FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK - Schedule of Net Amount Expensed (Recovered) Through Noninterest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Off-balance sheet credit exposures expense	$ 39	$ 182	$ 32