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Deferred Consideration - Gold Payments - Schedule of Deferred Consideration (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Contractual gold payments	$ 1,583	$ 4,446	$ 6,069	$ 8,896
Contractual gold payments—gold ounces paid	792	2,375	3,167	4,750
Gain/(loss) on revaluation/termination of deferred consideration—gold payments	$ 41,361	$ 2,311	$ 61,953	$ (14,707)

X

- Definition

Contractual gold payments.

+ References

No definition available.

+ Details

Name:	wt_ContractualGoldPayments
Namespace Prefix:	wt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents Contractual Gold Payments Gold Ounces Paid.

+ References

No definition available.

+ Details

Name:	wt_ContractualGoldPaymentsGoldOuncesPaid
Namespace Prefix:	wt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Gain/loss from revaluation of deferred consideration.

+ References

No definition available.

+ Details

Name:	wt_GainLossFromChangeInDeferredConsideration
Namespace Prefix:	wt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration