Summary of Stock Option Activity Awards (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of year, Shares	5,779,597	8,602,626	22,702,534
Granted, Shares	0	0	0
Forfeited, Shares	(108,818)	(574,967)	(1,323,664)
Exercised, Shares	(1,614,243)	(2,248,062)	(12,776,244)
Outstanding at end of year, Shares	4,056,536	5,779,597	8,602,626
Outstanding at beginning of year, Weighted Average Exercise Price	$ 4.53	$ 4.53	$ 4.48
Granted, Weighted Average Exercise Price	0	0	0
Forfeited, Weighted Average Exercise Price	5.04	9.29	10.46
Exercised, Weighted Average Exercise Price	1.89	3.34	3.83
Outstanding at end of year, Weighted Average Exercise Price	$ 5.56	$ 4.53	$ 4.53