Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' (Deficit) Equity (Unaudited) - USD ($) $ in Thousands | Total | Cumulative- Effect of Accounting Change Due to Adoption | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit | Accumulated DeficitCumulative- Effect of Accounting Change Due to Adoption | Redeemable Convertible Preferred Stock |
Beginning balance at Dec. 31, 2019 | $ (253,758) | $ (56) | $ 3 | $ 47,043 | $ 20 | $ (300,824) | $ (56) | |
Beginning balance, shares at Dec. 31, 2019 | | | | | | | | 78,863,035 |
Beginning balance at Dec. 31, 2019 | | | | | | | | $ 442,897 |
Beginning balance, shares at Dec. 31, 2019 | | | 25,394,082 | | | | | |
Accounting Standards Update [Extensible List] | | us-gaap:AccountingStandardsUpdate201613Member | | | | | us-gaap:AccountingStandardsUpdate201613Member | |
Exercise of stock options | 5,727 | | | 5,727 | | | | |
Exercise of stock options, shares | | | 1,726,099 | | | | | |
Issuance of Series I redeemable convertible preferred stock for cash, net of issuance costs | | | | | | | | $ 152,941 |
Issuance of Series I redeemable convertible preferred stock for cash, net of issuance costs, shares | | | | | | | | 4,355,502 |
Stock-based compensation | 5,300 | | | 5,300 | | | | |
Stock-based compensation | | | | | | | | $ 683 |
Foreign currency translation adjustment | (104) | | | | (104) | | | |
Net loss | (19,034) | | | | | (19,034) | | |
Ending balance at Mar. 31, 2020 | (261,925) | | $ 3 | 58,070 | (84) | (319,914) | | |
Ending balance, shares at Mar. 31, 2020 | | | | | | | | 83,218,537 |
Ending balance at Mar. 31, 2020 | | | | | | | | $ 596,521 |
Ending balance, shares at Mar. 31, 2020 | | | 27,120,181 | | | | | |
Beginning balance at Dec. 31, 2019 | (253,758) | $ (56) | $ 3 | 47,043 | 20 | (300,824) | $ (56) | |
Beginning balance, shares at Dec. 31, 2019 | | | | | | | | 78,863,035 |
Beginning balance at Dec. 31, 2019 | | | | | | | | $ 442,897 |
Beginning balance, shares at Dec. 31, 2019 | | | 25,394,082 | | | | | |
Net loss | (48,736) | | | | | | | |
Ending balance at Sep. 30, 2020 | (265,199) | | $ 3 | 84,359 | 55 | (349,616) | | |
Ending balance, shares at Sep. 30, 2020 | | | | | | | | 83,614,676 |
Ending balance at Sep. 30, 2020 | | | | | | | | $ 612,876 |
Ending balance, shares at Sep. 30, 2020 | | | 28,918,169 | | | | | |
Beginning balance at Mar. 31, 2020 | (261,925) | | $ 3 | 58,070 | (84) | (319,914) | | |
Beginning balance, shares at Mar. 31, 2020 | | | | | | | | 83,218,537 |
Beginning balance at Mar. 31, 2020 | | | | | | | | $ 596,521 |
Beginning balance, shares at Mar. 31, 2020 | | | 27,120,181 | | | | | |
Exercise of stock options | 4,497 | | | 4,497 | | | | |
Exercise of stock options, shares | | | 703,096 | | | | | |
Issuance of Series I redeemable convertible preferred stock for cash, net of issuance costs | | | | | | | | $ 4,991 |
Issuance of Series I redeemable convertible preferred stock for cash, net of issuance costs, shares | | | | | | | | 132,046 |
Stock-based compensation | 6,124 | | | 6,124 | | | | |
Stock-based compensation | | | | | | | | $ 683 |
Foreign currency translation adjustment | 72 | | | | 72 | | | |
Net loss | (13,749) | | | | | (13,749) | | |
Ending balance at Jun. 30, 2020 | (264,981) | | $ 3 | 68,691 | (12) | (333,663) | | |
Ending balance, shares at Jun. 30, 2020 | | | | | | | | 83,350,583 |
Ending balance at Jun. 30, 2020 | | | | | | | | $ 602,195 |
Ending balance, shares at Jun. 30, 2020 | | | 27,823,277 | | | | | |
Exercise of stock options | 6,325 | | | 6,325 | | | | |
Exercise of stock options, shares | | | 1,092,892 | | | | | |
Issuance of Series I redeemable convertible preferred stock for cash, net of issuance costs | | | | | | | | $ 9,990 |
Issuance of Series I redeemable convertible preferred stock for cash, net of issuance costs, shares | | | | | | | | 264,093 |
Beneficial conversion feature on Series I redeemable convertible preferred stock | 547 | | | 547 | | | | $ (547) |
Recognition of beneficial conversion feature as a deemed dividend | (547) | | | (547) | | | | 547 |
Vesting of RSUs, shares | | | 2,000 | | | | | |
Stock-based compensation | 9,343 | | | 9,343 | | | | |
Stock-based compensation | | | | | | | | $ 691 |
Foreign currency translation adjustment | 67 | | | | 67 | | | |
