Commitments and Contingencies - Schedule of Liability for Deferred Compensation (Details) - USD ($) $ in Thousands	Jan. 26, 2020	Jan. 27, 2019
Schedule of liability for Deferred Compensation [Line Items]
Deferred compensation liability, current	$ 1,365	$ 2,203
Deferred Compensation Plan For Officers And Executives
Schedule of liability for Deferred Compensation [Line Items]
Total deferred compensation liabilities under this plan	36,608	29,454
Accrued liabilities \| Deferred Compensation Plan For Officers And Executives
Schedule of liability for Deferred Compensation [Line Items]
Deferred compensation liability, current	1,365	2,203
Other long-term liabilities \| Deferred Compensation Plan For Officers And Executives
Schedule of liability for Deferred Compensation [Line Items]
Deferred compensation liability, noncurrent	$ 35,243	$ 27,251

[Line Items] for Schedule of liability for Deferred Compensation [Table]

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

+ References

No definition available.

+ Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 25
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=6409733&loc=d3e19512-108361

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 30
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20028-108363

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

No definition available.

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