EMPLOYEE BENEFIT PLANS - Changes in Benefit Obligations and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation at beginning of year	$ 1,174	$ 1,573
Initial adoption of new plan	0	0
Service cost with interest to end of year	63	78	$ 67
Interest cost	39	44	46
Participant contributions	35	40
Benefits paid	(162)	(136)
Actuarial gain	(73)	(425)
Benefit obligation at end of year	1,076	1,174	1,573
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets at beginning of year	0	0
Employer (reimbursement)/contributions	127	96
Participant contributions	35	40
Benefits paid	(162)	(136)
Fair value of plan assets at end of year	$ 0	$ 0	$ 0