XML 57 R27.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Significant Accounting Policies (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 29, 2014 | Dec. 27, 2014 | Dec. 28, 2013
Basis of Presentation and Principles of Consolidation |  |  |
Length of fiscal year | 91 days | 371 days | 364 days
Number of days in each fiscal quarter for 52-week fiscal year | 91 days |  |
Minimum |  |  |
Basis of Presentation and Principles of Consolidation |  |  |
Length of fiscal year | 364 days |  |
Maximum |  |  |
Basis of Presentation and Principles of Consolidation |  |  |
Length of fiscal year | 371 days |  |

X
- Definition Represents the length of fiscal year of the reporting entity in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | slab_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the number of days in each fiscal quarter for a 52-week fiscal year in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | slab_NumberOfDaysInFiscalQuarter52WeekYear
Namespace Prefix: | slab_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
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Namespace Prefix: | slab_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration