LONG-TERM DEBT (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Dec. 21, 2012
Debt Instrument [Line Items]
Total long-term debt	$ 580,000,000	$ 595,844,000
Less current maturities	0	(15,844,000)
Long-term debt, net of current maturities	580,000,000	580,000,000
Senior Notes | 7% Senior Notes due January 2013
Debt Instrument [Line Items]
Total long-term debt	0	15,844,000
Stated rate	7.00%	7.00%
Senior Notes | 4.75% Senior Notes due December 2022
Debt Instrument [Line Items]
Debt Instrument, Face Amount			500,000,000
Total long-term debt	500,000,000	500,000,000
Stated rate	4.75%	4.75%	4.75%
Bonds | 5% New York City Industrial Development Agency Liberty Bonds due September 2035
Debt Instrument [Line Items]
Total long-term debt	80,000,000	80,000,000
Stated rate	5.00%	5.00%
Revolving Credit Facility
Line of Credit Facility [Abstract]
Line of credit, maximum borrowing capacity			300,000,000
Line of credit, amount outstanding	$ 0	$ 0
Line of Credit Facility, Commitment Fee Percentage	0.25%