Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 29, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Accounts receivable, allowance	$ 2,159	$ 1,884
Common stock, par value	$ 0.8333	$ 0.8333
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares outstanding	68,863,974	67,820,798
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0