Net loss | (15,953) | | | | | (15,953) | | |
Ending balance at Sep. 30, 2020 | (265,199) | | $ 3 | 84,359 | 55 | (349,616) | | |
Ending balance, shares at Sep. 30, 2020 | | | | | | | | 83,614,676 |
Ending balance at Sep. 30, 2020 | | | | | | | | $ 612,876 |
Ending balance, shares at Sep. 30, 2020 | | | 28,918,169 | | | | | |
Beginning balance at Dec. 31, 2020 | $ (272,102) | | $ 3 | 124,755 | 187 | (397,047) | | |
Beginning balance, shares at Dec. 31, 2020 | 85,331,278 | | | | | | | 85,331,278 |
Beginning balance at Dec. 31, 2020 | $ 727,474 | | | | | | | $ 727,474 |
Beginning balance, shares at Dec. 31, 2020 | | | 30,707,113 | | | | | |
Exercise of stock options | 11,038 | | | 11,038 | | | | |
Exercise of stock options, shares | | | 1,264,484 | | | | | |
Stock-based compensation | 9,710 | | | 9,710 | | | | |
Stock-based compensation | | | | | | | | $ 676 |
Foreign currency translation adjustment | (24) | | | | (24) | | | |
Net loss | (13,732) | | | | | (13,732) | | |
Ending balance at Mar. 31, 2021 | (265,110) | | $ 3 | 145,503 | 163 | (410,779) | | |
Ending balance, shares at Mar. 31, 2021 | | | | | | | | 85,331,278 |
Ending balance at Mar. 31, 2021 | | | | | | | | $ 728,150 |
Ending balance, shares at Mar. 31, 2021 | | | 31,971,597 | | | | | |
Beginning balance at Dec. 31, 2020 | $ (272,102) | | $ 3 | 124,755 | 187 | (397,047) | | |
Beginning balance, shares at Dec. 31, 2020 | 85,331,278 | | | | | | | 85,331,278 |
Beginning balance at Dec. 31, 2020 | $ 727,474 | | | | | | | $ 727,474 |
Beginning balance, shares at Dec. 31, 2020 | | | 30,707,113 | | | | | |
Exercise of stock options, shares | 3,439,021 | | | | | | | |
Net loss | $ (214,193) | | | | | | | |
Ending balance at Sep. 30, 2021 | $ 1,121,585 | | $ 13 | 1,733,411 | (599) | (611,240) | | |
Ending balance, shares at Sep. 30, 2021 | 0 | | | | | | | |
Ending balance, shares at Sep. 30, 2021 | | | 131,956,462 | | | | | |
Beginning balance at Mar. 31, 2021 | $ (265,110) | | $ 3 | 145,503 | 163 | (410,779) | | |
Beginning balance, shares at Mar. 31, 2021 | | | | | | | | 85,331,278 |
Beginning balance at Mar. 31, 2021 | | | | | | | | $ 728,150 |
Beginning balance, shares at Mar. 31, 2021 | | | 31,971,597 | | | | | |
Exercise of stock options | 17,658 | | | 17,658 | | | | |
Exercise of stock options, shares | | | 1,644,603 | | | | | |
Stock-based compensation | 138,055 | | | 138,055 | | | | |
Stock-based compensation | | | | | | | | 225 |
Conversion of redeemable convertible preferred stock to common stock upon initial public offering | 728,375 | | $ 9 | 728,366 | | | | $ (728,375) |
Conversion of redeemable convertible preferred stock to common stock upon initial public offering, shares | | | 85,331,278 | | | | | (85,331,278) |
Issuance of common stock upon initial public offering,net of underwriting discounts and offering costs | 657,618 | | $ 1 | 657,617 | | | | |
Issuance of common stock upon initial public offering, net of underwriting discounts and offering costs, shares | | | 10,410,000 | | | | | |
Issuance of common stock, net of common stock with held for tax liability, upon settlement of restricted stock units | (15) | | | (15) | | | | |
Issuance of common stock, net of common stock withheld for tax liability, upon settlement of restricted stock units, shares | | | 1,709,527 | | | | | |
Foreign currency translation adjustment | (200) | | | | (200) | | | |
Net loss | (149,719) | | | | | (149,719) | | |
Ending balance at Jun. 30, 2021 | 1,126,662 | | $ 13 | 1,687,184 | (37) | (560,498) | | |
Ending balance, shares at Jun. 30, 2021 | | | 131,067,005 | | | | | |
Exercise of stock options | 5,782 | | | 5,782 | | | | |
Exercise of stock options, shares | | | 529,934 | | | | | |
Stock-based compensation | 40,434 | | | 40,434 | | | | |
Issuance of common stock upon settlement of restricted stock units | | | 359,523 | | | | | |
Offering costs | 11 | | | 11 | | | | |
Foreign currency translation adjustment | (562) | | | | (562) | | | |
Net loss | (50,742) | | | | | (50,742) | | |
Ending balance at Sep. 30, 2021 | $ 1,121,585 | | $ 13 | $ 1,733,411 | $ (599) | $ (611,240) | | |
Ending balance, shares at Sep. 30, 2021 | 0 | | | | | | | |
Ending balance, shares at Sep. 30, 2021 | | | 131,956,462 | | | | | |