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Earnings Per Share | 12 Months Ended
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Dec. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | 18. Earnings Per Share We present two calculations of earnings per common share. “Basic” earnings per common share equals net earnings attributable to SMP divided by weighted average common shares outstanding during the period. “Diluted” earnings per common share equals net earnings attributable to SMP divided by the sum of weighted average common shares outstanding during the period plus potentially dilutive common shares. Potentially dilutive common shares that are anti-dilutive are excluded from net earnings per common share. The following are reconciliations of the net earnings attributable to SMP and the shares used in calculating basic and dilutive net earnings per common share attributable to SMP (in thousands, except per share data):
|  | Year Ended December 31, |
|  | 2021 |  |  | 2020 |  |  | 2019 |
Net Earnings Attributable to SMP - |  |  |  |  |  |  |  |  |
Earnings from continuing operations |  | $ | 99,353 |  |  | $ | 80,417 |  |  | $ | 69,051 |
Loss from discontinued operations |  |  | (8,467 | ) |  |  | (23,024 | ) |  |  | (11,134 | )
Net earnings attributable to SMP |  | $ | 90,886 |  |  | $ | 57,393 |  |  | $ | 57,917 |
Basic Net Earnings Per Common Share Attributable to SMP - |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations per common share |  | $ | 4.49 |  |  | $ | 3.59 |  |  | $ | 3.09 |
Loss from discontinued operations per common share |  |  | (0.39 | ) |  |  | (1.02 | ) |  |  | (0.50 | )
Net earnings per common share attributable to SMP |  | $ | 4.10 |  |  | $ | 2.57 |  |  | $ | 2.59 |
Weighted average common shares outstanding |  |  | 22,147 |  |  |  | 22,374 |  |  |  | 22,378 |
Diluted Net Earnings Per Common Share Attributable to SMP - |  |  |  |  |  |  |  |  |  |  |  |
Earnings from continuing operations per common share |  | $ | 4.39 |  |  | $ | 3.52 |  |  | $ | 3.03 |
Loss from discontinued operations per common share |  |  | (0.37 | ) |  |  | (1.01 | ) |  |  | (0.49 | )
Net earnings per common share attributable to SMP |  | $ | 4.02 |  |  | $ | 2.51 |  |  | $ | 2.54 |
Weighted average common shares outstanding |  |  | 22,147 |  |  |  | 22,374 |  |  |  | 22,378 |
Plus incremental shares from assumed conversions: |  |  |  |  |  |  |  |  |  |  |  |
Dilutive effect of restricted stock and performance-based stock |  |  | 469 |  |  |  | 452 |  |  |  | 440 |
Weighted average common shares outstanding – Diluted |  |  | 22,616 |  |  |  | 22,826 |  |  |  | 22,818 |
The shares listed below were not included in the computation of diluted net earnings per common share attributable to SMP because to do so would have been anti-dilutive for the periods presented or because they were excluded under the treasury method (in thousands):
|  | 2021 |  |  | 2020 |  |  | 2019 |
Restricted and performance shares |  |  | 269 |  |  |  | 268 |  |  |  | 255 |

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