Segment Information and Geographic Area Information - Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	May 01, 2021	Jan. 30, 2021	Oct. 31, 2020	Aug. 01, 2020	May 02, 2020	Feb. 01, 2020	Oct. 26, 2019	Jul. 27, 2019	May 01, 2021	May 02, 2020	Apr. 27, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 301.0	$ 295.3	$ 300.8	$ 190.9	$ 210.6	$ 285.9	$ 257.2	$ 270.2	$ 1,088.0	$ 1,023.9	$ 1,000.3
Total Tangible Long-lived Assets, Net	226.3				225.4				226.3	225.4
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									510.8	531.5	540.5
Total Tangible Long-lived Assets, Net	75.0				89.8				75.0	89.8
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									193.7	116.9	113.7
Total Tangible Long-lived Assets, Net	27.2				24.1				27.2	24.1
Malta
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									173.5	143.9	148.5
Total Tangible Long-lived Assets, Net	43.0				40.1				43.0	40.1
Mexico
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									87.4	104.7	0.0
Total Tangible Long-lived Assets, Net	24.6				24.0				24.6	24.0
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									14.9	19.5	101.6
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									107.7	107.4	$ 96.0
Belgium
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Tangible Long-lived Assets, Net	24.8				21.4				24.8	21.4
Other Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Total Tangible Long-lived Assets, Net	$ 31.7				$ 26.0				$ 31.7	$ 26.0