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v3.23.1

Significant Accounting Policies - Additional Information (Detail) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Cash and cash equivalents maturity period, maximum | 90 days |
Short-term lease exception - Lease term | 12 months | 12 months

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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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- 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_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Cash and cash equivalents criteria maturity period. + References No definition available. + Details
Name: | wt_CashAndCashEquivalentsCriteriaMaturityPeriod
Namespace Prefix: | wt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration