Stock Option Activity (Detail) - Stock Option - $ / shares shares in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding at beginning of year	73	1,846	4,353
Options, Exercised	(73)	(1,773)	(2,507)
Options, Outstanding at end of year		73	1,846
Options, Exercisable at end of year		73	1,846
Weighted Average Exercise Price, Outstanding at beginning of year	$ 10.87	$ 10.89	$ 10.97
Weighted Average Exercise Price, Exercised	$ 10.87	10.89	11.02
Weighted Average Exercise Price, Outstanding at end of year		$ 10.87	$ 10.89