Retirement Plans - Schedule of Pension Plan Weighted-Average Asset Allocations by Asset Category (Detail)	Jan. 02, 2016	Jan. 03, 2015
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	4.40%	3.20%
Equities Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	48.00%	57.60%
Fixed Income Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Weighted-average asset allocations	47.60%	39.20%