LOANS - Detail of Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) loan	Jun. 30, 2020 USD ($) loan	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Financing Receivable, Modifications [Line Items]
Outstanding Recorded Investment Pre-Modification	$ 291	$ 230	$ 291	$ 980
Outstanding Recorded Investment Post-Modification	$ 281	$ 230	$ 281	$ 974
Number of Loans	3	2	3	5
Commercial financial and agriculture
Financing Receivable, Modifications [Line Items]
Outstanding Recorded Investment Pre-Modification		$ 35		$ 47
Outstanding Recorded Investment Post-Modification		$ 35		$ 46
Number of Loans		1		2
Commercial real estate
Financing Receivable, Modifications [Line Items]
Outstanding Recorded Investment Pre-Modification	$ 237	$ 195	$ 237	$ 933
Outstanding Recorded Investment Post-Modification	$ 237	$ 195	$ 237	$ 928
Number of Loans	2	1	2	3
Consumer real estate
Financing Receivable, Modifications [Line Items]
Outstanding Recorded Investment Pre-Modification	$ 54		$ 54
Outstanding Recorded Investment Post-Modification	$ 44		$ 44
Number of Loans	1		1