Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 17, 2018	Jun. 18, 2017	Jun. 17, 2018	Jun. 18, 2017
Earnings Per Share [Abstract]
Net income available to common stockholders-basic and diluted	$ 77,408	$ 65,741	$ 166,235	$ 128,210
Basic weighted average number of shares	42,044,035	47,972,526	42,433,073	47,906,187
Earnings per share - basic	$ 1.84	$ 1.37	$ 3.92	$ 2.68
Diluted weighted average number of shares	43,582,996	49,776,821	43,981,253	49,741,794
Earnings per share - diluted	$ 1.78	$ 1.32	$ 3.78	$ 2.58