Deferred Compensation Plans - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 03, 2015	Jul. 04, 2014	Jul. 03, 2015	Jul. 04, 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	$ 43,257,000		$ 43,257,000		$ 43,848,000
Deferred compensation plan vested amounts due	46,884,000		46,884,000		$ 45,394,000
Change in market value of trust assets	$ (72,000)	$ 1,952,000	$ 1,309,000	$ 2,682,000
Maximum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percentage of compensation deferred			100.00%