XML 27 R32.htm IDEA: XBRL DOCUMENT v2.4.0.6

Commitments and Contingencies (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Commitments and Contingencies (Textual) [Abstract]
Operating leases expenses	$ 351	$ 267	$ 987	$ 781
Credit amount as collateral	$ 700		$ 700		$ 700

X

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	wetf_CommitmentsAndContingenciesTextualAbstract
Namespace Prefix:	wetf_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Operating leases expenses.

+ References

No definition available.

+ Details

Name:	wetf_OperatingLeasesExpenses
Namespace Prefix:	wetf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration