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Accumulated Other Comprehensive Income (Loss) - Summary of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2017
Apr. 03, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ 363,024 $ 322,432
Pre-tax Activity 720 510
Tax Effect (278) (197)
Ending Balance 360,390 315,115
Foreign Currency Translation Adjustment [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (11) (5)
Pre-tax Activity 4 15
Tax Effect (2) (5)
Ending Balance (9) 5
Accumulated Other Comprehensive Loss [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (92,897) (82,407)
Ending Balance (92,455) (82,094)
Net Pension Activity [Member] | Actuarial Loss [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (72,393) (68,243)
Pre-tax Activity 807 741
Tax Effect (311) (286)
Ending Balance (71,897) (67,788)
Net Pension Activity [Member] | Prior Service Costs [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (61) (78)
Pre-tax Activity 7 7
Tax Effect (3) (3)
Ending Balance (57) (74)
Net Postretirement Benefits Activity [Member] | Actuarial Loss [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (24,111) (19,825)
Pre-tax Activity 648 587
Tax Effect (250) (227)
Ending Balance (23,713) (19,465)
Net Postretirement Benefits Activity [Member] | Prior Service Costs [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 3,679 5,744
Pre-tax Activity (746) (840)
Tax Effect 288 324
Ending Balance $ 3,221 $ 5,228