EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Supplemental Employee Retirement Plan [Member]
Net periodic pension cost
Service cost	$ 112	$ 84	$ 335	$ 252
Interest cost	122	113	366	338
Recognized net actuarial loss	140	61	420	185
Net period benefit cost	374	258	1,121	775
Other Postretirement Benefit Plan
Net periodic pension cost
Service cost	12	13	35	39
Interest cost	33	36	99	108
Recognized net actuarial loss	12	10	39	30
Amortization of prior service credit	(6)	(6)	(18)	(18)
Net period benefit cost	$ 51	$ 53	$ 155	$ 159