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INCOME TAXES - Schedule of Reconciliation of Unrecognized Tax Benefits (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at the beginning of the year $ 25,500us-gaap_UnrecognizedTaxBenefits $ 25,900us-gaap_UnrecognizedTaxBenefits $ 26,200us-gaap_UnrecognizedTaxBenefits
Tax positions related to current and prior years:      
Additions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 1,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions 100us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Reductions (100)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions (100)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions
Expiration of statutes of limitations (300)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (1,300)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations (400)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Balance at the end of the year $ 25,100us-gaap_UnrecognizedTaxBenefits $ 25,500us-gaap_UnrecognizedTaxBenefits $ 25,900us-gaap_UnrecognizedTaxBenefits