LOANS - Summary of Past Due and Non-Accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Summary of past due and non-accrual loans
Past Due	$ 37,888	$ 39,097
Loans on Non-accrual	31,596	30,321
Loans past due 90 days or more and still accruing	0	0
30 to 59 Days
Summary of past due and non-accrual loans
Past Due	20,648	15,292
60 to 89 Days
Summary of past due and non-accrual loans
Past Due	1,334	11,623
90 Days or More
Summary of past due and non-accrual loans
Past Due	15,906	12,182
Residential | 1-4 family
Summary of past due and non-accrual loans
Past Due	21,407	20,654
Loans on Non-accrual	9,596	10,610
Residential | 1-4 family | 30 to 59 Days
Summary of past due and non-accrual loans
Past Due	14,030	9,364
Residential | 1-4 family | 60 to 89 Days
Summary of past due and non-accrual loans
Past Due	596	5,622
Residential | 1-4 family | 90 Days or More
Summary of past due and non-accrual loans
Past Due	6,781	5,668
Residential | Second mortgages and equity lines of credit
Summary of past due and non-accrual loans
Past Due	1,154	1,255
Loans on Non-accrual	1,484	1,561
Residential | Second mortgages and equity lines of credit | 30 to 59 Days
Summary of past due and non-accrual loans
Past Due	389	418
Residential | Second mortgages and equity lines of credit | 60 to 89 Days
Summary of past due and non-accrual loans
Past Due	103	77
Residential | Second mortgages and equity lines of credit | 90 Days or More
Summary of past due and non-accrual loans
Past Due	662	760
Commercial | Commercial real estate
Summary of past due and non-accrual loans
Past Due	4,484	5,182
Loans on Non-accrual	3,732	530
Commercial | Commercial real estate | 30 to 59 Days
Summary of past due and non-accrual loans
Past Due	753	261
Commercial | Commercial real estate | 60 to 89 Days
Summary of past due and non-accrual loans
Past Due		4,730
Commercial | Commercial real estate | 90 Days or More
Summary of past due and non-accrual loans
Past Due	3,731	191
Commercial | Commercial construction
Summary of past due and non-accrual loans
Past Due	1,895	1,960
Loans on Non-accrual	10,939	11,244
Commercial | Commercial construction | 90 Days or More
Summary of past due and non-accrual loans
Past Due	1,895	1,960
Commercial | Commercial and industrial
Summary of past due and non-accrual loans
Past Due	5,057	5,855
Loans on Non-accrual	5,237	5,831
Commercial | Commercial and industrial | 30 to 59 Days
Summary of past due and non-accrual loans
Past Due	2,548	2,000
Commercial | Commercial and industrial | 60 to 89 Days
Summary of past due and non-accrual loans
Past Due	120	722
Commercial | Commercial and industrial | 90 Days or More
Summary of past due and non-accrual loans
Past Due	2,389	3,133
Consumer loans | Auto
Summary of past due and non-accrual loans
Past Due	3,792	4,093
Loans on Non-accrual	597	529
Consumer loans | Auto | 30 to 59 Days
Summary of past due and non-accrual loans
Past Due	2,858	3,180
Consumer loans | Auto | 60 to 89 Days
Summary of past due and non-accrual loans
Past Due	490	456
Consumer loans | Auto | 90 Days or More
Summary of past due and non-accrual loans
Past Due	444	457
Consumer loans | Personal
Summary of past due and non-accrual loans
Past Due	99	98
Loans on Non-accrual	11	16
Consumer loans | Personal | 30 to 59 Days
Summary of past due and non-accrual loans
Past Due	70	69
Consumer loans | Personal | 60 to 89 Days
Summary of past due and non-accrual loans
Past Due	25	16
Consumer loans | Personal | 90 Days or More
Summary of past due and non-accrual loans
Past Due	$ 4	$ 13