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Stockholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Apr. 24, 2018
Mar. 31, 2018
Apr. 01, 2017
Apr. 27, 2016
Stockholders' Equity [Line Items]        
Dividends, Per Share, Declared   $ 0.15 $ 0.15  
Stock Options        
Stockholders' Equity [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   0 0  
Restricted Stock Units (RSUs)        
Stockholders' Equity [Line Items]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   0 42  
2007 Share Repurchase Plan [Member]        
Stockholders' Equity [Line Items]        
Stock repurchased during period, shares     14,696  
Shares acquired weighted average cost per share     $ 20.39  
Stock repurchased during period, value     $ 299,919  
2016 Share Repurchase Plan [Member]        
Stockholders' Equity [Line Items]        
Stock Repurchase Program, Number of Shares Authorized to be Repurchased       40,000
Remaining number of shares authorized to be repurchased   20,360    
Subsequent Event [Member]        
Stockholders' Equity [Line Items]        
Dividends, Per Share, Declared $ 0.15