Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Earnings before Income Taxes (Detail)

v2.4.1.9
Income Taxes - Summary of Earnings before Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Tax Disclosure [Abstract]      
Expected income tax expense $ 66,981us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 28,775us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ 3,666us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income tax, net of federal benefit 1,032us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 255us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 1,406us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Rate differential on foreign income (27,364)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (11,897)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential (8,752)us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Change in unrecognized tax benefits (2,717)us-gaap_IncomeTaxReconciliationTaxContingencies 740us-gaap_IncomeTaxReconciliationTaxContingencies (149)us-gaap_IncomeTaxReconciliationTaxContingencies
Non-deductible expenses 288us-gaap_IncomeTaxReconciliationNondeductibleExpense (150)us-gaap_IncomeTaxReconciliationNondeductibleExpense 194us-gaap_IncomeTaxReconciliationNondeductibleExpense
Prior year R&D credit claims   (493)skx_IncomeTaxReconciliationPriorYearResearchAndDevelopmentClaims  
Other 3,333us-gaap_IncomeTaxReconciliationOtherAdjustments (1,187)us-gaap_IncomeTaxReconciliationOtherAdjustments 79us-gaap_IncomeTaxReconciliationOtherAdjustments
Change in valuation allowance (2,369)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 5,304us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 3,517us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Total income taxes (benefit) $ 39,184us-gaap_IncomeTaxExpenseBenefit $ 21,347us-gaap_IncomeTaxExpenseBenefit $ (39)us-gaap_IncomeTaxExpenseBenefit
Effective tax rate 20.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations 26.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations (0.40%)us-gaap_EffectiveIncomeTaxRateContinuingOperations