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v2.4.1.9

Income Taxes - Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred tax assets: |  |
Net operating losses | $ 2,013wetf_DeferredTaxAssetsOperatingLossCarryforwardsFederal | $ 11,738wetf_DeferredTaxAssetsOperatingLossCarryforwardsFederal
Foreign net operating losses | 816us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign |
Stock-based compensation | 6,046us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 7,579us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Accrued expenses | 5,236us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals |
Deferred rent liability | 2,170us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent | 1,855us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent
Other | 82us-gaap_DeferredTaxAssetsOther | 82us-gaap_DeferredTaxAssetsOther
Deferred tax assets | 16,363us-gaap_DeferredTaxAssetsGross | 21,254us-gaap_DeferredTaxAssetsGross
Deferred tax liabilities: |  |
Incentive compensation | 4,092wetf_DeferredTaxLiabilitiesIncentiveCompensation |
Fixed assets | 1,965us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment | 7us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Unrealized gains |  | 26us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains
Deferred tax liabilities | 6,057us-gaap_DeferredIncomeTaxLiabilities | 33us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax assets less deferred tax liabilities | 10,306wetf_DeferredTaxAssetsLiabilitiesGross | 21,221wetf_DeferredTaxAssetsLiabilitiesGross
Less: valuation allowance | (816)us-gaap_DeferredTaxAssetsValuationAllowance | (21,221)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets and liabilities | $ 9,490us-gaap_DeferredTaxAssetsLiabilitiesNet |

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