LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan delinquencies (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loans past due
Current	$ 1,129,408	$ 1,119,600
Total Accruing Past Due	19,518	18,308
Non-accrual	12,236	5,667
Total Financing Receivables	1,161,162	1,143,575
30-89 Days
Loans past due
Total Accruing Past Due	19,518	18,308
Construction and development
Loans past due
Current	30,076	42,288
Non-accrual	1,360
Total Financing Receivables	31,436	42,288
Commercial real estate
Loans past due
Current	419,406	390,601
Total Accruing Past Due	973	1,102
Non-accrual	2,921	3,260
Total Financing Receivables	423,300	394,963
Commercial real estate | 30-89 Days
Loans past due
Total Accruing Past Due	973	1,102
Commercial and industrial
Loans past due
Current	52,936	32,315
Total Accruing Past Due	58	26
Non-accrual	19	685
Total Financing Receivables	53,013	33,026
Commercial and industrial | 30-89 Days
Loans past due
Total Accruing Past Due	58	26
Residential real estate
Loans past due
Current	625,222	651,439
Total Accruing Past Due	18,487	17,180
Non-accrual	7,936	1,722
Total Financing Receivables	651,645	670,341
Residential real estate | 30-89 Days
Loans past due
Total Accruing Past Due	18,487	17,180
Consumer and Other
Loans past due
Current	1,768	2,957
Total Financing Receivables	$ 1,768	$ 2,957