Derivatives and Hedging Activities - Summary of the Carrying Values of Derivative Instruments (Details) $ in Thousands	Jan. 27, 2019 USD ($)
Derivatives, Fair Value [Line Items]
Fair Value - Assets	$ 69	[1]
Fair Value - Liabilities	0	[1]
Derivative Net Carrying Value	69
Foreign currency cash flow hedges
Derivatives, Fair Value [Line Items]
Derivative Net Carrying Value	69	[2]
Level 2 | Foreign currency cash flow hedges | Other Current Assets
Derivatives, Fair Value [Line Items]
Fair Value - Assets	69	[1],[2]
Level 2 | Foreign currency cash flow hedges | Accrued liabilities
Derivatives, Fair Value [Line Items]
Fair Value - Liabilities	$ 0	[1],[2]

[1] The fair values of the foreign exchange forward contracts are valued using Level 2 inputs. Please refer to Note 5.

[2] Assets are included in "Other current assets" and liabilities are included in "Accrued liabilities" within the Balance Sheets.