Year of expiration or mandatory redemption of the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction, in CCYY format.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586

+ Details

Name:	us-gaap_DebtConversionConvertedInstrumentExpirationOrDueDateYear
Namespace Prefix:	us-gaap_
Data Type:	us-types:gYearListItemType
Balance Type:	na
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

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

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Definition

The addition amount of loan with zero interest rates.

+ References

No definition available.

+ Details

Name:	xnet_AdditionalLoansReceivableInterestFree
Namespace Prefix:	xnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Agreement Extension Period

+ References

No definition available.

+ Details

Name:	xnet_AgreementExtensionPeriod
Namespace Prefix:	xnet_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

States the notice requirement (for example, 30 to 60 days) is required to terminate its agreement.

+ References

No definition available.

+ Details

Name:	xnet_AgreementTerminateNoticePeriod
Namespace Prefix:	xnet_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The increase (decrease) of registered capital.

+ References

No definition available.

+ Details

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

- Definition

Amount of loan with zero interest rates.

+ References

No definition available.

+ Details

Name:	xnet_LoansReceivableInterestFree
Namespace Prefix:	xnet_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Long-term pre-tax operating income as a percentage of net sales.

+ References

No definition available.

+ Details

Name:	xnet_LongtermPretaxOperatingMarginPercent
Namespace Prefix:	xnet_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

How many years each power of attorney will remain in force.

+ References

No definition available.

+ Details

Name:	xnet_PrincipalAgreementOfVariableInterestEntitiesTermOfAgreements
Namespace Prefix:	xnet_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Agreement Expiration Date

+ References

No definition available.

+ Details

Name:	xnet_RelatedPartyAgreementExpirationDate
Namespace Prefix:	xnet_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_ConsolidatedEntitiesAxis=xnet_GiganologyShenzhenCoLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_ShareholderServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=xnet_AgreementBetweenGiganologyShenzhenAndMrSeanShenglongZouMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=xnet_AgreementBetweenGiganologyShenzhenAndShareholdersOfShenzhenXunleiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=xnet_AgreementBetweenGiganologyShenzhenAndShenzhenXunleiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=xnet_CallOptionAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RestatementAxis=srt_RestatementAdjustmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=xnet_ExclusiveTechnologySupportAndServicesAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=xnet_ExclusiveTechnologyConsultingAndTrainingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=xnet_SoftwareAndProprietaryTechnologyLicenseContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Organization and nature of operations - Additional Information (Details) ¥ / shares in Units, ¥ in Millions	1 Months Ended	12 Months Ended
	May 31, 2011 CNY (¥)	Dec. 31, 2019 CNY (¥) ¥ / shares	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 USD ($)	Jan. 01, 2019 USD ($)
Variable Interest Entity [Line Items]
Number of year's power of attorney retained		10 years	10 years
Percentage of pre-tax operating profit		80.00%	80.00%
Right-of-use assets				$ 11,819,000		$ 8,747,000
Lease liabilities						$ 8,825
Giganology Shenzhen
Variable Interest Entity [Line Items]
Termination of agreement, notice period		30 days	30 days
Automated extended period of agreement		10 years	10 years
Agreement expiration date		2022	2022
Shareholder Service [Member]
Variable Interest Entity [Line Items]
Service fees payable			$ 811,000	$ 825,000	$ 1,155,000
Agreement between Giganology Shenzhen and Mr. Sean Shenglong Zou [Member]
Variable Interest Entity [Line Items]
Additional interest-free loans \| ¥		¥ 20
Increase in registered capital \| ¥		30
Agreement between Giganology Shenzhen and Shareholders of Shenzhen Xunlei [Member]
Variable Interest Entity [Line Items]
Interest-free loans \| ¥		¥ 9
Agreement between Giganology Shenzhen and Shenzhen Xunlei [Member]
Variable Interest Entity [Line Items]
Increase in registered capital \| ¥	¥ 20
Term agreement expiration year		2016	2016
Call Option Agreement [Member] \| Giganology Shenzhen
Variable Interest Entity [Line Items]
Agreement expiration date		2022	2022
Outstanding share, purchase price per share \| ¥ / shares		¥ 1
Accounting Standards Update 2016-02 [Member] \| Restatement Adjustment [Member]
Variable Interest Entity [Line Items]
Right-of-use assets							$ 11,800,000
Lease liabilities							$ 11,400,000
Exclusive Technology Support and Services Agreement [Member]
Variable Interest Entity [Line Items]
Percentage of pre-tax operating profit		20.00%	20.00%
Exclusive Technology Support and Services Agreement [Member] \| Giganology Shenzhen
Variable Interest Entity [Line Items]
Term agreement expiration year		2025	2025
Exclusive Technology Consulting and Training Agreement [Member]
Variable Interest Entity [Line Items]
Percentage of pre-tax operating profit		20.00%	20.00%
Software and Proprietary Technology License Contract [Member]
Variable Interest Entity [Line Items]
Percentage of pre-tax operating profit		40.00%	40.00%