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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Loss
Balance at Beginning of Period at Apr. 26, 2014 $ 203,119 $ 43,935 $ 29,923 $ 129,266 $ (9) $ 4
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 20,882     20,882    
Cumulative translation adjustments (2,358)         (2,358)
Unrealized (loss) gain on available-for-sale securities, net of tax (22)         (22)
Net tax benefit related to share-based compensation 38   38      
Share-based compensation 3,038   3,038      
Exercise of stock options 2,207 2,513 (306)      
Employee savings plan activity 2,512 2,512        
Dividends paid (17,377)     (17,377)    
Balance at End of Period at May. 02, 2015 212,039 48,960 32,693 132,771 (9) (2,376)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 2,061     2,061    
Cumulative translation adjustments (529)         (529)
Unrealized (loss) gain on available-for-sale securities, net of tax 7         7
Net tax benefit related to share-based compensation 3   3      
Share-based compensation 2,958   2,958      
Exercise of stock options 307 610 (303)      
Employee savings plan activity 1,777 1,777        
Dividends paid (17,556)     (17,556)    
Balance at End of Period at Apr. 30, 2016 201,067 51,347 35,351 117,276 (9) (2,898)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 10,342     10,342    
Cumulative translation adjustments (1,472)         (1,472)
Unrealized (loss) gain on available-for-sale securities, net of tax (11)         (11)
Share-based compensation 2,914   2,914      
Exercise of stock options 82 343 (261)      
Employee savings plan activity 840 840        
Dividends paid (13,651)     (13,651)    
Treasury stock purchase (1,825)       (1,825)  
Balance at End of Period at Apr. 29, 2017 $ 198,286 $ 52,530 $ 38,004 $ 113,967 $ (1,834) $ (4,381)