Stock Option Activity (Detail) - Stock Option $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Oct. 10, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding at beginning of period | shares	6,191
Options, Exercised | shares	(1,741)
Options, Outstanding at end of period | shares	4,450
Options, Exercisable at end of period | shares	4,450
Weighted Average Exercise Price, Outstanding at beginning of period	$ 10.88
Weighted Average Exercise Price, Exercised	10.66
Weighted Average Exercise Price, Outstanding at end of period	10.96
Weighted Average Exercise Price, Exercisable at end of period	$ 10.96
Weighted Average Remaining Contractual Term (Years), Outstanding at end of period	1 year 7 months 17 days
Weighted Average Remaining Contractual Term (Years), Exercisable at end of period	1 year 7 months 17 days
Aggregate Intrinsic Value, Outstanding at end of period | $	$ 67,030
Aggregate Intrinsic Value, Exercisable at end of period | $	$ 67,030