EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Supplemental Employee Retirement Plan [Member]
Net periodic pension cost
Service cost	$ 99	$ 112
Interest cost	131	122
Recognized net actuarial loss	61	140
Net period benefit cost	291	374
Other Postretirement Benefit Plan
Net periodic pension cost
Service cost	12	12
Interest cost	37	33
Recognized net actuarial loss	6	13
Amortization of prior service credit	(6)	(6)
Net period benefit cost	$ 49	$ 52