EMPLOYEE BENEFIT PLANS (Details 4) - Pension Plans, Defined Benefit [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
COMPONENTS OF NET PERIODIC BENEFIT COST:
Service cost	$ 1,468	$ 1,557	$ 1,601
Interest cost	1,430	1,341	1,368
Expected return on plan assets	(2,275)	(2,130)	(1,991)
Amortization of prior year service cost	0	0	(19)
Special termination benefit liability	0	0	376
Recognized net actuarial loss	1,333	1,386	1,181
Net periodic pension cost	$ 1,956	$ 2,154	$ 2,516