Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jul. 05, 2015	Sep. 28, 2014
Stockholders’ equity:
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	15,000,000	15,000,000
Preferred stock, shares issued	0	0
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	175,000,000	175,000,000
Common stock, shares issued	81,070,256	80,127,387
Treasury stock at cost, shares	44,517,922	41,571,752