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SHAREHOLDERS' EQUITY (Tables) | 3 Months Ended
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Mar. 31, 2022
Equity [Abstract] |
COMMON SHARES ISSUED AND OUTSTANDING | The following table presents changes in common shares issued and outstanding:
|  | Three months ended March 31, |  |  |  |
|  | 2022 |  | 2021 |  |  |  |  |  |
| Shares issued, balance at beginning of period | 176,580 |  |  | 176,580 |  |  |  |  |  |  |
| Shares issued | — |  |  | — |  |  |  |  |  |  |
| Total shares issued at end of period | 176,580 |  |  | 176,580 |  |  |  |  |  |  |
| Treasury shares, balance at beginning of period | (91,806) |  |  | (92,227) |  |  |  |  |  |  |
| Shares repurchased | (245) |  |  | (189) |  |  |  |  |  |  |
| Shares reissued | 747 |  |  | 589 |  |  |  |  |  |  |
| Total treasury shares at end of period | (91,304) |  |  | (91,827) |  |  |  |  |  |  |
| Total shares outstanding | 85,276 |  |  | 84,753 |  |  |  |  |  |  |
SHARE REPURCHASES | The following table presents common shares repurchased from shares held in Treasury:
|  | Three months ended March 31, |  |  |  |
|  | 2022 |  | 2021 |  |  |  |  |  |
| In the open market: |  |  |  |  |  |  |  |  |
| Total shares | — |  |  | — |  |  |  |  |  |  |
| Total cost | $ | — |  |  | $ | — |  |  |  |  |  |  |
| Average price per share(1) | $ | — |  |  | $ | — |  |  |  |  |  |  |
| From employees:(2) |  |  |  |  |  |  |  |  |
| Total shares | 245 |  |  | 189 |  |  |  |  |  |  |
| Total cost | $ | 12,977 |  |  | $ | 9,380 |  |  |  |  |  |  |
| Average price per share(1) | $ | 52.93 |  |  | $ | 49.73 |  |  |  |  |  |  |
| Total shares repurchased: |  |  |  |  |  |  |  |  |
| Total shares | 245 |  |  | 189 |  |  |  |  |  |  |
| Total cost | $ | 12,977 |  |  | $ | 9,380 |  |  |  |  |  |  |
| Average price per share(1) | $ | 52.93 |  |  | $ | 49.73 |  |  |  |  |  |  |
(1) Calculated using whole numbers. (2) Shares are repurchased from employees to facilitate the satisfaction of their personal withholding tax liabilities that arise on the vesting of share-settled restricted stock units.
DIVIDENDS | The following table presents dividends declared and paid related to the Company's common and preferred shares:
|  | Per share data |
|  | Dividends declared |  | Dividends paid in period of declaration |  | Dividends paid in period following declaration |
| Three months ended March 31, 2022 |  |  |  |  |  |
| Common shares | $ | 0.43 |  |  | $ | — |  |  | $ | 0.43 |  |
| Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |
| Three months ended March 31, 2021 |  |  |  |  |  |
| Common shares | $ | 0.42 |  |  | $ | — |  |  | $ | 0.42 |  |
| Series E preferred shares | $ | 34.38 |  |  | $ | — |  |  | $ | 34.38 |  |

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