Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 29, 2012	Sep. 29, 2012
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,325	$ 1,011
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	48,856,000	48,851,000
Common stock, shares outstanding	34,840,000	35,097,000
Treasury stock, shares	14,016,000	13,754,000