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Operating (Gains), Losses and Other Charges, Net (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 28, 2017
Jun. 29, 2016
Jun. 28, 2017
Jun. 29, 2016
Dec. 28, 2016
Other Income and Expenses [Abstract]          
Pension settlement loss $ 0 $ 24,297 $ 0 $ 24,297  
Software implementation costs 1,544 0 3,668 0  
Losses (gains) on sales of assets and other, net 205 (43) (1,235) (687)  
Restructuring charges and exit costs 297 (13) 396 506  
Operating (gains), losses and other charges, net 2,046 24,241 2,829 24,116  
Restructuring Charges [Abstract]          
Exit costs 295 (36) 326 [1] 115  
Severance and other restructuring charges 2 23 70 391  
Total restructuring charges and exit costs 297 (13) 396 506  
Restructuring Reserve [Roll Forward]          
Balance, December 28, 2016     1,896    
Exit costs 295 $ (36) 326 [1] $ 115  
Payments, net of sublease receipts     (928)    
Interest accretion     49    
Balance, June 28, 2017 1,343   1,343    
Less current portion included in other current liabilities 319   319    
Long-term portion included in other noncurrent liabilities 1,024   1,024    
Accrued severance and other restructuring charges $ 200   $ 200   $ 400
[1] Included as a component of operating (gains), losses and other charges, net.