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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 29, 2014
Dec. 28, 2013
Accounts receivable, allowance for doubtful accounts $ 217 $ 207
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      
Convertible preferred stock, shares outstanding      
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 30,000,000 30,000,000
Common stock, shares issued 9,978,973 9,899,483
Common stock, shares outstanding 9,978,973 9,899,483