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ACQUISITIONS (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Acquisitions      
Annual sales at the date of acquisition $ 657,900us-gaap_SalesRevenueGoodsNet $ 685,062us-gaap_SalesRevenueGoodsNet  
Immaterial Acquisitions [Member] [Domain]      
Acquisitions      
Annual sales at the date of acquisition     $ 30,000us-gaap_SalesRevenueGoodsNet
/ us-gaap_BusinessAcquisitionAxis
= us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember