This element represents the aggregate cost of investments accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 12

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of the entity's equity method investment which has been sold.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of deposits held by the entity for a related party (entity, shareholder, employee).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Acquisition Closing Effective Date

+ References

No definition available.

+ Details

Name:	xnet_AcquisitionClosingEffectiveDate
Namespace Prefix:	xnet_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Purchase agreement contingent penalty payment.

+ References

No definition available.

+ Details

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Namespace Prefix:	xnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Repayment of deposit to related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	xnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Subsequent Events - Additional Information (Detail)	1 Months Ended	12 Months Ended		1 Months Ended			1 Months Ended	0 Months Ended		0 Months Ended			1 Months Ended
Subsequent Events - Additional Information (Detail)	Nov. 30, 2014	Dec. 31, 2014 11.2 Capital I, L.P [Member]	Dec. 31, 2014 Suzhou Heidisi Network Technology Co., Ltd [Member]	Jan. 31, 2015 Subsequent Event [Member]	Jan. 31, 2015 Subsequent Event [Member] 11.2 Capital I, L.P [Member] USD ($)	Feb. 28, 2015 Subsequent Event [Member] Suzhou Heidisi Network Technology Co., Ltd [Member] USD ($)	Mar. 31, 2015 Subsequent Event [Member] Xiamen Diensi Network Technology Co., Ltd [Member] USD ($)	Mar. 31, 2015 Subsequent Event [Member] Shenzhen Xunlei Kankan Information Technologies Co., Ltd. [Member] CNY	Mar. 31, 2015 Subsequent Event [Member] Shenzhen Xunlei Kankan Information Technologies Co., Ltd. [Member]	Mar. 31, 2015 Subsequent Event [Member] Nesound International Media Corp., Ltd [Member] CNY	Apr. 20, 2015 Subsequent Event [Member] Nesound International Media Corp., Ltd [Member] CNY	Mar. 31, 2015 Subsequent Event [Member] Nesound International Media Corp., Ltd [Member] Shenzhen Xunlei Kankan Information Technologies Co., Ltd. [Member] CNY	Mar. 31, 2015 Subsequent Event [Member] Restricted shares [Member]
Subsequent Event [Line Items]
Shares granted to employees													1,769,000
Common stock issued for future exercise of share options or vesting of restricted shares	10,000,000			10,991,120
Consideration paid for acquired equity interests					$ 1,000,000	$ 647,000	$ 2,000,000
Percentage of acquired equity interests					2.24%	19.90%	15.00%		100.00%
Closing date of acquisition		Jan. 15, 2015	Mar. 11, 2015
Partial consideration paid for acquired equity interest							1,200,000
Cash consideration from disposal of business								130,000,000
Deposit											26,000,000
Amount of penalty liable to pay												52,000,000
Repayment of deposits										26,000,000