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CAPITAL STOCK (Tables) | 12 Months Ended
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Dec. 31, 2022
CAPITAL STOCK |
Schedule of number of shares of common stock and treasury stock and the share activity | The number of shares of common stock and treasury stock and the share activity were as follows:
| Common Shares |  | Treasury Shares
| 2022 |  | 2021 |  | 2020 |  | 2022 |  | 2021 |  | 2020
Balance at the beginning of the year | 70,370,812 |  |  | 69,516,805 |  |  | 68,608,508 |  |  | 4,852,709 |  |  | 4,528,051 |  |  | 4,836,027 |
Employee option exercises | 301,463 |  |  | 634,572 |  |  | 802,046 |  |  | (157,682) |  |  | (290,316) |  |  | (307,976) |
Director option exercises | — |  |  | 47,500 |  |  | 26,551 |  |  | — |  |  | — |  |  | — |
Restricted stock vestings | 176,535 |  |  | 171,935 |  |  | 79,700 |  |  | — |  |  | — |  |  | — |
Common stock repurchases | — |  |  | — |  |  | — |  |  | 860,000 |  |  | 614,974 |  |  | — |
Balance at the end of the year | 70,848,810 |  |  | 70,370,812 |  |  | 69,516,805 |  |  | 5,555,027 |  |  | 4,852,709 |  |  | 4,528,051 |

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