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Summary of Significant Accounting Policies - Trademarks and Other Intangible Assets (Details) | Dec. 31, 2024
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Minimum |
Summary Of Significant Accounting Policies [Line Items] |
Estimated useful life of finite-lived intangible asset (in years) | 3 years
Maximum |
Summary Of Significant Accounting Policies [Line Items] |
Estimated useful life of finite-lived intangible asset (in years) | 18 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |