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Accumulated Other Comprehensive Income or Loss - Schedule Of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance, value $ 825,407 $ 790,779 $ 747,253
Other comprehensive loss before reclassifications (2,448) (643) (455)
Income tax benefit 934 236 114
Other comprehensive loss, net of tax, before reclassifications (1,514) (407) (341)
Amortization of amounts included in net periodic benefit cost 799 657 884
Income tax expense (302) (240) (335)
Amounts reclassified out of AOCI, net of tax 497 417 549
Other comprehensive (loss) income, net of tax (1,017) 10 208
Reclassification of stranded tax effects (2,682)    
Balance, value 721,950 825,407 790,779
Accumulated Other Comprehensive Income (Loss) [Member]      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance, value (11,437) (11,447) (11,655)
Other comprehensive (loss) income, net of tax (1,017) 10 208
Reclassification of stranded tax effects (2,682)    
Balance, value $ (15,136) $ (11,437) $ (11,447)