Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Consolidated Balance Sheets [Abstract]
Reserves, accounts receivable	$ 94,739	$ 95,639
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	112,500,000	112,500,000
Common stock, shares issued	52,184,730	51,712,674
Treasury stock, shares	11,790,428	7,445,166