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Earnings Per Share | 12 Months Ended
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Dec. 31, 2020
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per ShareBasic net income per share of common stock is computed by dividing net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period, excluding the dilutive effects of restricted stock. Diluted net income per share of common stock is computed by dividing the net income attributable to common stockholders by the sum of the weighted-average number of shares of common stock outstanding during the period plus the potential dilutive effects of restricted stock outstanding during the period calculated in accordance with the treasury stock method, although restricted stock is excluded if their effect is anti-dilutive. The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share for the years ended December 31, 2020, 2019, and 2018 was 1,886, 764, and 854, respectively as their effect would be anti-dilutive. The following table reconciles the weighted-average common shares outstanding used in the calculation of basic net income per share to the weighted average common shares outstanding used in the calculation of diluted net income per share:
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Weighted average common shares outstanding | 40,260 |  |  | 40,135 |  |  | 40,427 |
Assumed conversion of restricted stock | — |  |  | 202 |  |  | 22 |
Diluted weighted average common stock outstanding | 40,260 |  |  | 40,337 |  |  | 40,449 |

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