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Earnings (Loss) Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings (Loss) Per Share | Earnings (Loss) Per ShareBasic earnings (loss) per common share is calculated by dividing net income (loss) by the weighted average number of common shares outstanding for the period. Diluted earnings (loss) per common share is calculated by dividing net income (loss) by the weighted average number of common shares outstanding combined with dilutive common share equivalents outstanding, if the effect is dilutive. Potentially dilutive common share equivalents consist of incremental shares of common stock issuable upon exercise of stock options and settlement of restricted stock units. Potentially dilutive securities were excluded from the calculation of diluted loss per share for the years ended December 31, 2020 and 2019, since including them would have an anti-dilutive effect on loss per share due to the loss from continuing operations incurred during the period. Securities convertible into shares of common stock that were not considered in the diluted loss per share calculations were 1.8 million restricted stock units and 3.8 million stock options for the year ended December 31, 2020 and 0.1 million restricted stock units for the year ended December 31, 2019.

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