| Pay vs Performance Disclosure - USD ($) | 5 Months Ended | 12 Months Ended | 31 Months Ended |
| Dec. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Jul. 31, 2022 |
| Pay vs Performance Disclosure [Table] | | | | | |
| Pay vs Performance [Table Text Block] | | Year Summary Summary Compensation Compensation Average Average Value of Initial Fixed $100 Investment Based On: Net Income (Loss) Total Stockholder Return Peer Group Total Stockholder Return 2022 202,028 122,651,735 (13,866,816) 153,878,150 411,737 (11,364,015) 99.51 101.37 (96,047) 2021 199,100 — (32,587,745) — 11,394,930 (25,236,449) 148.98 178.15 316,438 2020 199,100 — 81,738,645 — 4,047,470 49,261,185 270.08 178.79 (128,323) | | | |
| Named Executive Officers, Footnote [Text Block] | | The dollar amounts reported are the amounts of total compensation reported in our Summary Compensation Table (SCT) above for the covered fiscal year. For the years reported in the table, Benjamin Silberman was our PEO from January 2020 to July 2022, and Bill Ready was our PEO from July 2022 to December 2022.The non-principal executive officer (PEO) named executive officers (NEOs) represent the following individuals for each of the fiscal years shown: Year Non- PEO NEOs 2022 Todd Morgenfeld, Christine Flores, Naveen Gavini, Wanji Walcott 2021 Evan Sharp, Todd Morgenfeld, Christine Flores, Naveen Gavini 2020 Evan Sharp, Todd Morgenfeld, Christine Flores, Françoise Brougher | | | |
| Adjustment To PEO Compensation, Footnote [Text Block] | | Year Reported Summary Compensation Table Total for First PEO Reported Value of Equity Awards (a) Equity Award Adjustments (b) Compensation Actually Paid to First PEO 2022 202,028 — (14,068,844) (13,866,816) 2021 199,100 — (32,786,845) (32,587,745) 2020 199,100 — 81,539,545 81,738,645 Year Reported Summary Compensation Table Total for Second PEO Reported Value of Equity Awards (a) Equity Award Adjustments (b) Compensation Actually Paid to Second PEO 2022 122,651,735 122,348,083 153,574,498 153,878,150 First PEO Year Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value Total 2022 — (8,449,012) — (5,619,832) — — (14,068,844) 2021 — (34,475,010) — 1,688,165 — — (32,786,845) 2020 — 77,191,365 — 4,348,180 — — 81,539,545 Second PEO Year Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value Total 2022 144,492,263 — 9,082,235 — — — 153,574,498 Average Non-PEO NEOs Year Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value Total 2022 — (3,738,316) — (3,757,769) (4,279,667) — (11,775,752) 2021 — (24,500,725) — (1,061,940) — — (25,562,665) 2020 15,418,903 36,700,249 691,287 3,467,016 (7,300,668) — 48,976,787 | | | |
| Non-PEO NEO Average Total Compensation Amount | | $ 411,737 | $ 11,394,930 | $ 4,047,470 | |
| Non-PEO NEO Average Compensation Actually Paid Amount | | $ (11,364,015) | (25,236,449) | 49,261,185 | |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | | Year Average Reported Summary Compensation Table Total for Non-PEO NEOs Average Reported Value of Equity Awards (a) Average Equity Award Adjustments (b) Average Compensation Actually Paid to Non-PEO NEOs 2022 411,737 — (11,775,752) (11,364,015) 2021 11,394,930 11,068,714 (25,562,665) (25,236,449) 2020 4,047,470 3,763,072 48,976,787 49,261,185 First PEO Year Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value Total 2022 — (8,449,012) — (5,619,832) — — (14,068,844) 2021 — (34,475,010) — 1,688,165 — — (32,786,845) 2020 — 77,191,365 — 4,348,180 — — 81,539,545 Second PEO Year Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value Total 2022 144,492,263 — 9,082,235 — — — 153,574,498 Average Non-PEO NEOs Year Year End Fair Value of Equity Awards Granted in the Year and Unvested at Year End Year over Year Change in Fair Value of Outstanding and Unvested Equity Awards Fair Value as of Vesting Date of Equity Awards Granted and Vested in the Year Year over Year Change in Fair Value of Equity Awards Granted in Prior Years that Vested in the Year Fair Value at the End of the Prior Year of Equity Awards that Failed to Meet Vesting Conditions in the Year Value of Dividends or other Earnings Paid on Stock or Option Awards not Otherwise Reflected in Fair Value Total 2022 — (3,738,316) — (3,757,769) (4,279,667) — (11,775,752) 2021 — (24,500,725) — (1,061,940) — — (25,562,665) 2020 15,418,903 36,700,249 691,287 3,467,016 (7,300,668) — 48,976,787 | | | |
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | | CAP versus TSR Description of Relationship Between PEO and Other NEO Compensation Actually Paid and Company TSR The following chart sets forth the relationship between Compensation Actually Paid to our PEOs, the average of Compensation Actually Paid to our other NEOs, and the company’s cumulative TSR over the three most recently completed fiscal years. | | | |
| Compensation Actually Paid vs. Net Income [Text Block] | | CAP versus Net Income Description of Relationship Between PEO and Other NEO Compensation Actually Paid and Net Income The following chart sets forth the relationship between Compensation Actually Paid to our PEOs, the average of Compensation Actually Paid to our other NEOs, and our net income during the three most recently completed fiscal years. | | | |
