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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Income Statement [Abstract]    
Total revenues $ 43,447 $ 42,600
Cost of revenues 25,508 25,129
Gross profit 17,939 17,471
Operating expenses:    
Research and development 3,682 4,006
Sales and marketing 14,852 16,782
General and administrative 8,379 9,551
Total operating expenses 26,913 30,339
Loss from operations (8,974) (12,868)
Other income, net 209 92
Loss from operations before provision for income taxes (8,765) (12,776)
Provision for income taxes 48 37
Net loss $ (8,813) $ (12,813)
Net loss per share:    
Basic $ (0.64) $ (1.05)
Diluted $ (0.64) $ (1.05)
Weighted average shares used in computing net loss per common share:    
Basic 13,707 12,199
Diluted 13,707 12,199