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Employee Benefit Plans (Details)
$ in Thousands
 3 Months Ended
Apr. 02, 2016
USD ($)
plan
Apr. 04, 2015
USD ($)
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]    
Amount Company expects to contribute to its pension plans $ 3,700  
Pension Contributions $ 800 $ 1,600
Multiemployer Plans [Abstract]    
Number Of Multiemployer Plans, Withdrawal Obligation Could Be Material | plan 2  
Number Of Multiemployer Plans Withdrawal Obligation Could Be Material Certified Red Zone | plan 1  
Number of Multiemployer Plans, Certified Red Zone | plan 5  
Number of Multiemployer Plans, Certified Yellow Zone | plan 2  
Accrued liability representing the present value of scheduled withdrawal liability payments for under-funded multi-employer plan $ 1,900  
Maximum [Member]    
Multiemployer Plans [Abstract]    
Multiemployer Plan, Contributions To Individual Plan, Percent 5.00%  
Pension Plan, Defined Benefit [Member]    
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]    
Service cost $ 637 1,678
Interest cost 1,745 2,647
Expected return on plan assets (1,885) (3,065)
Amortization of prior service cost 7 (20)
Amortization of net loss 1,168 1,285
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments (1,223) 0
Net pension cost $ 449 $ 2,525