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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Revision of Prior Period, Accounting Standards Update, Adjustment
Common Stock
Additional Paid-in Capital
Additional Paid-in Capital
Revision of Prior Period, Accounting Standards Update, Adjustment
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Accumulated Deficit
Revision of Prior Period, Accounting Standards Update, Adjustment
Balance at Dec. 28, 2018 $ 132,426   $ 442 $ 289,584   $ (1,320) $ (156,280)  
Balance (Lease Accounting Standard) at Dec. 28, 2018   $ 113           $ 113
Balance (Nonemployee Share-Based Payment Standard) at Dec. 28, 2018         $ (315)     $ 315
Balance (in shares) at Dec. 28, 2018     44,195          
Net income (loss) 5,281           5,281  
Other comprehensive income (loss) (282)         (282)    
Common stock issued upon exercise of options 1,110   $ 1 1,109        
Common stock issued upon exercise of options (in shares)     126          
Stock-based compensation $ 5,685     5,685        
Unvested restricted stock (in shares) (11)   11          
Vested restricted stock $ 2   $ 2          
Vested restricted stock (in shares)     202          
Balance at Jun. 28, 2019 144,335   $ 445 296,063   (1,602) (150,571)  
Balance (in shares) at Jun. 28, 2019     44,534          
Balance at Mar. 29, 2019 137,338   $ 444 292,722   (1,343) (154,485)  
Balance (in shares) at Mar. 29, 2019     44,447          
Net income (loss) 3,914           3,914  
Other comprehensive income (loss) (259)         (259)    
Common stock issued upon exercise of options 487   $ 1 486        
Common stock issued upon exercise of options (in shares)     52          
Stock-based compensation $ 2,855     2,855        
Unvested restricted stock (in shares) (10)   11          
Vested restricted stock (in shares)     24          
Balance at Jun. 28, 2019 $ 144,335   $ 445 296,063   (1,602) (150,571)  
Balance (in shares) at Jun. 28, 2019     44,534          
Balance at Jan. 03, 2020 159,884   $ 448 304,288   (3,048) (141,804)  
Balance (in shares) at Jan. 03, 2020     44,822          
Net income (loss) (1,306)           (1,306)  
Other comprehensive income (loss) 139         139    
Common stock issued upon exercise of options $ 9,557   $ 9 9,548        
Common stock issued upon exercise of options (in shares) 876   877          
Stock-based compensation $ 6,399     6,399        
Vested restricted stock 1   $ 1          
Vested restricted stock (in shares)     89          
Balance at Jul. 03, 2020 174,674   $ 458 320,235   (2,909) (143,110)  
Balance (in shares) at Jul. 03, 2020     45,788          
Balance at Apr. 03, 2020 164,967   $ 451 309,480   (3,026) (141,938)  
Balance (in shares) at Apr. 03, 2020     45,105          
Net income (loss) (1,172)           (1,172)  
Other comprehensive income (loss) 117         117    
Common stock issued upon exercise of options 7,553   $ 7 7,546        
Common stock issued upon exercise of options (in shares)     681          
Stock-based compensation 3,209     3,209        
Vested restricted stock (in shares)     2          
Balance at Jul. 03, 2020 $ 174,674   $ 458 $ 320,235   $ (2,909) $ (143,110)  
Balance (in shares) at Jul. 03, 2020     45,788