Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Consolidated Balance Sheets
Accounts receivable, allowance for doubtful accounts	$ 1,474	$ 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	38,810,704	38,402,291
Common stock, shares outstanding	38,810,704	38,402,291