Represents the maximum amount of the guarantees available through letters of credit.

No definition available.

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Balance Type:	credit
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- Definition

Represents the amount that the borrowing capacity of the line of credit may be increased at the entity's option, subject to certain conditions, under the terms of the credit agreement.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Represents the maximum ratio of total debt to earnings before interest expense, income taxes and noncash items (such as depreciation, depletion and amortization expense, unrealized gains and losses on commodity derivatives, ceiling test write-downs, and goodwill impairments) permitted under credit facilities' covenants.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Represents the minimum ratio of earnings before interest expense, income taxes and noncash items (such as depreciation, depletion and amortization expense, unrealized gains and losses on commodity derivatives, ceiling test write-downs, and goodwill impairments) to debt payment permitted under credit facilities' covenants.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Represents the number of years for which the percentage of principal amortization is five percent 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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- Definition

Represents the number of years for which the percentage of principal amortization is ten percent 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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Data Type:	xbrli:durationItemType
Balance Type:	na
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- Definition

Represents the percentage of principal amount of the credit facility to be amortized in each of the first two years.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of principal amount of the credit facility to be amortized in each of years three through five.

+ References

No definition available.

+ Details

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Namespace Prefix:	slab_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum amount of the guarantees available through swingline loan.

+ References

No definition available.

+ Details

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Namespace Prefix:	slab_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	na
Period Type:	instant

- Details

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Balance Type:	na
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, 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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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-SubTopic 10

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-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20, 22

-Article 5

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Balance Type:	na
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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

+ References

+ Details

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Balance Type:	credit
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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

+ References

+ Details

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- Definition

Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year ended.

+ References

No definition available.

+ Details

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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

+ References

+ Details

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Debt (Details) (USD $)	1 Months Ended			1 Months Ended	3 Months Ended		3 Months Ended
Debt (Details) (USD $)	Jul. 31, 2012 Term Loan Facility	Mar. 29, 2014 Term Loan Facility	Sep. 27, 2012 Term Loan Facility	Jul. 31, 2012 Agreement	Mar. 29, 2014 Agreement	Jul. 31, 2012 Revolving Credit Facility	Mar. 29, 2014 Term loan facility and revolving credit facility, other than swingline loans LIBOR	Mar. 29, 2014 Term loan facility and revolving credit facility, other than swingline loans LIBOR Low end of range	Mar. 29, 2014 Term loan facility and revolving credit facility, other than swingline loans LIBOR High end of range	Mar. 29, 2014 Term loan facility and revolving credit facility, other than swingline loans Prime Rate	Mar. 29, 2014 Term loan facility and revolving credit facility, other than swingline loans Federal Funds	Mar. 29, 2014 Term loan facility and revolving credit facility, other than swingline loans one-month LIBOR	Mar. 29, 2014 Term loan facility, revolving credit facility, swingline and other loans Base rate	Mar. 29, 2014 Term loan facility, revolving credit facility, swingline and other loans Base rate Low end of range	Mar. 29, 2014 Term loan facility, revolving credit facility, swingline and other loans Base rate High end of range
Debt
Maximum borrowing capacity	$ 100,000,000			$ 230,000,000		$ 130,000,000
Term of debt instrument				5 years
Percentage of principal amortization in each of the first two years	5.00%
Number of years for which the percentage of principal amortization is five percent	2 years
Percentage of principal amortization in each of the next three years	10.00%
Number of years for which the percentage of principal amortization is ten percent	3 years
Sublimit on letters of credit						25,000,000
Sublimit on swingline loan						10,000,000
Additional increase in borrowing capacity of the line of credit available at the entity's option						50,000,000
Amount borrowed under the term loan facility			100,000,000
Debt Instrument Base rate							LIBOR			Bank of America prime rate	Federal Funds rate	one-month LIBOR	base rate
Interest rate added to the base rate (as a percent)								1.50%	2.50%		0.50%	1.00%		0.50%	1.50%
Maximum leverage ratio					2.5
Minimum fixed charge coverage ratio					1.50
Fixed interest rate percentage		0.764%
Combined interest rate percentage		2.514%
Term Loan Facility
2014		6,250,000
2015		10,000,000
2016		10,000,000
2017		67,500,000
Total debt		$ 93,750,000