Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share (Details)

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Net Loss Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Numerator:        
Net loss $ (2,711) $ (5,308) $ (5,195) $ (8,118)
Denominator:        
Weighted-average common shares outstanding (basic) 30,854 30,571 30,716 30,522
Common equivalent shares from common stock options and warrants            
Weighted-average common shares outstanding (diluted) 30,854 30,571 30,716 30,522
Basic and diluted net loss per share $ (0.09) $ (0.17) $ (0.17) $ (0.27)