EMPLOYEE BENEFIT PLANS Table (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Pension Plans (the pension plan, the excess pension plan and the SERP) [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4,080	$ 3,904	$ 8,160	$ 7,808
Interest cost	1,259	1,003	2,518	2,006
Expected return on assets	(1,134)	(979)	(2,268)	(1,958)
Amortization of prior service credit	(10)	(4)	(20)	(8)
Amortization of net loss	518	348	1,036	696
Net periodic benefit cost before disposition charge			9,426	8,544
Disposition charge (b)			180	0
Net periodic benefit cost	4,713	4,272	9,606	8,544
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	293	315	586	630
Interest cost	235	244	470	488
Expected return on assets	0	0	0	0
Amortization of prior service credit	(50)	0	(100)	0
Amortization of net loss	52	35	104	70
Net periodic benefit cost before disposition charge			1,060	1,188
Disposition charge (b)			0	0
Net periodic benefit cost	$ 530	$ 594	$ 1,060	$ 1,188