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Stock-Based Compensation (Restricted Stock and Restricted Stock Units Activity) (Details)
6 Months Ended
Jun. 29, 2018
$ / shares
shares
Restricted Stock And Restricted Stock Units Time Based [Member]  
Restricted Stock and Restricted Stock Unit Activity (in shares)  
Nonvested, Beginning | shares 163,431
Granted | shares 147,878
Vested | shares (11,999)
Forfeited | shares (4,453)
Nonvested, Ending | shares 294,857
Restricted Stock and Restricted Stock Unit Weighted Average Fair Value (in dollars per share)  
Nonvested, Beginning | $ / shares $ 35.96
Granted | $ / shares 49.30
Vested | $ / shares 49.78
Forfeited | $ / shares 43.62
Nonvested, Ending | $ / shares $ 41.97
Performance-based RSUs (PSUs) [Member]  
Restricted Stock and Restricted Stock Unit Activity (in shares)  
Nonvested, Beginning | shares 469,889
Granted | shares 159,669
Vested | shares (127,191)
Forfeited | shares (147,555)
Nonvested, Ending | shares 354,812
Restricted Stock and Restricted Stock Unit Weighted Average Fair Value (in dollars per share)  
Nonvested, Beginning | $ / shares $ 32.37
Granted | $ / shares 45.37
Vested | $ / shares 34.29
Forfeited | $ / shares 34.31
Nonvested, Ending | $ / shares $ 36.72