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Note 3 - Earnings Per Share ("EPS") - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 30, 2021	Jul. 31, 2021	Oct. 31, 2020	Aug. 01, 2020	Oct. 31, 2021	Oct. 30, 2021	Oct. 31, 2020	Oct. 31, 2020
Basic earnings per share, net income	$ 2,374	$ 3,685	$ 3,416	$ 7,467	$ 6,059	$ 6,059	$ 10,883	$ 10,883
Basic earnings per share, shares (in shares)	45,350		44,893		45,271	45,271	44,808	44,808
Basic earnings per share, per share income (in dollars per share)	$ 0.05		$ 0.08		$ 0.13	$ 0.13	$ 0.24	$ 0.24
Dilution associated with stock compensation plans, shares (in shares)	149		84		219		139
Diluted earnings per share, net income	$ 2,374		$ 3,416		$ 6,059		$ 10,883
Diluted earnings per share, shares (in shares)	45,499		44,977		45,490	45,490	44,947	44,947
Diluted earnings per share, per share income (in dollars per share)	$ 0.05		$ 0.08		$ 0.13	$ 0.13	$ 0.24	$ 0.24

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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