BENEFIT PLANS (Employer Contributions for Plan) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Employer contribution	$ 4,855,000	$ 4,509,000	$ 4,906,000
Employer Contributions	41,546,000	39,087,000
2014 (estimated)	15,539,000
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Employer Contributions	6,258,000	6,834,000	7,176,000
2014 (estimated)	$ 9,431,000