XML 24 R52.htm IDEA: XBRL DOCUMENT v3.2.0.727
Comprehensive Income and Accumulated Other Comprehensive Income (Loss) - Summary of Effects of Reclassifications from Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 28, 2015
Jun. 29, 2014
Jun. 28, 2015
Jun. 29, 2014
Amortization of pension and other postretirement benefit plan items:        
Net of tax $ 843 $ 1,145 $ 1,691 $ 2,305
Pension and Other Postretirement Benefit Plans [Member] | Reclassified from Accumulated Other Comprehensive Income (Loss) [Member]        
Amortization of pension and other postretirement benefit plan items:        
Actuarial losses     2,826  
Prior service credit     (76)  
Total before tax     2,750  
Tax benefit     (1,059)  
Net of tax     $ 1,691