Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 148	$ 162
Convertible preferred stock, par value	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized	2,000,000	2,000,000
Convertible preferred stock, shares issued	500,000	500,000
Convertible preferred stock, shares outstanding	500,000	500,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	8,960,397	8,917,824
Common stock, shares outstanding	8,960,397	8,917,824
Treasury stock, at cost	419,784	167,885