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Earnings Per Share EPS - Reconciliation of Income (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Feb. 01, 2020	Nov. 02, 2019	Aug. 03, 2019	Jan. 26, 2019	Oct. 27, 2018	Jul. 28, 2018	Feb. 01, 2020	Jan. 26, 2019
Net (loss) income
Basic (loss) earnings per share	$ (12,734)	$ 7,274	$ 7,030	$ (3,319)	$ 8,606	$ 4,574	$ 1,570	$ 9,861
Dilution associated with stock compensation plans	0			0			0	0
Diluted (loss) earnings per share	$ (12,734)			$ (3,319)			$ 1,570	$ 9,861
Shares
Basic earnings per share (in shares)	45,189			45,018			45,139	44,834
Dilution associated with stock compensation plans (in shares)	0			0			273	305
Diluted earnings per share (in shares)	45,189			45,018			45,412	45,139
Per share (loss) income
Basic earnings per share (in dollars per share)	$ (0.28)			$ (0.07)			$ 0.03	$ 0.22
Dilution associated with stock compensation plans (in dollars per share)	0.00			0.00			0.00	0.00
Diluted earnings per share (in dollars per share)	$ (0.28)			$ (0.07)			$ 0.03	$ 0.22

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Incremental Common Shares Attributable to Share-based Payment Arrangements, Per Share Amount

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