Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Consolidated Balance Sheets
Accounts receivable, net of allowance for doubtful accounts	$ 1,595	$ 2,532
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	38,286,818	37,634,403
Common stock, shares outstanding	38,286,818	37,634,403