Certain Risks and Concentration - Additional Information (Detail)
$ in Thousands |
12 Months Ended |
|
Dec. 31, 2015
USD ($)
Customer
|
Dec. 31, 2014
USD ($)
Customer
|
Dec. 31, 2013
Customer
|
| Concentration Risk [Line Items] |
|
|
|
| Maximum foreign ownership in internet information provider or other value-added telecommunication service provider's business allowed under PRC laws and regulations |
50.00%
|
|
|
| Retained earnings and distributable reserves |
$ (12,593)
|
$ 574
|
|
| Number of top customers accounted for net revenues | Customer |
10
|
10
|
10
|
| Net revenues [Member] | Customer concentration risk [Member] |
|
|
|
| Concentration Risk [Line Items] |
|
|
|
| Percentage of net revenues accounted from customers |
26.00%
|
16.00%
|
14.00%
|
| Shenzhen Xunlei Networking Technologies, Co., Ltd [Member] |
|
|
|
| Concentration Risk [Line Items] |
|
|
|
| operating contract term |
10 years
|
|
|
| Variable Interest Entity, Primary Beneficiary [Member] |
|
|
|
| Concentration Risk [Line Items] |
|
|
|
| Retained earnings and distributable reserves |
$ 25,512
|
|
|
| Variable Interest Entity, Not Primary Beneficiary [Member] |
|
|
|
| Concentration Risk [Line Items] |
|
|
|
| Retained earnings and distributable reserves |
|
$ 34,210
|
|