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Net Loss Per Share | 12 Months Ended
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Dec. 31, 2022
Earnings Per Share [Abstract] |
Net Loss Per Share | Net Loss Per Share Basic net loss per share and basic income (loss) from continuing operations per share are computed by dividing net loss or income (loss) from continuing operations, as applicable, by the weighted-average number of shares (including Class A common stock, Class B common stock and Class C capital stock) outstanding during the period. In the calculation of basic net loss per share and basic income (loss) from continuing operations per share, undistributed earnings are allocated assuming all earnings during the period were distributed. Diluted net loss per share and diluted net income (loss) from continuing operations per share is computed by dividing net loss or net income (loss) from continuing operations, as applicable, by the weighted-average number of shares (including Class A common stock, Class B common stock and Class C capital stock) outstanding during the period, which is calculated based on net income (loss) from continuing operations, and potentially dilutive Class A common stock and Class C capital stock equivalents, except in cases where the effect of the Class A common stock or Class C capital stock equivalent would be antidilutive. Potential Class A common stock and Class C capital stock equivalents consist of Class A common stock and Class C capital stock issuable upon exercise of stock options and Class A common stock and Class C capital stock underlying unvested restricted stock units using the treasury stock method. Potential Class A common stock equivalents also include Class A common stock issuable upon conversion of the convertible senior notes due in 2020 using the if-converted method through the date of their last conversion in December 2020. Prior to the second half of 2020, we used the treasury stock method to calculate any potential dilutive effect of the conversion spread of our outstanding convertible senior notes on diluted net income per share, if applicable. Effective July 1, 2020, on a prospective basis we have applied the if-converted method for calculating any potential dilutive effect of the conversion of the outstanding convertible notes on diluted net income per share, if applicable. The following table presents the maximum number of shares and conversion price per share of Class C capital stock for each of the Notes based on the aggregate principal amount outstanding as of December 31, 2022 (in thousands, except per share amounts):
Maturity Date |  | Shares |  | Conversion Price per Share
September 1, 2026 |  | 11,464 |  |  | $ | 43.51 |
May 15, 2025 |  | 8,408 |  |  | 67.20 |
September 1, 2024 |  | 13,983 |  |  | 43.51 |
For the periods presented, the following table reconciles the denominators used in the basic and diluted net loss and net income (loss) from continuing operations per share calculations (in thousands):
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Denominator for basic calculation | 242,163 |  |  | 249,937 |  |  | 223,848 |
Effect of dilutive securities: |  |  |  |  |
Option awards | — |  |  | 9,304 |  |  | 5,062 |
Unvested restricted stock units | — |  |  | 2,585 |  |  | 2,187 |
Convertible senior notes maturing 2020 | — |  |  | — |  |  | 338 |
Denominator for dilutive calculation | 242,163 |  |  | 261,826 |  |  | 231,435 |
For the periods presented, the following Class A common stock and Class C capital stock equivalents were excluded from the calculations of diluted net loss per share and diluted net income (loss) from continuing operations per share because their effect would have been antidilutive (in thousands):
| Year Ended December 31,
| 2022 |  | 2021 |  | 2020
Weighted-average Class A common stock and Class C capital stock option awards outstanding | 15,759 |  |  | 2,455 |  |  | 12,338 |
Weighted-average Class A common stock and Class C capital stock restricted stock units outstanding | 9,015 |  |  | 1,173 |  |  | 4,192 |
Class C capital stock issuable upon conversion of the convertible notes maturing in 2021, 2023, 2024, 2025 and 2026 | 33,855 |  |  | 36,540 |  |  | 24,182 |
Total Class A common stock and Class C capital stock equivalents | 58,629 |  |  | 40,168 |  |  | 40,712 |
In the event of liquidation, dissolution, distribution of assets or winding-up of the Company, the holders of all classes of common and capital stock have equal rights to receive all the assets of the Company after the rights of the holders of preferred stock have been satisfied. We have not presented net loss per share under the two-class method for our Class A common stock, Class B common stock and Class C capital stock because it would be the same for each class due to equal dividend and liquidation rights for each class.

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