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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Beginning Balance, value at Dec. 30, 2017 $ 30,522 $ 126 $ 59,385   $ (28,989)
Beginning Balance, shares at Dec. 30, 2017   11,596,274      
Proceeds from issuance of common stock, net of issuance costs 10,475 $ 19 10,456    
Proceeds from issuance of common stock, net of issuance costs, Shares   1,916,667      
Issuance of common stock under stock option plan $ 98   98    
Issuance of common stock under stock option plan, shares 24,050 24,050      
Employee stock-based compensation expense $ 1,803   1,803    
Release of restricted stock, value (194)   (194)    
Release of restricted stock, shares   65,061      
Other comprehensive income 70     $ 70  
Net loss (12,813)       (12,813)
Ending Balance, value at Dec. 29, 2018 $ 29,961 $ 145 71,548 70 (41,802)
Ending Balance, shares at Dec. 29, 2018 13,602,052 13,602,052      
Issuance of common stock under stock option plan, shares 210 210      
Employee stock-based compensation expense $ 1,703   1,703    
Release of restricted stock, value (156) $ (2) (158)    
Release of restricted stock, shares   182,971      
Other comprehensive income 10     10  
Net loss (8,813)       (8,813)
Ending Balance, value at Dec. 28, 2019 $ 22,705 $ 147 $ 73,093 $ 80 $ (50,615)
Ending Balance, shares at Dec. 28, 2019 13,785,233 13,785,233