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Stock-Based Compensation - Roll Forward of Non-Vested Stock Options Activity (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Number of Shares |  |  |
Outstanding, beginning balance (in shares) | 2,163,809 |  |
Granted (in shares) | 1,232,056 | 845,120 | 969,720
Vested (in shares) | (1,421,042) |  |
Forfeited (in shares) | (681,984) |  |
Outstanding, ending balance (in shares) | 1,292,839 | 2,163,809 |
Weighted Average Grant Date Fair Value |  |  |
Outstanding, beginning balance (in dollars per share) | $ 6.07 |  |
Granted (in dollars per share) | 18.87 |  |
Vested (in dollars per share) | 8.17 |  |
Forfeited (in dollars per share) | 9.58 |  |
Outstanding, ending balance (in dollars per share) | $ 13.93 | $ 6.07 |

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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Number of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
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- Definition Number of options vested. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
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