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Taxation - Summary of Aggregate Amount and Per Share Effect of Tax Holiday (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Tax Disclosure [Abstract] |  |  |
Aggregate dollar effect | $ 2,784 us-gaap_IncomeTaxHolidayAggregateDollarAmount | $ 4,638 us-gaap_IncomeTaxHolidayAggregateDollarAmount | $ 2,073 us-gaap_IncomeTaxHolidayAggregateDollarAmount
Per share effect-basic | $ 0.01 xnet_IncomeTaxHolidayIncomeTaxBenefitsPerShareBasic | $ 0.08 xnet_IncomeTaxHolidayIncomeTaxBenefitsPerShareBasic | $ 0.03 xnet_IncomeTaxHolidayIncomeTaxBenefitsPerShareBasic
Per share effect-diluted | $ 0.01 xnet_IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted | $ 0.06 xnet_IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted | $ 0.03 xnet_IncomeTaxHolidayIncomeTaxBenefitsPerShareDiluted

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- Definition The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 11.C) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330215-122817 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 11 -Section C + Details
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- Definition Income Tax Holiday, Income Tax Benefits Per Share Basic + References No definition available. + Details
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- Definition Income Tax Holiday, Income Tax Benefits Per Share Diluted + References No definition available. + Details
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