LOANS AND ALLOWANCE FOR LOAN LOSSES - Past due (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Total Past Due	$ 11,141	$ 7,631
Current - 29 Days Past Due	692,899	640,101
Total Loans	704,040	647,732	$ 631,185
90 Days or Greater Past Due and Still Accruing Interest	542	100
Financing Receivables, 30 to 59 Days Past Due [Member]
Total Past Due	3,372	2,022
Financing Receivables, 60 to 89 Days Past Due [Member]
Total Past Due	624	1,494
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due	7,145	4,115
Commercial and Industrial [Member]
Total Past Due	776	26
Current - 29 Days Past Due	99,521	86,686
Total Loans	100,297	86,712	85,738
90 Days or Greater Past Due and Still Accruing Interest	0	0
Commercial and Industrial [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total Past Due	60	0
Commercial and Industrial [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total Past Due	0	26
Commercial and Industrial [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due	716	0
Commercial Real Estate [Member]
Total Past Due	8,097	5,339
Current - 29 Days Past Due	432,998	390,462
Total Loans	441,095	395,801	379,665
90 Days or Greater Past Due and Still Accruing Interest	542	0
Commercial Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total Past Due	2,490	880
Commercial Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total Past Due	242	957
Commercial Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due	5,365	3,502
Residential Real Estate [Member]
Total Past Due	2,246	2,237
Current - 29 Days Past Due	155,293	157,113
Total Loans	157,539	159,350	159,897
90 Days or Greater Past Due and Still Accruing Interest	0	100
Residential Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total Past Due	806	1,118
Residential Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total Past Due	376	506
Residential Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due	1,064	613
Consumer [Member]
Total Past Due	22	29
Current - 29 Days Past Due	5,087	5,840
Total Loans	5,109	5,869	$ 5,885
90 Days or Greater Past Due and Still Accruing Interest	0	0
Consumer [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Total Past Due	16	24
Consumer [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Total Past Due	6	5
Consumer [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Total Past Due	$ 0	$ 0