| Total Shareholder Return Vs Peer Group [Text Block] | | TSR: Company versus Peer Group Description of Relationship Between Company TSR and Peer Group Total Shareholder Return (“TSR”) The following chart shows a comparison of the cumulative TSR, the Standard & Poor's 500 Stock Index (S&P 500 Index) and the Dow Jones Internet Composite Index (DJINET Composite Index). The graph uses the closing market price on April 18, 2019 of $24.40 per share as the initial value of our common stock. | | | |
| Total Shareholder Return Amount | | $ 99.51 | 148.98 | 270.08 | |
| Peer Group Total Shareholder Return Amount | | 101.37 | 178.15 | 178.79 | |
| Net Income (Loss) | | $ (96,047,000) | 316,438,000 | (128,323,000) | |
| PEO Name | Bill Ready | | | | Benjamin Silberman |
| Additional 402(v) Disclosure [Text Block] | | The grant date fair value of equity awards represents the total of the amounts reported in the “Stock Awards” and “Option Awards” columns in the Summary Compensation Table for the covered fiscal year. | | | |
| Benjamin Silberman [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| PEO Total Compensation Amount | | $ 202,028 | 199,100 | 199,100 | |
| PEO Actually Paid Compensation Amount | | (13,866,816) | (32,587,745) | 81,738,645 | |
| Bill Ready [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| PEO Total Compensation Amount | | 122,651,735 | 0 | 0 | |
| PEO Actually Paid Compensation Amount | | 153,878,150 | 0 | 0 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards Reported Value [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount | | 0 | 0 | 0 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Award Adjustments [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount | | (14,068,844) | (32,786,845) | 81,539,545 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards Granted During the Year, Unvested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | 0 | 0 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards Outstanding Year over Year, Unvested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | (8,449,012) | (34,475,010) | 77,191,365 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards Granted During the Year, Vested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | 0 | 0 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards Granted in Prior Years, Vested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | (5,619,832) | 1,688,165 | 4,348,180 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards that Failed to Meet Vesting Conditions [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | 0 | 0 | |
| PEO [Member] | Benjamin Silberman [Member] | Equity Awards, Value of Dividends and Other Earnings Paid Adjustment [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | 0 | 0 | |
| PEO [Member] | Bill Ready [Member] | Equity Awards Reported Value [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount | | 122,348,083 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Award Adjustments [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount | | 153,574,498 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Awards Granted During the Year, Unvested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 144,492,263 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Awards Outstanding Year over Year, Unvested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Awards Granted During the Year, Vested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 9,082,235 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Awards Granted in Prior Years, Vested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Awards that Failed to Meet Vesting Conditions [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | | | |
| PEO [Member] | Bill Ready [Member] | Equity Awards, Value of Dividends and Other Earnings Paid Adjustment [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | | | |
| Non-PEO NEO [Member] | Equity Awards Reported Value [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount | | 0 | 11,068,714 | 3,763,072 | |
| Non-PEO NEO [Member] | Equity Award Adjustments [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount | | (11,775,752) | (25,562,665) | 48,976,787 | |
| Non-PEO NEO [Member] | Equity Awards Granted During the Year, Unvested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | 0 | 15,418,903 | |
| Non-PEO NEO [Member] | Equity Awards Outstanding Year over Year, Unvested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | (3,738,316) | (24,500,725) | 36,700,249 | |
| Non-PEO NEO [Member] | Equity Awards Granted During the Year, Vested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | 0 | 0 | 691,287 | |
| Non-PEO NEO [Member] | Equity Awards Granted in Prior Years, Vested [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | (3,757,769) | (1,061,940) | 3,467,016 | |
| Non-PEO NEO [Member] | Equity Awards that Failed to Meet Vesting Conditions [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | (4,279,667) | 0 | (7,300,668) | |
| Non-PEO NEO [Member] | Equity Awards, Value of Dividends and Other Earnings Paid Adjustment [Member] | | | | | |
| Pay vs Performance Disclosure [Table] | | | | | |
| Adjustment to Compensation Amount, Equity Awards | | $ 0 | $ 0 | $ 0 | |
