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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 9 Months Ended
Jan. 29, 2022
Oct. 30, 2021
Jul. 31, 2021
Jan. 30, 2021
Oct. 31, 2020
Aug. 01, 2020
Jan. 29, 2022
Jan. 30, 2021
Basic earnings per share, net income $ (4,350) $ 2,374 $ 3,685 $ (214) $ 3,416 $ 7,467 $ 1,709 $ 10,669
Basic earnings per share, shares (in shares) 45,223     45,064     45,263 44,908
Basic earnings per share, per share income (in dollars per share) $ (0.10)     $ (0.00)     $ 0.04 $ 0.24
Diluted earnings per share, net income $ (4,350)     $ (214)     $ 1,709 $ 10,669
Diluted earnings per share, shares (in shares) 45,223     45,064     45,442 45,061
Diluted earnings per share, per share income (in dollars per share) $ (0.10)     $ (0.00)     $ 0.04 $ 0.24
Dilution associated with stock compensation plans, shares (in shares)             179 153