Benefit Plans - Liability Under Executive Benefit Plans (Detail) - USD ($) $ in Thousands	Jan. 01, 2017	Jan. 03, 2016
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ 23,858	$ 19,155
Supplemental Savings Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	7,339	6,425
Noncurrent liabilities	70,709	69,941
Total liability	78,048	76,366
Long-Term Retention Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	2	1
Noncurrent liabilities	1,256	535
Total liability	1,258	536
Retention Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	3,359	2,395
Noncurrent liabilities	44,480	45,111
Total liability	47,839	47,506
Performance Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	5,282	5,025
Noncurrent liabilities	5,651	5,571
Total liability	$ 10,933	$ 10,596