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Equity-Based Compensation - Restricted Stock (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Dec. 10, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Class B Units |  |  |  |  |
Shares |  |  |  |  |
Granted |  |  | 1,357,404 |  |
Forfeited |  |  | (377,626) |  |
Non-vested restricted stock Ending balance |  |  | 6,328,153 |  | 6,328,153
Weighted Average Grant Date Fair Value |  |  |  |  |
Compensation expense |  | $ 8,165 | $ 1,181 | $ 20,846 | $ 2,286
Restricted Stock |  |  |  |  |
Shares |  |  |  |  |
Non-vested restricted stock beginning balance |  |  |  | 5,941,693 |
Granted |  |  |  | 0 |
Vested |  |  |  | (1,724,979) |
Forfeited |  |  |  | (141,057) |
Non-vested restricted stock Ending balance |  | 4,075,657 |  | 4,075,657 |
Share price | $ 23.00 |  |  |  |
Issuance of restricted stock (in shares) | 5,941,693 |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |
Non-vested restricted stock of beginning balance (in dollars per share) |  |  |  | $ 23.00 |
Vested (in dollars per share) |  |  |  | 23.00 |
Forfeited (in dollars per share) |  |  |  | 23.00 |
Non-vested restricted stock of ending balance (in dollars per share) |  | $ 23.00 |  | $ 23.00 |
Time Based Class B Units |  |  |  |  |
Equity-Based Compensation |  |  |  |  |
Service period |  |  |  | 5 years |
Weighted Average Grant Date Fair Value |  |  |  |  |
Compensation expense |  | $ 767 |  | $ 2,298 |
Unrecognized share-based compensation expense |  | 7,230 |  | $ 7,230 |
Unrecognized share-based compensation expense, recognition period |  |  |  | 35 months 6 days |
Performance Based Class B Units |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |
Compensation expense |  | 3,120 |  | $ 10,144 |
Unrecognized share-based compensation expense |  | $ 14,072 |  | $ 14,072 |
Unrecognized share-based compensation expense, recognition period |  |  |  | 26 months |

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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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