Benefit Plans - Net Periodic Pension Cost (Benefit) (Detail) - Pension Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2,553	$ 461	$ 116
Interest cost	11,938	12,182	11,875
Expected return on plan assets	(13,597)	(13,822)	(13,541)
Recognized net actuarial loss	3,402	3,031	3,230
Amortization of prior service cost	28	28	35
Net periodic pension cost (benefit)	$ 4,324	$ 1,880	$ 1,715