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Earnings Per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | Note 12. Earnings Per Share Reconciliation of the shares used in the basic and diluted earnings per share computations for the three months ended March 31, 2021 and 2020 are as follows (in thousands):
|  |  |  | Three Months Ended March 31,
|  |  |  |  |  | 2021 |  | 2020
Basic weighted average shares outstanding |  |  |  |  |  | 48,736 |  |  | 48,485 |
Add effects of share-based compensation instruments (1) |  |  |  |  |  | — |  |  | 284 |
Diluted weighted average shares outstanding |  |  |  |  |  | 48,736 |  |  | 48,769 |
(1)Excluded from the computation of diluted earnings per share were stock options, SARs and restricted share units totaling 4.3 million and 1.5 million for the three months ended March 31, 2021 and 2020, respectively, because to include them would have been anti-dilutive under the treasury stock method.

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