BENEFIT PLANS - Net Periodic Benefit (Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Retirement Benefits [Abstract]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	223	221	446	221
Expected return on plan assets	(357)	(325)	(714)	(325)
Net periodic benefit (income) cost	$ (134)	$ (104)	$ (268)	$ (104)