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 Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Numerator:        
Net loss $ (1,696) $ (2,564) $ (2,484) $ (2,810)
Denominator:        
Weighted-average common shares outstanding (basic) 30,650,519 30,543,037 30,644,453 30,496,558
Common equivalent shares from common stock options and warrants            
Weighted-average common shares outstanding (diluted) 30,650,519 30,543,037 30,644,453 30,496,558
Basic and diluted net loss per share $ (0.06) $ (0.08) $ (0.08) $ (0.09)