CONSOLIDATED STATEMENTS OF SHAREHOLDERS EQUITY - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Treasury Stock	Retained Earnings
Beginning balance at Apr. 28, 2018	$ 630.0	$ 19.1	$ 136.5	$ 13.9	$ (11.5)	$ 472.0
Beginning balance (Accounting Standards Update 2016-09) at Apr. 28, 2018	0.1					0.1
Beginning balance (in shares) at Apr. 28, 2018		38,198,353
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net of tax withholding	(1.7)	$ 0.1	(0.1)			$ (1.7)
Issuance of restricted stock, net of tax withholding (in shares)		135,223
Stock-based compensation expense	$ 14.0		14.0
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-09					Accounting Standards Update 2016-09
Other comprehensive income (loss)	$ (27.5)			(27.5)
Net income	91.6					$ 91.6
Dividends on common stock	(16.8)					(16.8)
Ending balance at Apr. 27, 2019	689.7	$ 19.2	150.4	(13.6)	(11.5)	545.2
Ending balance (in shares) at Apr. 27, 2019		38,333,576
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net of tax withholding	(0.4)					(0.4)
Issuance of restricted stock, net of tax withholding (in shares)		104,535
Stock-based compensation expense	0.3		0.3
Other comprehensive income (loss)	(13.3)			(13.3)
Net income	123.4					123.4
Dividends on common stock	(16.3)					(16.3)
Ending balance at May. 02, 2020	783.4	$ 19.2	150.7	(26.9)	(11.5)	651.9
Ending balance (in shares) at May. 02, 2020		38,438,111
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net of tax withholding	(3.9)	$ 0.7	(0.7)			(3.9)
Issuance of restricted stock, net of tax withholding (in shares)		1,350,251
Stock-based compensation expense	6.8		6.8
Exercise of stock options	0.8		0.8
Exercise of Stock Options (in shares)		24,500
Purchase of common stock	(7.5)	$ (0.1)				(7.4)
Purchase of common stock (in shares)		(167,949)
Other comprehensive income (loss)	33.0			33.0
Net income	122.3					122.3
Dividends on common stock	(16.9)					(16.9)
Ending balance at May. 01, 2021	$ 918.0	$ 19.8	$ 157.6	$ 6.1	$ (11.5)	$ 746.0
Ending balance (in shares) at May. 01, 2021		39,644,913