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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Accumulated Deficit
Accumulated Deficit
Cumulative Effect, Period of Adoption, Adjustment
Beginning balances (in shares) at Dec. 30, 2017     72,532,176        
Beginning balances at Dec. 30, 2017 $ 458,637 $ (50) $ 73 $ 843,116 $ 3,021 $ (387,573) $ (50)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock pursuant to exercise of options for cash (in shares)     134,609        
Issuance of common stock pursuant to exercise of options for cash 1,158     1,158      
Issuance of common stock pursuant to vesting of restricted stock units (in shares)     862,630        
Issuance of common stock pursuant to vesting of restricted stock units, net of stock withheld for tax (5,791)     (5,791)      
Issuance of common stock under the Employee Stock Purchase Plan (in shares)     610,297        
Issuance of common stock under the Employee Stock Purchase Plan 6,662   $ 1 6,661      
Stock-based compensation 17,753     17,753      
Other comprehensive income (loss) (2,241)       (2,241)    
Net income 104,036         104,036  
Ending balances (in shares) at Dec. 29, 2018     74,139,712        
Ending balances at Dec. 29, 2018 580,164   $ 74 862,897 780 (283,587)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock pursuant to exercise of options for cash (in shares)     162,956        
Issuance of common stock pursuant to exercise of options for cash 1,176     1,176      
Issuance of common stock pursuant to vesting of restricted stock units (in shares)     918,051        
Issuance of common stock pursuant to vesting of restricted stock units, net of stock withheld for tax (8,025)   $ 1 (8,026)      
Issuance of common stock under the Employee Stock Purchase Plan (in shares)     544,271        
Issuance of common stock under the Employee Stock Purchase Plan 6,807   $ 1 6,806      
Stock-based compensation 22,968     22,968      
Other comprehensive income (loss) (1,439)       (1,439)    
Net income $ 39,346         39,346  
Ending balances (in shares) at Dec. 28, 2019 75,764,990   75,764,990        
Ending balances at Dec. 28, 2019 $ 640,997   $ 76 885,821 (659) (244,241)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Issuance of common stock pursuant to exercise of options for cash (in shares)     255,769        
Issuance of common stock pursuant to exercise of options for cash 2,135   $ 1 2,134      
Issuance of common stock pursuant to vesting of restricted stock units (in shares)     931,672        
Issuance of common stock pursuant to vesting of restricted stock units, net of stock withheld for tax (15,450)   $ 1 (15,451)      
Issuance of common stock under the Employee Stock Purchase Plan (in shares)     485,566        
Issuance of common stock under the Employee Stock Purchase Plan 7,875     7,875      
Stock-based compensation 23,459     23,459      
Other comprehensive income (loss) 6,545       6,545    
Net income $ 78,523         78,523  
Ending balances (in shares) at Dec. 26, 2020 77,437,997   77,437,997        
Ending balances at Dec. 26, 2020 $ 744,084   $ 78 $ 903,838 $ 5,886 $ (165,718)