Basic and Diluted Earnings per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						4 Months Ended		12 Months Ended
	Dec. 31, 2016	Oct. 08, 2016	Jul. 16, 2016	Jan. 02, 2016	Oct. 10, 2015	Jul. 18, 2015	Apr. 23, 2016	Apr. 25, 2015	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Earnings Per Share [Abstract]
Net income	$ 13,042	$ 40,216	$ 51,155	$ 32,246	$ 43,796	$ 51,760	$ 59,363	$ 61,389	$ 163,776	$ 189,191	$ 175,739
Basic Earnings Per Common Share:
Basic weighted average shares outstanding per common share									208,511	210,793	209,683
Basic earnings per common share	$ 0.06	$ 0.19	$ 0.25	$ 0.15	$ 0.21	$ 0.25	$ 0.28	$ 0.29	$ 0.79	$ 0.90	$ 0.84
Diluted Earnings Per Common Share:
Basic weighted average shares outstanding per common share									208,511	210,793	209,683
Add: Shares of common stock assumed issued upon exercise of stock options, vesting of performance-contingent restricted stock and deferred stock									1,843	2,563	3,409
Diluted weighted average shares outstanding per common share									210,354	213,356	213,092
Diluted earnings per common share	$ 0.06	$ 0.19	$ 0.24	$ 0.15	$ 0.21	$ 0.24	$ 0.28	$ 0.29	$ 0.78	$ 0.89	$ 0.82