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Non-Controlling Interest - Additional Information (Detail) (Xunlei Games Development (Shenzhen) Co., Ltd. [Member])
In Thousands, unless otherwise specified
Feb. 28, 2010
USD ($)
Feb. 28, 2010
CNY
Noncontrolling Interest [Line Items]    
Percentage of equity interest owned by parent 70.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= xnet_XunleiGamesDevelopmentShenzhenCoLtdMember
70.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ dei_LegalEntityAxis
= xnet_XunleiGamesDevelopmentShenzhenCoLtdMember
Minority interest owned by shareholder, percent 30.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= xnet_XunleiGamesDevelopmentShenzhenCoLtdMember
30.00%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
/ dei_LegalEntityAxis
= xnet_XunleiGamesDevelopmentShenzhenCoLtdMember
Minority interest owned by shareholder, amount $ 439us-gaap_MinorityInterestInJointVentures
/ dei_LegalEntityAxis
= xnet_XunleiGamesDevelopmentShenzhenCoLtdMember
3,000us-gaap_MinorityInterestInJointVentures
/ dei_LegalEntityAxis
= xnet_XunleiGamesDevelopmentShenzhenCoLtdMember