Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-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

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-Section S99

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-Subparagraph (SX 210.5-02.14)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business 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

-Subparagraph (b)

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-Section S99

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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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

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-Name Regulation S-X (SX)

-Number 210

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Property and Equipment, Net (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 406,850us-gaap_PropertyPlantAndEquipmentGross	$ 221,865us-gaap_PropertyPlantAndEquipmentGross
Less: Accumulated depreciation and amortization	134,824	58,001
Property and equipment, net	272,026us-gaap_PropertyPlantAndEquipmentNet	163,864us-gaap_PropertyPlantAndEquipmentNet
Depreciation and amortization expenses	71,906us-gaap_Depreciation	38,453us-gaap_Depreciation	14,768us-gaap_Depreciation
Computer equipment and application software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	276,078	149,877
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	88,036	46,471
Office building related facility and machines [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	27,988	14,022
Furniture and vehicles [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	8,656	4,672
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,092	1,354
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 0	$ 5,469