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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 |

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