| **OTHER COMMENTS Asset Retirement Obligations (Details) (USD $)In Thousands, unless otherwise specified** | 12 Months Ended |
|-----------------------------------------------------------------------------------------------------------|-----------------|
||
| **Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]**                                     |            |   |
| Balance at beginning of year                                                                              | $ 11,709        | $ 9,385 |
| Liabilities incurred                                                                                      | 2,585           | 3,252 |
| Liabilities settled (payments)                                                                            | (1,160)         | (879) |
| Accretion expense                                                                                         | 294             | 133 |
| Revisions in estimated cash flows                                                                         | 273             | (474) |
| Currency translation adjustment                                                                           | (1,198)         | 292 |
| Balance at end of year                                                                                    | $ 12,503        | $ 11,709 |

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| - Definition
The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.
+ References
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| - Definition
Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.
+ References
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| - Definition
Amount of the Increase or Decrease in the amount of asset retirement obligations for the period associated with foreign currency translation (to the extent that the entity accounts for the foreign currency effects as a separate component of the change in the liability).
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 22 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
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| - Definition
Amount of asset retirement obligations incurred during the period.
+ References
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| - Definition
Amount of asset retirement obligations settled, or otherwise disposed of, during the period. This may include asset retirement obligations transferred to third parties associated with the sale of a long-lived asset.
+ References
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| - Definition
Amount of the Increase or Decrease in the amount of the asset retirement obligation during the current period for changes in the amount or timing of the estimated cash flows associated with the settlement of the obligation.
+ References
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