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Net Income (Loss) Per Basic and Diluted Share (Tables) | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table provides a reconciliation of the numerators and denominators of the basic and diluted per share computations for net income (loss) attributable to common stockholders:
(in millions, except per share amounts) |  |  |  |  |  |
Year Ended December 31, |  | 2022 |  | 2021 |  | 2020
Numerator: |  |  |  |  |  |
Net income (loss) attributable to common stockholders – basic and diluted |  | $ | (10.2) |  |  | $ | (42.5) |  |  | $ | 5.3 |
Denominator: |  |  |  |  |  |
Weighted-average shares of common stock – basic |  | 70.6 |  |  | 51.9 |  |  | 44.3 |
Effect of dilutive stock options and restricted stock units |  | — |  |  | — |  |  | 4.3 |
Effect of potentially dilutive Series A redeemable convertible preferred stock |  | — |  |  | — |  |  | 7.7 |
Weighted-average shares of common stock – diluted |  | 70.6 |  |  | 51.9 |  |  | 56.3 |
Net income (loss) per share attributable to common stockholders: |  |  |  |  |  |
Basic |  | $ | (0.14) |  |  | $ | (0.82) |  |  | $ | 0.12 |
Diluted |  | $ | (0.14) |  |  | $ | (0.82) |  |  | $ | 0.09 |
Schedule of Antidilutive Securities Excluded from Computation of Diluted Earnings (Loss) Per Share | The following common stock equivalents were excluded from the computation of diluted net income (loss) per share for the periods presented because including them would have been antidilutive:
(in millions) |  |  |  |  |
Year Ended December 31, |  | 2022 |  | 2021 | 2020
Shares subject to outstanding stock options and restricted stock units |  | 9.6 |  |  | 5.0 |  |  | 2.0 |
Employee stock purchase plan |  | 1.4 |  |  | 0.6 |  |  | — |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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