Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 01, 2012	Jan. 02, 2011
Accounts receivable, allowance for doubtful accounts	$ 647	$ 1,054
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares issued (in shares)	21,374,451	17,402,934
Common stock, shares outstanding (in shares)	20,814,800	17,361,406
Treasury stock, shares (in shares)	559,651,000	41,528,000