XML 69 R52.htm IDEA: XBRL DOCUMENT v3.25.2

Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Dec. 31, 2024
Fair Value, Recurring [Member]
Assets:
Cash equivalents		$ 114,140	$ 48,336
Total		212,739	134,462
Cash equivalents		114,140	48,336
Non-recurring fair value measurements:
Cash equivalents		114,140	48,336
Fair Value, Recurring [Member] | U.S. treasuries [Member]
Assets:
Financial instruments owned, at fair value		5,549	5,251
Financial instruments owned, at fair value		5,549	5,251
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		5,549	5,251
Fair Value, Recurring [Member] | Equities [Member]
Assets:
Financial instruments owned, at fair value		9,105	8,478
Financial instruments owned, at fair value		9,105	8,478
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		9,105	8,478
Fair Value, Recurring [Member] | Fixed income [Member]
Assets:
Financial instruments owned, at fair value		1,954	1,905
Financial instruments owned, at fair value		1,954	1,905
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		1,954	1,905
Fair Value, Recurring [Member] | Level 1 [Member]
Assets:
Cash equivalents		114,140	48,336
Total		198,925	120,740
Cash equivalents		114,140	48,336
Non-recurring fair value measurements:
Cash equivalents		114,140	48,336
Fair Value, Recurring [Member] | Level 1 [Member] | U.S. treasuries [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | Level 1 [Member] | Equities [Member]
Assets:
Financial instruments owned, at fair value		9,105	8,478
Financial instruments owned, at fair value		9,105	8,478
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		9,105	8,478
Fair Value, Recurring [Member] | Level 1 [Member] | Fixed income [Member]
Assets:
Financial instruments owned, at fair value		1,032	1,019
Financial instruments owned, at fair value		1,032	1,019
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		1,032	1,019
Fair Value, Recurring [Member] | Level 2 [Member]
Assets:
Cash equivalents
Total		12,964	13,035
Cash equivalents
Non-recurring fair value measurements:
Cash equivalents
Fair Value, Recurring [Member] | Level 2 [Member] | U.S. treasuries [Member]
Assets:
Financial instruments owned, at fair value		5,549	5,251
Financial instruments owned, at fair value		5,549	5,251
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		5,549	5,251
Fair Value, Recurring [Member] | Level 2 [Member] | Equities [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | Level 2 [Member] | Fixed income [Member]
Assets:
Financial instruments owned, at fair value		922	886
Financial instruments owned, at fair value		922	886
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		922	886
Fair Value, Recurring [Member] | Level 3 [Member]
Assets:
Cash equivalents
Total		850	687
Cash equivalents
Non-recurring fair value measurements:
Cash equivalents
Fair Value, Recurring [Member] | Level 3 [Member] | U.S. treasuries [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | Level 3 [Member] | Equities [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | Level 3 [Member] | Fixed income [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | ETFs [Member]
Assets:
Financial instruments owned, at fair value		74,648
Financial instruments owned, at fair value		74,648
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		74,648
Fair Value, Recurring [Member] | ETFs [Member] | Level 1 [Member]
Assets:
Financial instruments owned, at fair value		74,648
Financial instruments owned, at fair value		74,648
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		74,648
Fair Value, Recurring [Member] | ETFs [Member] | Level 2 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | ETFs [Member] | Level 3 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | Pass-through GSEs [Member]
Assets:
Financial instruments owned, at fair value		6,493	6,898
Financial instruments owned, at fair value		6,493	6,898
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		6,493	6,898
Fair Value, Recurring [Member] | Pass-through GSEs [Member] | Level 1 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | Pass-through GSEs [Member] | Level 2 [Member]
Assets:
Financial instruments owned, at fair value		6,493	6,898
Financial instruments owned, at fair value		6,493	6,898
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		6,493	6,898
Fair Value, Recurring [Member] | Pass-through GSEs [Member] | Level 3 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | ETFs [Member]
Assets:
Financial instruments owned, at fair value			62,907
Financial instruments owned, at fair value			62,907
Financial instruments owned, at fair value:
Financial instruments owned, at fair value			62,907
Fair Value, Recurring [Member] | ETFs [Member] | Level 1 [Member]
Assets:
Financial instruments owned, at fair value			62,907
Financial instruments owned, at fair value			62,907
Financial instruments owned, at fair value:
Financial instruments owned, at fair value			62,907
Fair Value, Recurring [Member] | ETFs [Member] | Level 2 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Fair Value, Recurring [Member] | ETFs [Member] | Level 3 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Other Investments [Member] | Fair Value, Recurring [Member]
Assets:
Financial instruments owned, at fair value		850	687
Financial instruments owned, at fair value		850	687
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		850	687
Other Investments [Member] | Fair Value, Recurring [Member] | Level 1 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Other Investments [Member] | Fair Value, Recurring [Member] | Level 2 [Member]
Assets:
Financial instruments owned, at fair value
Financial instruments owned, at fair value
Financial instruments owned, at fair value:
Financial instruments owned, at fair value
Other Investments [Member] | Fair Value, Recurring [Member] | Level 3 [Member]
Assets:
Financial instruments owned, at fair value		850	687
Financial instruments owned, at fair value		850	687
Financial instruments owned, at fair value:
Financial instruments owned, at fair value		$ 850	687
Fnality International Limited—Series B-1 Preference Shares [Member] | Fair Value, Nonrecurring [Member]
Assets:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]		8,288
Fnality International Limited—Series B-1 Preference Shares(1)	[1]		8,288
Non-recurring fair value measurements:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]		8,288
Fnality International Limited—Series B-1 Preference Shares [Member] | Fair Value, Nonrecurring [Member] | Level 1 [Member]
Assets:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]
Fnality International Limited—Series B-1 Preference Shares(1)	[1]
Non-recurring fair value measurements:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]
Fnality International Limited—Series B-1 Preference Shares [Member] | Fair Value, Nonrecurring [Member] | Level 2 [Member]
Assets:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]
Fnality International Limited—Series B-1 Preference Shares(1)	[1]
Non-recurring fair value measurements:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]
Fnality International Limited—Series B-1 Preference Shares [Member] | Fair Value, Nonrecurring [Member] | Level 3 [Member]
Assets:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]		8,288
Fnality International Limited—Series B-1 Preference Shares(1)	[1]		8,288
Non-recurring fair value measurements:
Fnality International Limited—Series B-1 Preference Shares(1)	[1]		$ 8,288
[1] Fair value determined on June 17, 2024. Not included above are prospective changes in value due to fluctuations in the British pound to U.S. dollar exchange rate.

X

- References

No definition available.

+ Details

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

X

- Definition

Fair value portion of asset recognized for present right to economic benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

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

X

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-10

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

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

X

- References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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

X

- Definition

Fair value of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 940
-SubTopic 320
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479035/940-320-45-2

+ Details

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

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_FixedIncomeInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=us-gaap_ExchangeTradedOptionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=wt_PassthroughGSEsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SecurityOwnedAndSoldNotYetPurchasedAtFairValueAxis=us-gaap_ExchangeTradedFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=wt_FnalityInternationalLimitedBOnePreferenceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: