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
	Jan. 02, 2016	Oct. 10, 2015	Jul. 18, 2015	Jan. 03, 2015	Oct. 04, 2014	Jul. 12, 2014	Apr. 25, 2015	Apr. 19, 2014	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Earnings Per Share [Abstract]
Net income	$ 32,246	$ 43,796	$ 51,760	$ 28,010	$ 44,599	$ 42,064	$ 61,389	$ 61,066	$ 189,191	$ 175,739	$ 230,894
Basic Earnings Per Common Share:
Basic weighted average shares outstanding per common share									210,793	209,683	207,935
Basic earnings per common share									$ 0.90	$ 0.84	$ 1.11
Diluted Earnings Per Common Share:
Basic weighted average shares outstanding per common share									210,793	209,683	207,935
Add: Shares of common stock assumed issued upon exercise of stock options, vesting of performance-contingent restricted stock and deferred stock									2,563	3,409	3,992
Diluted weighted average shares outstanding per common share									213,356	213,092	211,927
Diluted earnings per common share									$ 0.89	$ 0.82	$ 1.09