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Revenue - Narrative (Details) | 12 Months Ended
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Dec. 31, 2020 segment RevenueModel
Revenue Recognition [Line Items] |
Number of operating segments | segment | 2
Number of revenue models used for company licenses | RevenueModel | 3
Right to cancel subscription, period | 30 days
Maximum |
Revenue Recognition [Line Items] |
Practical expedient, timing of revenue recognition differs from the timing of cash collection, period | 1 year
Revenue recognition practical expedient amortization period | 1 year
Practical expedient revenue expected to be recognized from unsatisfied performance obligations, duration | 1 year

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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599 + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Remaining duration of performance obligation for which optional exemption was applied not to disclose amount of transaction price allocated to and timing of revenue recognition for remaining performance obligation, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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- Definition Number of revenue models used for company licenses. + References No definition available. + Details
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Namespace Prefix: | xper_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Practical expedient timing of revenue recognition differs from the timing of cash collection, period. + References No definition available. + Details
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Namespace Prefix: | xper_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Revenue recognition. + References No definition available. + Details
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Namespace Prefix: | xper_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue recognition practical expedient amortization period. + References No definition available. + Details
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Namespace Prefix: | xper_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Right to cancel subscription, period. + References No definition available. + Details
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Namespace Prefix: | xper_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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