
Total loans	12	14
Substandard (6) | Consumer
Breakdown of loans by risk category
Total loans	21	96
Rating Unassigned
Breakdown of loans by risk category
Total loans	312,665	227,725
Rating Unassigned | Commercial construction
Breakdown of loans by risk category
Total loans	8,338	3,854
Rating Unassigned | One to four family residential real estate
Breakdown of loans by risk category
Total loans	269,777	195,762
Rating Unassigned | Consumer construction
Breakdown of loans by risk category
Total loans	15,397	10,804
Rating Unassigned | Consumer
Breakdown of loans by risk category
Total loans	$ 19,153	$ 17,305