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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY CONDENSED 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. 29, 2017 $ 198,286 $ 52,530 $ 38,004 $ 113,967 $ (1,834) $ (4,381)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 8,429     8,429    
Cumulative translation adjustments 1,081         1,081
Unrealized gain (loss) on available-for-sale securities, net of tax (7)         (7)
Share-based compensation 673   673      
Exercise of stock options 211 211 0      
Employee savings plan activity 820 820        
Dividends paid (3,094)     (3,094)    
Balance at End of Period at Jul. 29, 2017 206,399 53,561 38,677 119,302 (1,834) (3,307)
Balance at Beginning of Period at Apr. 29, 2017 198,286 52,530 38,004 113,967 (1,834) (4,381)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 15,561          
Cumulative translation adjustments 1,061          
Unrealized gain (loss) on available-for-sale securities, net of tax (33)          
Balance at End of Period at Oct. 28, 2017 211,039 53,862 39,034 123,330 (1,834) (3,353)
Balance at Beginning of Period at Jul. 29, 2017 206,399 53,561 38,677 119,302 (1,834) (3,307)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 7,132     7,132    
Cumulative translation adjustments (20)         (20)
Unrealized gain (loss) on available-for-sale securities, net of tax (26)         (26)
Share-based compensation 668   668      
Exercise of stock options 301 301 0      
Tax payments related to RSU issuances (311)   (311)      
Dividends paid (3,104)     (3,104)    
Balance at End of Period at Oct. 28, 2017 211,039 53,862 39,034 123,330 (1,834) (3,353)
Balance at Beginning of Period at Apr. 28, 2018 197,616 54,731 40,328 107,105 (1,834) (2,714)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 4,574     4,574    
Cumulative translation adjustments (1,139)         (1,139)
Unrealized gain (loss) on available-for-sale securities, net of tax (13)         (13)
Share-based compensation 651   651      
Exercise of stock options 57 57 0      
Employee savings plan activity 820 820        
Dividends paid (3,121)     (3,121)    
Balance at End of Period at Jul. 28, 2018 199,445 55,608 40,979 108,558 (1,834) (3,866)
Balance at Beginning of Period at Apr. 28, 2018 197,616 54,731 40,328 107,105 (1,834) (2,714)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 13,180          
Cumulative translation adjustments (1,694)          
Unrealized gain (loss) on available-for-sale securities, net of tax (7)          
Balance at End of Period at Oct. 27, 2018 204,737 55,608 41,345 114,033 (1,834) (4,415)
Balance at Beginning of Period at Jul. 28, 2018 199,445 55,608 40,979 108,558 (1,834) (3,866)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 8,606     8,606    
Cumulative translation adjustments (555)         (555)
Unrealized gain (loss) on available-for-sale securities, net of tax 6         6
Share-based compensation 612   612      
Tax payments related to RSU issuances (246)   (246)      
Dividends paid (3,131)     (3,131)    
Balance at End of Period at Oct. 27, 2018 $ 204,737 $ 55,608 $ 41,345 $ 114,033 $ (1,834) $ (4,415)