Deferred Compensation Plans - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015	Jan. 01, 2016
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Change in market value of trust assets	$ 1,458,000	$ (2,688,000)	$ 2,823,000	$ (1,379,000)
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	46,548,000		46,548,000		$ 42,940,000
Deferred compensation plan vested amounts due	$ 51,845,000		$ 51,845,000		$ 46,740,000
Maximum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Percentage of compensation deferred			100.00%