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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)
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12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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| Provisions for depreciation | |||
| Depreciation | $ 15,112,000 | $ 15,975,000 | $ 15,874,000 |
| Impairment of long-lived assets | |||
| Asset impairment, routing and scheduling initiative | $ 2,900,000 | ||
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Buildings
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| EQUIPMENT AND PROPERTY | |||
| Useful lives of the assets, minimum (in years) | 10 | ||
| Useful lives of the assets, maximum (in years) | 40 | ||
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Furniture, fixtures, and operating equipment
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| EQUIPMENT AND PROPERTY | |||
| Useful lives of the assets, minimum (in years) | 2 | ||
| Useful lives of the assets, maximum (in years) | 10 | ||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. No definition available.
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| X | ||||||||||
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- Definition
The minimum useful life of long lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. No definition available.
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