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CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - 6 months ended Jul. 15, 2017 - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Retained Earnings [Member]
Balance, value at Dec. 31, 2016 $ 825,407 $ 521,984 $ (11,437) $ 314,860
Balance, shares at Dec. 31, 2016 37,539 37,539    
Net earnings $ 36,054     36,054
Other comprehensive income 45   45  
Dividends - $0.33 per share (12,500)     (12,500)
Share repurchase, value (7,873) $ (7,873)    
Share repurchase, shares   (300)    
Stock-based employee compensation 7,491 $ 7,491    
Issuances of common stock on stock option exercises and stock bonus plan, value 3,606 $ 3,606    
Issuances of common stock on stock option exercises and stock bonus plan, share   168    
Issuances of restricted stock, shares   292    
Cancellations of stock-based awards, value (3,162) $ (3,162)    
Cancellations of stock-based awards, shares   (163)    
Balance, value at Jul. 15, 2017 $ 849,068 $ 522,046 $ (11,392) $ 338,414
Balance, shares at Jul. 15, 2017 37,536 37,536