Summary of Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Results of Operations (Details) - USD ($) $ / shares in Units, $ 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
Quarterly Financial Information Disclosure [Abstract]
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
Gross profit	75.6	72.6	80.8	45.1	59.2	79.3	68.6	75.8	274.1	282.9	265.8
Net income	$ 31.1	$ 31.9	$ 38.6	$ 20.7	$ 30.1	$ 41.2	$ 23.8	$ 28.3	$ 122.3	$ 123.4	$ 91.6
Net income per basic common share	$ 0.82	$ 0.84	$ 1.01	$ 0.55	$ 0.80	$ 1.10	$ 0.63	$ 0.75	$ 3.22	$ 3.28	$ 2.45
Net income per diluted common share	$ 0.81	$ 0.83	$ 1.01	$ 0.54	$ 0.79	$ 1.09	$ 0.63	$ 0.75	$ 3.19	$ 3.26	$ 2.43