XML 18 R5.htm IDEA: XBRL DOCUMENT v3.10.0.1
CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Deficit
Redeemable convertible preferred stock, beginning balance at Dec. 31, 2015 $ 178,785      
Redeemable convertible preferred stock, beginning balance (in shares) at Dec. 31, 2015 65,464,387      
Increase (Decrease) in Temporary Equity [Roll Forward]        
Conversion of redeemable convertible preferred stock in connection with the initial public offering $ 0      
Redeemable convertible preferred stock, ending balance (in shares) at Dec. 31, 2016 65,464,387      
Redeemable convertible preferred stock, ending balance at Dec. 31, 2016 $ 178,785      
Beginning balance at Dec. 31, 2015 (21,434) $ 3 $ 81,799 $ (103,236)
Beginning balance (in shares) at Dec. 31, 2015   31,905,645    
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of common stock upon exercise of stock options and common stock warrants $ 270   270  
Issuance of common stock upon exercise of stock options (in shares) 272,591 272,591    
Stock-based compensation expense $ 7,266   7,266  
Conversion of redeemable convertible preferred stock warrant in connection with the initial public offering 0      
Net loss (16,233)     (16,233)
Ending balance at Dec. 31, 2016 (30,131) $ 3 89,335 (119,469)
Ending balance (in shares) at Dec. 31, 2016   32,178,236    
Increase (Decrease) in Temporary Equity [Roll Forward]        
Exercise of warrant on redeemable convertible preferred stock and related reclassification of redeemable convertible preferred stock warrant liability $ 404      
Exercise of warrant on redeemable convertible preferred stock and related reclassification of redeemable convertible preferred stock warrant liability (in shares) 83,181      
Repurchase and retirement of redeemable convertible preferred stock $ (12,703)      
Repurchase and retirement of redeemable convertible preferred stock (in shares) (4,268,489)      
Conversion of redeemable convertible preferred stock in connection with the initial public offering $ 0      
Redeemable convertible preferred stock, ending balance (in shares) at Dec. 31, 2017 61,279,079      
Redeemable convertible preferred stock, ending balance at Dec. 31, 2017 $ 166,486      
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of common stock upon exercise of stock options and common stock warrants $ 2,547   2,547  
Issuance of common stock upon exercise of stock options (in shares) 1,554,944 1,554,944    
Issuance of common stock to consultants (in shares)   7,143    
Repurchase and retirement of redeemable convertible preferred stock $ (6,506)   (6,506)  
Stock-based compensation expense 6,846   6,846  
Conversion of redeemable convertible preferred stock warrant in connection with the initial public offering 0      
Net loss (4,123)     (4,123)
Ending balance at Dec. 31, 2017 (31,367) $ 3 92,222 (123,592)
Ending balance (in shares) at Dec. 31, 2017   33,740,323    
Increase (Decrease) in Temporary Equity [Roll Forward]        
Conversion of redeemable convertible preferred stock in connection with the initial public offering $ (166,486)      
Conversion of redeemable convertible preferred stock in connection with the initial public offering (in shares) (61,279,079)      
Redeemable convertible preferred stock, ending balance (in shares) at Dec. 31, 2018 0      
Redeemable convertible preferred stock, ending balance at Dec. 31, 2018 $ 0      
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Issuance of common stock upon exercise of stock options and common stock warrants $ 8,160 $ 1 8,159  
Issuance of common stock upon exercise of stock options (in shares) 3,522,631 3,567,917    
Stock-based compensation expense $ 10,361   10,361  
Issuance of common stock in connection with the initial public offering, net of discounts and commissions 109,381 $ 1 109,380  
Issuance of common stock in connection with the initial public offering, net of discounts and commissions (in shares)   7,840,908    
Costs related to the initial public offering (6,282)   (6,282)  
Conversion of redeemable convertible preferred stock warrant in connection with the initial public offering 7,160   7,160  
Conversion of redeemable convertible preferred stock in connection with the initial public offering 166,486 $ 6 166,480  
Conversion of redeemable convertible preferred stock in connection with the initial public offering (in shares)   61,279,079    
Issuance of common stock for settlement of RSUs (in shares)   38,742    
Shares withheld related to net share settlement of RSUs (247)   (247)  
Shares withheld related to net share settlement of RSUs (in shares)   (12,648)    
Net loss (19,907)     (19,907)
Ending balance at Dec. 31, 2018 $ 243,745 $ 11 $ 387,233 $ (143,499)
Ending balance (in shares) at Dec. 31, 2018   106,454,321