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Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Apr. 03, 2021
Mar. 28, 2020
Numerator:    
Net loss $ (2,722) $ (978)
Dividends on Series A Convertible Preferred Stock   38
Net loss allocable to common shares $ (2,722) $ (1,016)
Denominator:    
Weighted-average common shares outstanding (basic and diluted) 48,760 36,871
Basic and diluted net loss per share $ (0.06) $ (0.03)