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EMPLOYEE BENEFIT PLANS (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]      
Employee benefits plans expense $ 2.3us-gaap_PensionAndOtherPostretirementBenefitExpense $ 2.1us-gaap_PensionAndOtherPostretirementBenefitExpense $ 1.8us-gaap_PensionAndOtherPostretirementBenefitExpense