Benefit Plans - Pension Plan Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jan. 03, 2016	Dec. 28, 2014
Defined Benefit Plan Disclosure [Line Items]
Total	$ 214,055	$ 212,692
Common/Collective Trust Funds Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	128,220	127,311
Equity Securities, Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	677	642
Common/Collective Trust Funds Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	85,158	84,739
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	677	619
Level 1 [Member] | Common/Collective Trust Funds Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Level 1 [Member] | Equity Securities, Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	677	619
Level 1 [Member] | Common/Collective Trust Funds Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	0	0
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	213,378	212,073
Level 2 [Member] | Common/Collective Trust Funds Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	128,220	127,311
Level 2 [Member] | Equity Securities, Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	0	23
Level 2 [Member] | Common/Collective Trust Funds Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Total	$ 85,158	$ 84,739