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Related Party Transactions (Details) (Energy Micro, USD $) | 0 Months Ended
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Oct. 17, 2013 | Jul. 01, 2013 | Jul. 01, 2013
Related Party Transaction |  |  |
Initial consideration | $ 107,400,000 slab_BusinessCombinationInitialConsiderationTransferred | $ 107,400,000 slab_BusinessCombinationInitialConsiderationTransferred |
Holdback amount related to potential indemnification claims | 20,300,000 us-gaap_EscrowDeposit | 20,300,000 us-gaap_EscrowDeposit | 20,300,000 us-gaap_EscrowDeposit
Contingent consideration | 33,300,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh | 33,300,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh | 33,300,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
Mr. Forre |  |  |
Related Party Transaction |  |  |
Beneficial ownership percentage |  | 32.00%slab_BeneficialOwnershipPercentageInAcquiredEntity / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember | 32.00%slab_BeneficialOwnershipPercentageInAcquiredEntity / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember
Initial consideration |  |  | 35,000,000 slab_BusinessCombinationInitialConsiderationTransferred / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember
Holdback amount related to potential indemnification claims |  | 6,500,000 us-gaap_EscrowDeposit / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember | 6,500,000 us-gaap_EscrowDeposit / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember
Contingent consideration |  | 10,500,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember | 10,500,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_ExecutiveVicePresidentMember
Mr. Bogen |  |  |
Related Party Transaction |  |  |
Beneficial ownership percentage | 2.00%slab_BeneficialOwnershipPercentageInAcquiredEntity / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember |  |
Initial consideration | 900,000 slab_BusinessCombinationInitialConsiderationTransferred / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember |  |
Holdback amount related to potential indemnification claims | 400,000 us-gaap_EscrowDeposit / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember |  |
Contingent consideration | 700,000 us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember |  |
Investment in acquired entity by related party prior to the acquisition | $ 800,000 slab_RelatedPartyTransactionsInvestmentInAcquiredEntityByRelatedParty / us-gaap_BusinessAcquisitionAxis = slab_EnergyMicroMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember |  |

X
- Definition Represents the ownership interest percentage of common stock deemed to be beneficially owned by the beneficial owners. + References No definition available. + Details
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- Definition Represents the amount of initial consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References No definition available. + Details
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- Definition Represents the amount of investment in the acquired entity by related party prior to the acquisition. + References No definition available. + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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