Summary of Information Regarding Stock Options (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2014
Number of Options
Beginning Balance, number of options	1,454,816
Granted, number of options	1,000
Exercised, number of options	(288,633)
Forfeited, number of options	(60,300)
Ending Balance, number of options	1,106,883
Options exercisable at the ending, Number of Options	702,933
Weighted Average Exercise Price per Share
Beginning Balance, Weighted Average Exercise Price per Share	$ 44.55
Granted, Weighted Average Exercise Price per Share	$ 58.06
Exercised, Weighted Average Exercise Price per Share	$ 40.79
Forfeited, Weighted Average Exercise Price per Share	$ 47.04
Ending Balance, Weighted Average Exercise Price per Share	$ 45.41
Options exercisable at March 29, 2014	$ 43.23
Weighted Average Remaining Contractual Term (years)
Options outstanding at March 29, 2014	5 years 9 months 18 days
Options exercisable at March 29, 2014	4 years 8 months 12 days
Aggregate Intrinsic Value
Options outstanding at March 29, 2014	$ 14,139
Options exercisable at March 29, 2014	$ 10,507