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Non-controlling interest - Additional Information (Detail)
Feb. 28, 2010
USD ($)
Feb. 28, 2010
CNY (¥)
Noncontrolling Interest [Line Items]    
Minority interest owned by shareholder, amount | $ $ 439,000  
Xunlei Games Development (Shenzhen) Co., Ltd. [Member]    
Noncontrolling Interest [Line Items]    
Percentage of equity interest owned by parent 70.00% 70.00%
Minority interest owned by shareholder, percent 30.00% 30.00%
Minority interest owned by shareholder, amount | ¥   ¥ 3,000,000