v3.10.0.1
Consolidated Statements of Convertible Preferred Stock And Stockholders' Equity (Deficit) - USD ($)
shares in Thousands
Total
Convertible Preferred Stock
Common Stock
Additional Paid-in Capital
Treasury Stock
Accumulated Other Comprehensive Loss
Accumulated Deficit
Balance at Dec. 26, 2015 $ (159,736,000)     $ 17,335,000     $ (177,071,000)
Balance, Shares at Dec. 26, 2015   80,844          
Balance at Dec. 26, 2015   $ 213,180,000          
Balance, Shares at Dec. 26, 2015     4,531        
Issuance of common stock shares upon exercise of common and preferred warrants, Shares     162        
Issuance of common stock upon exercise of stock options 438,000     438,000      
Issuance of common stock upon exercise of stock options, Shares     126        
Vesting of early exercised stock options 26,000     26,000      
Stock-based compensation expense 8,206,000     8,206,000      
Unrealized loss on short-term investments 0            
Net loss (42,758,000)           (42,758,000)
Balance at Dec. 31, 2016 (193,824,000)     26,005,000     (219,829,000)
Balance, Shares at Dec. 31, 2016   80,844          
Balance at Dec. 31, 2016   $ 213,180,000          
Balance, Shares at Dec. 31, 2016     4,819        
Issuance of common stock shares upon exercise of common and preferred warrants, Shares     2,165        
Issuance of common stock upon exercise of stock options 2,087,000   $ 1,000 2,086,000      
Issuance of common stock upon exercise of stock options, Shares     963        
Share repurchases (671,000)       $ (671,000)    
Share repurchases, Shares     (92)        
Vesting of early exercised stock options 62,000     62,000      
Stock-based compensation expense 10,953,000     10,953,000      
Issuance of common stock pursuant to an acquisition, Shares     108        
Issuance of common stock pursuant to an initial public offering, net of issuance costs of $3.1 million 131,646,000   $ 1,000 131,645,000      
Issuance of common stock pursuant to an initial public offering, net of issuance costs of $3.1 million, Shares     10,350        
Conversion of preferred stock into common stock pursuant to an initial public offering 213,180,000 $ (213,180,000) $ 8,000 213,172,000      
Conversion of preferred stock into common stock pursuant to an initial public offering, Shares   (80,844) 80,844        
Reclassification of preferred stock warrants liability to additional paid-in-capital upon conversion to common stock warrants 52,355,000     52,355,000      
Unrealized loss on short-term investments 0            
Net loss (63,509,000)           (63,509,000)
Balance at Dec. 31, 2017 152,279,000   $ 10,000 436,278,000 (671,000)   (283,338,000)
Balance, Shares at Dec. 31, 2017     99,157        
Share repurchases, Shares     (9)        
Vesting of early exercised stock options 239,000     239,000      
Issuance of common stock pursuant to equity incentive plans, net of taxes 25,034,000   $ 1,000 25,033,000      
Issuance of common stock pursuant to equity incentive plans, net of taxes, Shares     10,481        
Issuance of common stock pursuant to exercise of common stock warrants, net, Shares     141        
Stock-based compensation expense 37,674,000     37,674,000      
Cumulative effect change in accounting principle | Accounting Standards Update 2016-16 (40,000)           (40,000)
Cumulative effect change in accounting principle | Accounting Standards Update 2014-09 38,339,000           38,339,000
Unrealized loss on short-term investments (17,000)         $ (17,000)  
Net loss (8,857,000)           (8,857,000)
Balance at Dec. 31, 2018 $ 244,651,000   $ 11,000 $ 499,224,000 $ (671,000) $ (17,000) $ (253,896,000)
Balance, Shares at Dec. 31, 2018     109,770