Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data	Oct. 01, 2011	Dec. 31, 2010
Current assets:
Allowances for doubtful accounts and sales returns	$ 7,009	$ 6,196
Stockholders' equity:
Preferred stock, par value per share	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	152,403,000	151,054,000
Common stock, shares outstanding	89,584,000	91,848,000
Treasury stock, shares	62,819,000	59,206,000