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Earnings Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] |
Earnings Per Share | Earnings Per Share Basic earnings per share (EPS) is calculated using the weighted average number of common shares outstanding during the period and includes the effect of any participating securities as appropriate. Participating securities consist of unvested restricted stock issued to our employees and non-employee directors that provide dividend rights. Diluted EPS is calculated assuming the issuance of common shares for all potentially dilutive securities, provided the effect is not antidilutive. For all periods presented, our convertible senior notes did not have a dilutive effect and, therefore, were excluded from the calculation of diluted EPS. Shares of common stock for the following securities were excluded from the calculation of diluted EPS as the effect was antidilutive.
|  | Years Ended December 31,
|  | 2020 |  | 2019 |  | 2018
|  | (thousands)
Common stock equivalent of our preferred stock outstanding(a) |  | 290 |  |  | 290 |  |  | 298 |
Common stock equivalent of our convertible senior notes outstanding(a) |  | 621 |  |  | 621 |  |  | 729 |
Common stock equivalent of our preferred stock outstanding prior to exchange(a) |  | — |  |  | 5 |  |  | — |
Participating securities(a) |  | — |  |  | 2 |  |  | 6 |
____________________________________________ (a)Amount has been retroactively adjusted to reflect the 1-for-200 (1:200) reverse stock split effective April 14, 2020. See Note 11 for additional information. As a result of the Company’s reverse stock split effective on April 14, 2020, proportionate adjustments were made to the conversion price of Chesapeake’s outstanding 5.5% Convertible Senior Notes due 2026, 4.5% Cumulative Convertible Preferred Stock, 5.00% Cumulative Convertible Preferred Stock (Series 2005B), 5.75% Cumulative Convertible Non-Voting Preferred Stock (Series A) and 5.75% Cumulative Non-Voting Convertible Preferred Stock and to the outstanding awards and number of shares issued and issuable under the Company's equity compensation plans. See Note 11 for additional information.

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