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Short-Term Investments - Schedule of Short-Term Investments (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Investments [Line Items]
Short-term investments	$ 29,427us-gaap_ShortTermInvestments	$ 40,993us-gaap_ShortTermInvestments
Time deposits [Member]
Schedule of Investments [Line Items]
Short-term investments		9,695us-gaap_ShortTermInvestments / us-gaap_CashAndCashEquivalentsAxis = us-gaap_BankTimeDepositsMember
Investments in financial instruments [Member]
Schedule of Investments [Line Items]
Short-term investments	$ 29,427us-gaap_ShortTermInvestments / us-gaap_InvestmentTypeAxis = xnet_FinancialInstrumentsMember	$ 31,298us-gaap_ShortTermInvestments / us-gaap_InvestmentTypeAxis = xnet_FinancialInstrumentsMember

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- Definition

Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph g

-Article 7

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