EMPLOYEE BENEFIT PLANS - Narrative 1 (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Supplemental Executive Retirement Plan ("SERP") [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ (1.0)
Defined benefit pension plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ (4.1)