Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 29, 2013	Dec. 29, 2012
Consolidated Balance Sheets
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,354	$ 1,548
Common stock, par value (in dollars per share)	$ 0.1167	$ 0.1167
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	39,101,228	38,402,291
Common stock, shares outstanding	39,101,228	38,402,291