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Employee Benefit Plans (Narrative) (Details) (USD $)
0 Months Ended 7 Months Ended 12 Months Ended
Sep. 01, 2011
Dec. 31, 2012
Dec. 30, 2013
Dec. 31, 2012
H
Dec. 31, 2011
Dec. 31, 2010
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]            
Amended service period under defined contribution plan 90 days          
Non-elective contribution made by the company as a percentage of employee's compensation       4.00%    
Minimum service period for eligibility to receive non-elective contribution from company (in hours)       1,000    
Company matching contribution as a percentage of the first 3.0% compensation contributed by each eligible employee   100.00%   100.00%    
Percentage of each employee's compensation eligible for Compoany match of 100% in defined contribution plan   3.00%   3.00%    
Company matching contribution as a percentage of the next 2.0% of compensation contributed by each eligible employee   50.00%   50.00%    
Percentage of each employee's compensation eligible for Company match of 50% in defined contribution plan   2.00%   2.00%    
Maximum discretionary contribution made by Company to defined contribution plan as a percentage of each employee's compensation   4.00%   4.00%    
Period of service after which employees vest in Company contributions       3 years    
Expenses related to defined contribution plan       $ 1,600,000 $ 1,600,000 $ 1,200,000
Accrued expenses related to defined contribution plan   1,400,000   1,400,000 1,088,000  
Discretionary contributions to the Management Incentive Plan (MIP) funded by the Company       400,000 300,000  
Total accrued amount for the MIP including employee deferrals, discretionary contributions and related earnings   900,000   900,000 500,000  
Accrued expense for cash portion of bonus plan   3,503,000   3,503,000 4,845,000  
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]            
Actuarial loss   795,000        
Estimated future employer contributions in 2013     100,000      
Pension Plan
           
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]            
Actuarial loss   820,000        
Amortization of net loss into periodic benefit cost during 2013       300,000    
Pension Plan | Accumulated Other Comprehensive Loss
           
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]            
Actuarial loss       $ 1,200,000