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CAPITAL STOCK (Tables) | 12 Months Ended
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Dec. 31, 2016
CAPITAL STOCK |
Schedule of number of shares of common stock and treasury stock and the share activity |
|  | Common Shares |  | Treasury Shares |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Balance at the beginning of the year |  | 66,685,378 |  | 86,267,467 |  | 4,168,489 |  | 24,336,367 |
Employee option exercises |  | 1,001,748 |  | 1,248,629 |  | (302,626) |  | (167,878) |
Director option exercises |  | 22,167 |  | 65,167 |  | — |  | — |
Restricted stock vestings |  | 30,228 |  | 13,331 |  | — |  | — |
Common stock repurchases |  | — |  | — |  | — |  | 718,866 |
Common stock repurchased and retired |  | (1,726,678) |  | (190,350) |  | — |  | — |
Stock retirements |  | — |  | (20,718,866) |  | — |  | (20,718,866) |
Balance at the end of the year |  | 66,012,843 |  | 66,685,378 |  | 3,865,863 |  | 4,168,489 |

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