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Commitments and Contingencies - Schedule of Liability for Deferred Compensation (Details) - USD ($)
$ in Thousands
Jan. 27, 2019
Jan. 28, 2018
Schedule of liability for Deferred Compensation [Line Items]    
Deferred compensation liability, current $ 2,203 $ 2,333
Deferred Compensation Plan For Officers And Executives    
Schedule of liability for Deferred Compensation [Line Items]    
Total deferred compensation liabilities under this plan 29,454 30,530
Accrued liabilities | Deferred Compensation Plan For Officers And Executives    
Schedule of liability for Deferred Compensation [Line Items]    
Deferred compensation liability, current 2,203 2,333
Other long-term liabilities | Deferred Compensation Plan For Officers And Executives    
Schedule of liability for Deferred Compensation [Line Items]    
Deferred compensation liability, noncurrent $ 27,251 $ 28,197