LOANS - Summary of loans by modified as troubled debt restructurings of payment default (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($) loan	Jun. 30, 2019 USD ($) loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Loans | loan	11	12
Recorded Investment | $	$ 15,337	$ 4,702
Commercial financial and agriculture
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Loans | loan	2	3
Recorded Investment | $	$ 254	$ 782
Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Loans | loan	9	7
Recorded Investment | $	$ 15,083	$ 3,735
Consumer real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of Loans | loan		2
Recorded Investment | $		$ 185