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Commitments and Contingencies - Schedule of Liability for Deferred Compensation (Details) (Details) - Deferred Compensation Plan For Officers And Executives - USD ($)
$ in Thousands
Jul. 26, 2020
Jan. 26, 2020
Loss Contingencies [Line Items]    
Total deferred compensation liabilities under this plan $ 37,873 $ 36,608
Accrued liabilities    
Loss Contingencies [Line Items]    
Accrued liabilities 5,054 1,365
Other long-term liabilities    
Loss Contingencies [Line Items]    
Other long-term liabilities $ 32,819 $ 35,243