XML 58 R31.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Risks and Uncertainties (Tables) | 12 Months Ended
--- | ---
Dec. 28, 2019
Risks and Uncertainties |
Schedule of concentration risk for customers that account for greater than 10% of accounts receivable | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 28, | ​ | December 29, |
​ |  | 2019 |  | 2018 |
Edom Technology | ​ | 17 | % | 10 | %
Arrow Electronics |  | 14 | % | 12 | %
Other |  | 11 | % | * | ​
| * | Less than 10% of accounts receivable
Schedule of concentration risk for distributors that account for greater than 10% of revenues | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended |
​ | ​ | December 28, | ​ | December 29, | ​ | December 30, |
​ |  | 2019 |  | 2018 |  | 2017 |
Arrow Electronics |  | 26 | % | 21 | % | 12 | %
Edom Technology |  | 20 | % | 17 | % | 19 | %
Avnet | ​ | * | ​ | * | ​ | 14 | %
* | Less than 10% of revenue

X
- Definition Tabular disclosure of the concentration risks associated with accounts receivables benchmark. + References No definition available. + Details
Name: | slab_SchedulesOfConcentrationOfRiskAccountsReceivableBenchmarkTableTextBlock
Namespace Prefix: | slab_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the concentration risks associated with revenues benchmark. + References No definition available. + Details
Name: | slab_SchedulesOfConcentrationOfRiskRevenueBenchmarkTableTextBlock
Namespace Prefix: | slab_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration