EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 2,100
Defined Benefit Plan, Estimated Future Employer Contributions in Current Fiscal Year	1,200		$ 1,200
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Service Cost	129	$ 74	482	$ 386
Defined Benefit Plan, Interest Cost	1,197	1,230	3,531	3,700
Defined Benefit Plan, Expected Return (Loss) on Plan Assets	(1,372)	(1,396)	(4,109)	(4,184)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	34	35	102	103
Defined Benefit Plan, Amortization of Gain (Loss)	663	762	1,992	2,289
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ 651	$ 705	$ 1,998	$ 2,294