Earnings Per Share - Computations of Basic and Diluted Earnings Per Share (Detail) (USD $)	3 Months Ended		9 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Mar. 30, 2013	Mar. 31, 2012
Basic earnings per share:
Net income (loss)	$ 13,582,000	$ (4,800,000)	$ 38,697,000	$ 12,959,000
Less: Income allocable to participating securities	(200,000)	0	(600,000)	0
Net income (loss) available to common stockholders	13,400,000	(4,800,000)	38,100,000	13,000,000
Weighted average shares outstanding, basic (in shares)	19,053,000	18,502,000	18,858,000	18,475,000
Basic earnings per common share (in dollars per share)	$ 0.70	$ (0.26)	$ 2.02	$ 0.70
Diluted earnings per share:
Net income (loss) available to common stockholders	$ 13,400,000	$ (4,800,000)	$ 38,100,000	$ 13,000,000
Weighted average shares outstanding, basic (in shares)	19,053,000	18,502,000	18,858,000	18,475,000
Weighted average effect of non-vested restricted stock grants and assumed exercise of stock options (in shares)	377,000	0	301,000	190,000
Weighted average shares outstanding, diluted (In shares)	19,430,000	18,502,000	19,159,000	18,665,000
Diluted earnings per common share (in dollars per share)	$ 0.69	$ (0.26)	$ 1.99	$ 0.69
Shares excluded from computation of diluted earnings per share (in shares)	0	1,800,000	400,000	1,200,000