Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2012	Dec. 30, 2011
Preferred stock, no par value
Preferred stock, shares authorized	3,000	3,000
Preferred stock, shares outstanding	0	0
Common stock, no par value
Common stock, shares authorized	180,000	180,000
Common stock, shares issued	126,075	123,663
Common stock, shares outstanding	126,075	123,663