Summary of Company's Balance Sheet Related Pension and Other Postretirement Benefit Plan (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Pension And Other Postretirement Benefit Expense [Abstract]
Current benefit liability	$ 979	$ 1,118
Noncurrent benefit liability	69,601	76,541
Accumulated other comprehensive loss, net of tax	$ 82,222	$ 86,610