FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Long-term debt	$ 1,080,000	$ 1,080,000
Reported Value Measurement [Member]
Assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Long-term debt	1,080,000	1,080,000
Fair value
Assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3)
Long-term Debt, Fair Value	$ 1,068,456	$ 1,058,396