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Share Capital (Tables) | 3 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Changes in Number of Shares of Class A Stock Outstanding | The following table reflects changes in the number of shares of Class A Stock outstanding for the periods indicated:
|  |  | For the Three Months Ended March 31,
|  |  |  |  | 2021 |  | 2020
Class A Stock outstanding, beginning of period |  |  |  |  | 12,381,778 |  |  | 12,698,703 |
Issued pursuant to share-based compensation plans |  |  |  |  | 204,265 |  |  | 321,541 |
Repurchased and canceled pursuant to the stock buy-back |  |  |  |  | — |  |  | (409,504) |
Class A Stock outstanding, end of period |  |  |  |  | 12,586,043 |  |  | 12,610,740 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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