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Intangible Assets, Net - Schedule of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Finite-Lived Intangible Assets [Line Items] |  |
Cost | $ 160,506 us-gaap_FiniteLivedIntangibleAssetsGross | $ 123,167 us-gaap_FiniteLivedIntangibleAssetsGross
Amortization | (123,588)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (94,383)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Impairment | (808)xnet_FiniteLivedIntangibleAssetsAccumulatedImpairment | (808)xnet_FiniteLivedIntangibleAssetsAccumulatedImpairment
Net book value | 36,110 us-gaap_FiniteLivedIntangibleAssetsNet | 27,976 us-gaap_FiniteLivedIntangibleAssetsNet
Less: Content copyrights, current portion | (16,013)us-gaap_IntangibleAssetsCurrent | (16,018)us-gaap_IntangibleAssetsCurrent
Net book value other than copyrights related to content, current portion | 20,097 us-gaap_IntangibleAssetsNetExcludingGoodwill | 11,958 us-gaap_IntangibleAssetsNetExcludingGoodwill
Content Copyrights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 137,470 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember | 110,346 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember
Amortization | (116,511)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember | (89,396)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember
Net book value | 20,959 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember | 20,950 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CopyrightsMember
Exclusive [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 106,942 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_ExclusiveMember | 84,313 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_ExclusiveMember
Amortization | (93,172)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_ExclusiveMember | (67,487)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_ExclusiveMember
Net book value | 13,770 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_ExclusiveMember | 16,826 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_ExclusiveMember
Non-exclusive [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 30,528 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_NonexclusiveMember | 26,033 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_NonexclusiveMember
Amortization | (23,339)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_NonexclusiveMember | (21,909)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_NonexclusiveMember
Net book value | 7,189 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_NonexclusiveMember | 4,124 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_NonexclusiveMember
Land use right [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 5,279 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_LandUseRightMember | 5,298 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_LandUseRightMember
Amortization | (253)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_LandUseRightMember | (78)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_LandUseRightMember
Net book value | 5,026 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_LandUseRightMember | 5,220 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_LandUseRightMember
Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 6,168 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |
Amortization | (167)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |
Net book value | 6,001 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TrademarksMember |
Non-compete agreement [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 1,502 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember |
Amortization | (252)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember |
Net book value | 1,250 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember |
Technology (including right-to-use) [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 2,399 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |
Amortization | (100)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |
Net book value | 2,299 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember |
Acquired computer software [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 1,468 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_AcquiredComputerSoftwareMember | 1,284 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_AcquiredComputerSoftwareMember
Amortization | (1,141)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_AcquiredComputerSoftwareMember | (1,061)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_AcquiredComputerSoftwareMember
Net book value | 327 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_AcquiredComputerSoftwareMember | 223 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_AcquiredComputerSoftwareMember
Internal use software development costs [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 716 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 718 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Amortization | (537)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | (395)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Net book value | 179 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember | 323 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Online game licenses [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 5,304 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember | 5,321 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember
Amortization | (4,478)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember | (3,343)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember
Impairment | (808)xnet_FiniteLivedIntangibleAssetsAccumulatedImpairment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember | (808)xnet_FiniteLivedIntangibleAssetsAccumulatedImpairment / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember
Net book value | 18 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember | 1,170 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = xnet_OnlineGameLicensesMember
Domain name [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Cost | 200 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InternetDomainNamesMember | 200 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InternetDomainNamesMember
Amortization | (149)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InternetDomainNamesMember | (110)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InternetDomainNamesMember
Net book value | $ 51 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InternetDomainNamesMember | $ 90 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_InternetDomainNamesMember

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