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Stock-Based Compensation (Details 4) In Thousands, unless otherwise specified | Jan. 03, 2015
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Stock-Based Compensation |
Reserved shares of common stock for future issuance | 5,151 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
2000 Stock Incentive Plan |
Stock-Based Compensation |
Reserved shares of common stock for future issuance | 529 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_PlanNameAxis = slab_StockIncentivePlan2000Member
2009 Stock Incentive Plan |
Stock-Based Compensation |
Reserved shares of common stock for future issuance | 3,740 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_PlanNameAxis = slab_StockIncentivePlan2009Member
2009 Employee Stock Purchase Plan |
Stock-Based Compensation |
Reserved shares of common stock for future issuance | 882 us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_PlanNameAxis = slab_EmployeeStockPurchasePlan2009Member

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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