Earnings Per Share - Computations of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 27, 2014	Dec. 28, 2013	Dec. 27, 2014	Dec. 28, 2013
Earnings Per Share [Abstract]
Net income from continuing operations	$ 16,953	$ 16,343	$ 33,321	$ 29,953
Less: Income allocable to participating securities	(303)	(237)	(536)	(418)
Net income from continuing operations available to common stockholders	16,650	16,106	32,785	29,535
Net loss from discontinued operations	0	(8,423)	0	(8,212)
Net income available to common stockholders	$ 16,650	$ 7,683	$ 32,785	$ 21,323
Basic earnings per share:
Weighted average shares outstanding, basic (in shares)	19,654,000	19,547,000	19,641,000	19,488,000
Basic earnings per common share from continuing operations (in dollars per share)	$ 0.85	$ 0.82	$ 1.67	$ 1.52
Basic earnings per common share from discontinued operations (in dollars per share)	$ 0.00	$ (0.43)	$ 0.00	$ (0.42)
Basic earnings per common share (in dollars per share)	$ 0.85	$ 0.39	$ 1.67	$ 1.09
Diluted earnings per share:
Weighted average shares outstanding, basic (in shares)	19,654,000	19,547,000	19,641,000	19,488,000
Weighted average effect of non-vested restricted stock grants and assumed exercise of stock options (in shares)	385,000	393,000	378,000	400,000
Weighted average shares outstanding, diluted (In shares)	20,039,000	19,940,000	20,019,000	19,888,000
Diluted earnings per common share from continuing operations (in dollars per share)	$ 0.83	$ 0.81	$ 1.64	$ 1.49
Diluted earnings per common share from discontinued operations (in dollars per share)	$ 0.00	$ (0.42)	$ 0.00	$ (0.41)
Diluted earnings per common share (in dollars per share)	$ 0.83	$ 0.39	$ 1.64	$ 1.07
Shares excluded from computation of diluted earnings per share (in shares)	90,000	156,000	190,000	111,000