Stock Option Activity (Detail) - Stock Option $ / shares in Units, shares in Thousands, $ in Thousands	4 Months Ended
	Apr. 23, 2016 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding at beginning of period | shares	4,353
Options, Exercised | shares	(102)
Options, Outstanding at end of period | shares	4,251
Options, Exercisable at end of period | shares	4,251
Weighted Average Exercise Price, Outstanding at beginning of year | $ / shares	$ 10.97
Weighted Average Exercise Price, Exercised | $ / shares	10.96
Weighted Average Exercise Price, Outstanding at end of period | $ / shares	10.97
Weighted Average Exercise Price, Exercisable at end of period | $ / shares	$ 10.97
Weighted Average Remaining Contractual Term (Years), Outstanding at end of period	1 year 1 month 13 days
Weighted Average Remaining Contractual Term (Years), Exercisable at end of period	1 year 1 month 13 days
Aggregate Intrinsic Value, Outstanding at end of period | $	$ 31,076
Aggregate Intrinsic Value, Exercisable at end of period | $	$ 31,076