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Stock-Based Employee Compensation (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 25, 2012
Dec. 27, 2011
Dec. 31, 2013
2012 Equity Incentive Plan [Member]
Dec. 31, 2013
Minimum [Member]
2012 Equity Incentive Plan [Member]
Dec. 31, 2013
Maximum [Member]
2012 Equity Incentive Plan [Member]
Apr. 30, 2007
Class B Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Dec. 30, 2008
Class B Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Apr. 30, 2007
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
item
Dec. 27, 2011
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
item
Dec. 28, 2010
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Apr. 30, 2007
Continuing Employment [Member]
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Dec. 27, 2011
Continuing Employment [Member]
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Dec. 28, 2010
Continuing Employment [Member]
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Apr. 30, 2007
Performance Target [Member]
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Dec. 27, 2011
Performance Target [Member]
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Dec. 28, 2010
Performance Target [Member]
Class C Shares [Member]
2007 Long-Term Equity Incentive Compensation [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                  
Options granted under the company's equity incentive plan, vesting period       4 years 1 year 4 years     5 years     5 years     5 years    
Shares authorized for issuance       2,232,800                          
Shares of common stock issuable upon exercise of currently outstanding options 1,496,525 825,000   1,496,525                          
Shares available for future grants       707,800                          
Intrinsic value of options exercised $ 215                                
Total unrecognized compensation cost related to non-vested stock options 7,864                                
Cost is expected to be recognized 3 years 1 month 2 days                                
Total fair value of shares vested 963                                
Options granted under the Company's equity incentive plan, contractual term           10 years                      
Stock based compensation cost equity awards             525 0                  
Equity participation in holdings                 7.00%                
Percentage of vested shares                       7.50% 7.50% 7.50% 12.50% 12.50% 12.50%
Investment interest rate of return                   12.00% 12.00%            
Fair value of each option award, risk free interest rate 1.44% 0.58%               0.62% 0.62%            
Fair value of each option award, expected option life 5 years 5 months 27 days 5 years 4 months 24 days               1 year 9 months 1 year 9 months            
Fair value of each option award, expected volatility 41.65% 40.21%               34.00% 34.00%            
Estimated dividend yield                     0.00% 0.00%            
Equity-based compensation 1,689 378 101             101 170            
Number of interest holders                 3 1              
Cash distribution to parent                   357              
Paid a former executive of the Company as consideration                   $ 357