EMPLOYEE BENEFIT PLANS Table (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Pension Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 1,919	$ 2,012	$ 5,757	$ 6,036
Interest cost	1,097	1,056	3,291	3,169
Expected return on assets	(1,254)	(1,144)	(3,762)	(3,432)
Amortization of prior service credit	(516)	(516)	(1,547)	(1,548)
Amortization of net loss (gain)	461	197	1,383	(18)
Other (b)	0	175	0	(39)
Net periodic benefit cost (income)	1,707	1,780	5,122	4,168
Other Postretirement Benefit Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	118	94	354	282
Interest cost	111	93	334	279
Expected return on assets	0	0	0	0
Amortization of prior service credit	(285)	(286)	(857)	(858)
Amortization of net loss (gain)	67	29	201	85
Other (b)	0	0	0	0
Net periodic benefit cost (income)	$ 11	$ (70)	$ 32	$ (212)