Deferred Compensation Plans - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 02, 2015	Oct. 03, 2014	Oct. 02, 2015	Oct. 03, 2014	Jan. 02, 2015
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Trading securities	$ 41,284,000		$ 41,284,000		$ 43,848,000
Deferred compensation plan vested amounts due	45,038,000		45,038,000		$ 45,394,000
Change in market value of trust assets	$ 2,688,000	$ 1,331,000	$ (1,379,000)	$ 1,351,000
Maximum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percentage of compensation deferred			100.00%