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Stock-Based Compensation (Narrative) (Details) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended 0 Months Ended 9 Months Ended
Sep. 28, 2014
Sep. 29, 2013
Sep. 28, 2014
Sep. 29, 2013
Sep. 28, 2014
Stock Options
Sep. 29, 2013
Stock Options
Sep. 28, 2014
Restricted Stock Units (RSUs)
Sep. 29, 2013
Restricted Stock Units (RSUs)
Sep. 28, 2014
Time-Vested Cash Unit Awards
Sep. 29, 2013
Time-Vested Cash Unit Awards
Sep. 28, 2014
Time-Vested Cash Unit Awards
Sep. 29, 2013
Time-Vested Cash Unit Awards
Sep. 28, 2014
Monte Carlo Simulation Cash-Based Award May 2, 2013
Feb. 27, 2014
Long Term Incentive Plan, 2014 Plan
Restricted Stock Units (RSUs)
Sep. 28, 2014
Long Term Incentive Plan, 2014 Plan
Restricted Stock Units (RSUs)
May 28, 2013
LTIP 2013 Plan
Feb. 27, 2013
LTIP 2013 Plan
Sep. 28, 2014
LTIP 2013 Plan
Sep. 29, 2013
LTIP 2013 Plan
May 02, 2013
May 2, 2013 Cash-Based Award
Sep. 28, 2014
May 2, 2013 Cash-Based Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                          
Share-based compensation expense $ 1,400,000 $ 1,300,000 $ 4,300,000 $ 5,100,000                     $ 200,000     $ 63,000 $ 29,000    
Share-based compensation expense net of tax 1,400,000 1,200,000 4,200,000 5,000,000                                  
Tax benefit from option exercise     100,000 400,000                                  
Weighted-average grant date fair value (USD per share)             $ 14.38             $ 14.90   $ 11.56 $ 11.91        
Unrecognized compensation cost         1,400,000   4,200,000               900,000     100,000      
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Maximum Units Outstanding Achievable                             153,820     26,400      
Cash-based Compensation Arrangement by Cash-based Payment Award, Established Target Cash Amount                                       400,000  
Cash-based Compensation Arrangement by Cash-based Payment Award, Fair Value                                         $ 0.43
Allocated Cash-based Compensation Expense                                         31,000
Cash-based Compensation Arrangement by Cash-based Payment Award, Fair Value Assumptions, Expected Volatility Rate                         44.32%                
Cash-based Compensation Arrangement by Cash-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate                         0.23%                
Cash-based Compensation Arrangement by Cash-based Payment Award, Fair Value Assumptions, Expected Dividend Rate                         0.00%                
Total intrinsic value of options exercised         300,000 700,000                              
Total fair value of restricted stock awards             2,900,000 4,200,000                          
Weighted-average period over which unrecognized compensation cost will be recognized (years)         1 year 8 months 12 days   1 year 9 months 18 days                            
Deferred compensation arrangement liability, current and noncurrent                 600,000 700,000 600,000 700,000                  
Deferred compensation arrangement with individual, share-based compensation expense                 $ 300,000 $ 300,000 $ 900,000 $ 900,000