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 |