EMPLOYEE BENEFIT PLANS Table (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 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
Interest cost	1,259	1,003
Expected return on assets	(1,134)	(979)
Amortization of prior service credit	(10)	(4)
Amortization of net loss	518	348
Net periodic benefit cost before disposition charge	4,713	4,272
Disposition charge (b)	180	0
Net periodic benefit cost	4,893	4,272
Other Postretirement Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	293	315
Interest cost	235	244
Expected return on assets	0	0
Amortization of prior service credit	(50)	0
Amortization of net loss	52	35
Net periodic benefit cost before disposition charge	530	594
Disposition charge (b)	0	0
Net periodic benefit cost	$ 530	$ 594