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CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Additional paid-in capital
Accumulated deficit
Accumulated deficit
Cumulative Effect, Period of Adoption, Adjustment
Accumulated other comprehensive income
Class A common stock
Class A common stock
Common stock
Class B common stock
Class B common stock
Common stock
Beginning balance (in shares) at Dec. 31, 2019               87,072,000   213,101,000
Beginning balance at Dec. 31, 2019 $ 725,828 $ 556 $ 1,027,179 $ (301,706) $ 556 $ 61   $ 87   $ 207
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Issuance of common stock in connection with acquisition (in shares)               107,000    
Issuance of common stock in connection with acquisition 1,104   1,104              
Issuance of unvested restricted stock in connection with acquisition (in shares)               841,000    
Issuance of common stock upon exercise of stock options (in shares)                   1,503,000
Issuance of common stock upon exercise of stock options 2,675   2,674             $ 1
Repurchases of unvested common stock               (29,000)    
Issuance of common stock related to early exercised stock options (in shares)                   15,000
Vesting of shares issued upon early exercise of stock options 1,223   1,222             $ 1
Issuance of common stock related to settlement of RSUs (in shares)               32,000   1,123,000
Issuance of common stock related to settlement of RSUs 0   (1)             $ 1
Tax withholding on RSU settlement (in shares)               (11,000)   (397,000)
Tax withholding on RSU settlement (7,115)   (7,115)              
Conversion of Class B to Class A common stock (in shares)               66,610,000   66,610,000
Conversion of Class B to Class A common stock 0             $ 67   $ (67)
Stock-based compensation 13,481   13,481              
Net loss (32,746)     (32,746)       $ (10,876)   $ (21,870)
Other comprehensive income (loss) 1,346         1,346        
Ending balance (in shares) at Mar. 31, 2020               154,622,000   148,735,000
Ending balance at Mar. 31, 2020 706,352   1,038,544 (333,896)   1,407   $ 154   $ 143
Beginning balance (in shares) at Dec. 31, 2020             249,401,232 249,401,000 59,238,742 59,239,000
Beginning balance at Dec. 31, 2020 $ 816,940   1,236,993 (420,520)   163   $ 249   $ 55
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Issuance of common stock in connection with acquisition (in shares) 948,000                  
Issuance of common stock upon exercise of stock options (in shares) 1,282,000             321,000   926,000
Issuance of common stock upon exercise of stock options $ 7,965   7,963         $ 1   $ 1
Repurchases of unvested common stock               (60,000)    
Issuance of common stock related to early exercised stock options (in shares)                   35,000
Vesting of shares issued upon early exercise of stock options 1,031   1,030             $ 1
Issuance of common stock related to settlement of RSUs (in shares)               332,000   337,000
Issuance of common stock related to settlement of RSUs (1)   (1)             $ 0
Tax withholding on RSU settlement (in shares)                   (6,000)
Tax withholding on RSU settlement (530)   (530)              
Conversion of Class B to Class A common stock (in shares)               5,964,000   5,964,000
Conversion of Class B to Class A common stock 0             $ 6   $ (6)
Stock-based compensation 18,727   18,727              
Net loss (39,963)     (39,963)       $ (32,889)   $ (7,074)
Other comprehensive income (loss) (129)         (129)        
Ending balance (in shares) at Mar. 31, 2021             255,958,244 255,958,000 54,566,838 54,567,000
Ending balance at Mar. 31, 2021 $ 804,040   $ 1,264,182 $ (460,483)   $ 34   $ 256   $ 51