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Accounts receivable, net - Schedule of Allowance for Doubtful Accounts (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounts receivable, net |  |  |
Balance at beginning of the year | $ 7,604,000 | $ 7,709,000 | $ 31,000
Additions | 1,137,000 | 19,000 | 7,680,000
Exchange difference | 588,000 | (124,000) | (2,000)
Balance at end of the year | $ 9,329,000 | $ 7,604,000 | $ 7,709,000

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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Represents the mount of addition in the allowance for doubtful accounts during the reporting period. + References No definition available. + Details
Name: | xnet_AllowanceForDoubtfulAccountsReceivableAdditions
Namespace Prefix: | xnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The amount of foreign exchange gain or loss on allowance for doubtful accounts receivable exchange adjustment. + References No definition available. + Details
Name: | xnet_AllowanceForDoubtfulAccountsReceivableExchangeAdjustment
Namespace Prefix: | xnet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration