Earnings Per Share - Computations of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014
Earnings Per Share [Abstract]
Net income	$ 18,493	$ 16,953	$ 34,756	$ 33,321
Less: Income allocable to participating securities	(271)	(303)	(498)	(536)
Net income available to common stockholders	$ 18,222	$ 16,650	$ 34,258	$ 32,785
Basic earnings per share:
Weighted average shares outstanding, basic (in shares)	19,665	19,654	19,696	19,641
Basic earnings per common share from continuing operations (in dollars per share)	$ 0.93	$ 0.85	$ 1.74	$ 1.67
Diluted earnings per share:
Weighted average shares outstanding, basic (in shares)	19,665	19,654	19,696	19,641
Weighted average effect of non-vested restricted stock grants and assumed exercise of stock options (in shares)	205	385	240	378
Weighted average shares outstanding, diluted (In shares)	19,870	20,039	19,936	20,019
Diluted earnings per common share from continuing operations (in dollars per share)	$ 0.92	$ 0.83	$ 1.72	$ 1.64
Shares excluded from computation of diluted earnings per share (in shares)	276	90	204	190