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Segment Information - Summary of Sales Activity to Countries that Represented Greater than 10% of Total Net Sales (Details)	3 Months Ended		6 Months Ended
	Jul. 26, 2020	Jul. 28, 2019	Jul. 26, 2020	Jul. 28, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Net sales
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Geographic Concentration Risk | Net sales | China (including Hong Kong)
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	63.00%	52.00%	60.00%	52.00%
Geographic Concentration Risk | Net sales | United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	9.00%	9.00%	9.00%	10.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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