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Stockholders' Deficit (Details) $ / shares in Units, $ in Millions |  |  |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2020 USD ($) | Sep. 21, 2020 $ / shares shares | May 11, 2020 shares | May 08, 2020 shares | Jan. 06, 2020 shares | Dec. 20, 2019 shares | Jun. 18, 2019 USD ($) $ / shares shares | Jun. 17, 2019 shares | Jan. 31, 2021 vote shares | Feb. 02, 2020 shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Offering costs | $ | $ 0.6 |  |  |  |  |  | $ 6.2 |  |  |
Common stock outstanding (in shares) |  |  |  |  |  |  |  | 100 |  |
Common stock conversion ratio |  |  |  |  |  |  | 1 |  |  |
IPO |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 22.00 |  |  |
Net proceeds | $ |  |  |  |  |  |  | $ 110.3 |  |  |
Equity Offering |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock (in dollars per share) | $ / shares |  | $ 54.40 |  |  |  |  |  |  |  |
Net proceeds | $ | $ 318.4 |  |  |  |  |  |  |  |  |
Over-Allotment Option |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock (in dollars per share) | $ / shares |  | $ 54.40 |  |  |  |  |  |  |  |
Class A common stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock outstanding (in shares) |  |  |  |  |  |  | 53,475,000 |  | 97,708,518 | 66,445,422
Conversion of stock (in shares) |  |  |  |  | 3,850,000 | 6,352,546 | 47,875,000 |  |  |
Common stock number of votes per share | vote |  |  |  |  |  |  |  |  | 1 |
Class A common stock | Buddy Chester Sub LLC |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Conversion of stock (in shares) |  |  |  | 17,584,098 |  |  |  |  |  |
Forward purchase agreement (in shares) |  |  | 17,584,098 |  |  |  |  |  |  |
Class A common stock | IPO |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock (in shares) |  |  |  |  |  |  | 5,600,000 |  |  |
Class A common stock | Equity Offering |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock (in shares) |  | 5,100,000 |  |  |  |  |  |  |  |
Class A common stock | Over-Allotment Option |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Sale of stock (in shares) |  | 765,000 |  |  |  |  |  |  |  |
Class B common stock |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock outstanding (in shares) |  |  |  |  |  |  | 345,125,000 |  | 317,338,356 | 334,922,454
Conversion of stock (in shares) |  |  |  |  | (3,850,000) | (6,352,546) | (47,875,000) | 393,000,000 |  |
Common stock conversion ratio |  |  |  |  |  |  |  |  | 1 |
Common stock number of votes per share | vote |  |  |  |  |  |  |  |  | 10 |
Percentage of outstanding stock |  |  |  |  |  |  |  |  | 7.50% |
Class B common stock | Buddy Chester Sub LLC |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |
Conversion of stock (in shares) |  |  |  | (17,584,098) |  |  |  |  |  |

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