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Benefit Plans - Components of Net Periodic Pension Cost (Detail) - Pension Plans [Member] - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2017
Jul. 03, 2016
Jul. 02, 2017
Jul. 03, 2016
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 150 $ 29 $ 300 $ 57
Interest cost 2,979 3,031 5,958 6,062
Expected return on plan assets (3,399) (3,457) (6,798) (6,915)
Recognized net actuarial loss 807 740 1,614 1,481
Amortization of prior service cost 7 7 14 14
Net periodic pension cost $ 544 $ 350 $ 1,088 $ 699