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Equity-based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Equity Option Activity | Option activity for the nine months ended September 30, 2021 under the 2013 and 2019 Plans is as follows:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value (000's) |
Balance at January 1, 2021 |  |  | 4,121,225 |  |  | $ | 9.20 |  |  |  | 7.0 |  |  | $ | 87,842 |
Granted |  |  | 140,569 |  |  |  | 51.16 |  |  |  | 9.5 |  |  |  |
Exercised |  |  | (1,448,061 | ) |  |  | 6.53 |  |  |  | — |  |  |  |
Forfeited |  |  | (42,878 | ) |  |  | 15.69 |  |  |  | — |  |  |  |
Expired |  |  | (2,816 | ) |  |  | 15.62 |  |  |  | — |  |  |  |
Balance at September 30, 2021 |  |  | 2,768,039 |  |  |  | 12.62 |  |  |  | 7.5 |  |  |  | 136,212 |
Exercisable at September 30, 2021 |  |  | 813,278 |  |  |  | 10.00 |  |  |  | 6.0 |  |  |  | 42,105 |
Vested and expected to vest |  |  | 2,768,039 |  |  |  | 12.62 |  |  |  | 7.5 |  |  |  | 136,212 |
Summary of RSU Award Activity | RSU award activity for the nine months ended September 30, 2021 under the 2019 Plan is as follows:
|  | Class A Common Stock |  |  | Weighted Average Grant Date Fair Value |  |  | Weighted Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value (000's) |
Unvested at January 1, 2021 |  |  | 20,140 |  |  | $ | 15.89 |  |  |  | 1.2 |  |  | $ | 628 |
Granted (1) |  |  | 28,224 |  |  |  | 48.16 |  |  |  | 0.5 |  |  |  |
Released |  |  | (12,742 | ) |  |  | 15.70 |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |
Unvested at September 30, 2021 |  |  | 35,622 |  |  |  | 41.53 |  |  |  | 0.7 |  |  |  | 2,200 |
(1) Includes an adjustment of 11,763 shares underlying performance-based RSU awards made during the nine months ended September 30, 2021. The vesting of such RSUs is based upon the Company’s current performance against predefined financial targets.

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + 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 (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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