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Intangible Assets, Net - Schedule of Intangible Assets (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended			3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Amount of revenue generated	$ 182,887us-gaap_Revenues	$ 180,244us-gaap_Revenues	$ 148,200us-gaap_Revenues
Content Copyrights [Member]
Finite-Lived Intangible Assets [Line Items]
Net book value acquired from barter transactions	1,401us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember	1,987us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember
Online game licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Amount of revenue generated				$ 27us-gaap_Revenues / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember	$ 303us-gaap_Revenues / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember

X

- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

+ Details

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X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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X

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