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INTANGIBLE ASSETS AND OTHER LONG-TERM ASSETS Table 1 (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Intangible Assets [Line Items]    
Cost $ 198,975 $ 128,925
Accumulated Amortization (86,964) (70,255)
Customer relationships    
Intangible Assets [Line Items]    
Cost 196,616 126,566
Accumulated Amortization (86,370) (69,711)
Other    
Intangible Assets [Line Items]    
Cost 2,359 2,359
Accumulated Amortization $ (594) $ (544)
Minimum [Member]    
Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 10 years  
Maximum [Member]    
Intangible Assets [Line Items]    
Finite-Lived Intangible Asset, Useful Life 47 years