v2.4.1.9

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
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Dec. 31, 2014 | Dec. 31, 2013
Accounting Policies [Abstract] |  |
Maturity period from date of purchase, short-term investments classified as cash equivalents, less than (in days) | 91 days |
Property and equipment |  |
Net book value | $ 302,459 us-gaap_PropertyPlantAndEquipmentNet | $ 293,964 us-gaap_PropertyPlantAndEquipmentNet
Buildings and leasehold improvements | Minimum |  |
Property and equipment |  |
Estimated useful lives, minimum (in years) | 3 years |
Buildings and leasehold improvements | Maximum |  |
Property and equipment |  |
Estimated useful lives, minimum (in years) | 39 years |
Computer equipment and capitalized software | Minimum |  |
Property and equipment |  |
Estimated useful lives, minimum (in years) | 2 years |
Computer equipment and capitalized software | Maximum |  |
Property and equipment |  |
Estimated useful lives, minimum (in years) | 3 years |
Furniture and other equipment | Minimum |  |
Property and equipment |  |
Estimated useful lives, minimum (in years) | 3 years |
Furniture and other equipment | Maximum |  |
Property and equipment |  |
Estimated useful lives, minimum (in years) | 12 years |
Software and Software Development Costs |  |
Property and equipment |  |
Net book value | $ 36,900 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | $ 30,900 us-gaap_PropertyPlantAndEquipmentNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember

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- Definition Short-term investments must have a maturity, at the date of purchase, of less than this specified period in order to be classified as cash equivalents. + References No definition available. + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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