Summary of Company's Balance Sheet Related Pension and Other Postretirement Benefit Plan (Detail) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Post-Retirement Plans [Abstract]
Current benefit liability	$ 1,118	$ 1,089
Noncurrent benefit liability	76,541	93,589
Accumulated other comprehensive loss, net of tax	$ 86,610	$ 86,612