Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and of Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Millions | Total | Redeemable Convertible Preferred Stock [Member] | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Deficit [Member] |
Balance at Dec. 31, 2020 | $ (3.8) | | $ 0.7 | $ 690.7 | $ (695.2) |
Temporary Equity, Balance, shares at Dec. 31, 2020 | | 71,445 | | | |
Temporary Equity, Balance at Dec. 31, 2020 | | $ 398.3 | | | |
Balance, shares at Dec. 31, 2020 | | | 72,195 | | |
Stock-based compensation | 5.6 | | | 5.6 | |
Stock-based compensation, shares | | | 226 | | |
Issuance of common stock under equity plans, shares | | | 22 | | |
Accretion to redemption value of redeemable convertible preferred stock | (17.3) | | | (17.3) | |
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock | | $ 17.3 | | | |
Repurchase of common stock | (5.1) | | | (5.1) | |
Repurchase of common stock, shares | | | (930) | | |
Temporary Equity, Redeemable convertible preferred stock conversion, shares | | (3) | | | |
Redeemable convertible preferred stock conversion, shares | | | 5 | | |
Net income (loss) and comprehensive income (loss) | (61.8) | | | | (61.8) |
Balances at Jun. 30, 2021 | (82.4) | | $ 0.7 | 673.9 | (757) |
Temporary Equity, Balance, shares at Jun. 30, 2021 | | 71,442 | | | |
Temporary Equity, Balance at Jun. 30, 2021 | | $ 415.6 | | | |
Balance, shares at Jun. 30, 2021 | | | 71,518 | | |
Balance at Dec. 31, 2020 | (3.8) | | $ 0.7 | 690.7 | (695.2) |
Temporary Equity, Balance, shares at Dec. 31, 2020 | | 71,445 | | | |
Temporary Equity, Balance at Dec. 31, 2020 | | $ 398.3 | | | |
Balance, shares at Dec. 31, 2020 | | | 72,195 | | |
Net income (loss) and comprehensive income (loss) | (79.7) | | | | |
Balances at Dec. 31, 2021 | (121) | | $ 0.7 | 653.2 | (774.9) |
Temporary Equity, Balance, shares at Dec. 31, 2021 | | 71,442 | | | |
Temporary Equity, Balance at Dec. 31, 2021 | | $ 433.9 | | | |
Balance, shares at Dec. 31, 2021 | | | 70,026 | | |
Balance at Mar. 31, 2021 | (25.9) | | $ 0.7 | 683.9 | (710.5) |
Temporary Equity, Balance, shares at Mar. 31, 2021 | | 71,444 | | | |
Temporary Equity, Balance at Mar. 31, 2021 | | $ 406.8 | | | |
Balance, shares at Mar. 31, 2021 | | | 72,274 | | |
Stock-based compensation | 2.8 | | | 2.8 | |
Stock-based compensation, shares | | | 17 | | |
Issuance of common stock under equity plans, shares | | | 4 | | |
Accretion to redemption value of redeemable convertible preferred stock | (8.8) | | | (8.8) | |
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock | | $ 8.8 | | | |
Repurchase of common stock | (4) | | | (4) | |
Repurchase of common stock, shares | | | (781) | | |
Temporary Equity, Redeemable convertible preferred stock conversion, shares | | (2) | | | |
Redeemable convertible preferred stock conversion, shares | | | 4 | | |
Net income (loss) and comprehensive income (loss) | (46.5) | | | | (46.5) |
Balances at Jun. 30, 2021 | (82.4) | | $ 0.7 | 673.9 | (757) |
Temporary Equity, Balance, shares at Jun. 30, 2021 | | 71,442 | | | |
Temporary Equity, Balance at Jun. 30, 2021 | | $ 415.6 | | | |
Balance, shares at Jun. 30, 2021 | | | 71,518 | | |
Balance at Dec. 31, 2021 | (121) | | $ 0.7 | 653.2 | (774.9) |
Temporary Equity, Balance, shares at Dec. 31, 2021 | | 71,442 | | | |
Temporary Equity, Balance at Dec. 31, 2021 | | $ 433.9 | | | |
Balance, shares at Dec. 31, 2021 | | | 70,026 | | |
Stock-based compensation | 3.7 | | | 3.7 | |
Stock-based compensation, shares | | | 345 | | |
Issuance of common stock under equity plans, shares | | | 20 | | |
Accretion to redemption value of redeemable convertible preferred stock | (18.8) | | | (18.8) | |
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock | | $ 18.8 | | | |
Repurchase of common stock | (4.3) | | | (4.3) | |
Repurchase of common stock, shares | | | (1,152) | | |
Redeemable convertible preferred stock conversion | 0.2 | | | 0.2 | |
Temporary Equity, Redeemable convertible preferred stock conversion, shares | | (25) | | | |
Temporary Equity Redeemable convertible preferred stock conversion | | $ 0.2 | | | |
Redeemable convertible preferred stock conversion, shares | | | 45 | | |
Net income (loss) and comprehensive income (loss) | 15.4 | | | | 15.4 |
Balances at Jun. 30, 2022 | (124.8) | | $ 0.7 | 634 | (759.5) |
Temporary Equity, Balance, shares at Jun. 30, 2022 | | 71,417 | | | |
Temporary Equity, Balance at Jun. 30, 2022 | | $ 452.5 | | | |
Balance, shares at Jun. 30, 2022 | | | 69,284 | | |
Balance at Mar. 31, 2022 | (112.9) | | $ 0.7 | 645.2 | (758.8) |
Temporary Equity, Balance, shares at Mar. 31, 2022 | | 71,442 | | | |
Temporary Equity, Balance at Mar. 31, 2022 | | $ 443.1 | | | |
Balance, shares at Mar. 31, 2022 | | | 70,130 | | |
Stock-based compensation | 1.5 | | | 1.5 | |
Stock-based compensation, shares | | | 5 | | |
Accretion to redemption value of redeemable convertible preferred stock | (9.6) | | | (9.6) | |
Temporary Equity, Accretion to redemption value of redeemable convertible preferred stock | | $ 9.6 | | | |
Repurchase of common stock | (3.3) | | | (3.3) | |
Repurchase of common stock, shares | | | (896) | | |
Redeemable convertible preferred stock conversion | 0.2 | | | 0.2 | |
Temporary Equity, Redeemable convertible preferred stock conversion, shares | | (25) | | | |
Temporary Equity Redeemable convertible preferred stock conversion | | $ 0.2 | | | |
Redeemable convertible preferred stock conversion, shares | | | 45 | | |
Net income (loss) and comprehensive income (loss) | (0.7) | | | | (0.7) |
Balances at Jun. 30, 2022 | $ (124.8) | | $ 0.7 | $ 634 | $ (759.5) |
Temporary Equity, Balance, shares at Jun. 30, 2022 | | 71,417 | | | |
Temporary Equity, Balance at Jun. 30, 2022 | | $ 452.5 | | | |
Balance, shares at Jun. 30, 2022 | | | 69,284 | | |