FAIR VALUES OF ASSETS AND LIABILITIES - Quantitative Information About Recurring Level 3 Fair Value Measurements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Municipal securities
Quantitative Information About Recurring Fair Value Measurements [Line Items]
Fair Value	$ 20,126	$ 10,345
Valuation Technique	Discounted cash flow	Discounted cash flow
Significant Unobservable Inputs	Discount rate	Discount rate
Range of Inputs, Minimum	0.50%	1.50%
Range of Inputs, Maximum	2.45%	4.40%
Trust Preferred Securities [Member]
Quantitative Information About Recurring Fair Value Measurements [Line Items]
Fair Value	$ 235	$ 408
Valuation Technique	Discounted cash flow	Discounted cash flow
Significant Unobservable Inputs	Discount rate	Discount rate
Range of Inputs, Minimum	1.08%	2.73%
Range of Inputs, Maximum	2.48%	4.15%