Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jul. 01, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets (Parenthetical)
Preferred stock, no par value
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares outstanding	0	0
Common stock, no par value
Common stock, shares authorized	180,000,000	180,000,000
Common stock, shares issued	122,749,000	120,939,000
Common stock, shares outstanding	122,749,000	120,939,000