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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2011
D
|
Dec. 31, 2010
|
|
| Cash and cash equivalents | ||
| Maturity period from date of purchase, short-term investments classified as cash equivalents, less than (in days) | 91 | |
| Property and equipment | ||
| Net book value | $ 259,588 | $ 267,928 |
|
Buildings and leasehold improvements
|
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| Property and equipment | ||
| Estimated Useful Lives, minimum (in years) | 3 | |
| Estimated Useful Lives, maximum (in years) | 39 | |
|
Computer equipment and capitalized software
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||
| Property and equipment | ||
| Estimated Useful Lives, minimum (in years) | 2 | |
| Estimated Useful Lives, maximum (in years) | 3 | |
|
Capitalized internal use software
|
||
| Property and equipment | ||
| Net book value | $ 29,200 | $ 33,900 |
|
Furniture and other equipment
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| Property and equipment | ||
| Estimated Useful Lives, minimum (in years) | 3 | |
| Estimated Useful Lives, maximum (in years) | 10 |