Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details 3)

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EMPLOYEE BENEFIT PLANS (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Amounts recognized in the statement of financial position    
Noncurrent liabilities $ (29,558)us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent $ 6,422us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Amounts recognized in accumulated other comprehensive income    
Net actuarial loss $ 98,462us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax $ 56,742us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax