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Shareholders' Equity and Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
Equity [Abstract] |
Summary of stock units and stock options outstanding under the comprehensive Plan | As further described in the paragraphs below, CSUs, stock options and RSUs under the Comprehensive Plan were as follows:
|  | December 31,
|  | 2021 |  | 2020 |  | 2019
CSUs related to deferred compensation for Directors |  | 26,313 |  |  | 23,609 |  |  | 28,526 |
CSUs related to deferred compensation for employees |  | 16,571 |  |  | 20,467 |  |  | 25,194 |
Stock options |  | 1,032,128 |  |  | 916,287 |  |  | 908,557 |
RSUs related to incentive compensation |  | 834,981 |  |  | 823,393 |  |  | 889,438 |
Total |  | 1,909,993 |  |  | 1,783,756 |  |  | 1,851,715 |
Summary of changes in outstanding options | Changes in outstanding options were as follows:
|  | Weighted Average Option Price per Share |  | Range of Option Prices per Share |  | Options
|  |  |  | Outstanding |  | Vested and Exercisable
December 31, 2020 |  | $38.99 |  | $28.88-$42.95 |  | 916,287 |  |  | 437,197 |
Granted |  | $40.10 |  | $40.10-$40.10 |  | 183,272 |  |  | — |
Vested |  | $41.27 |  | $28.88-$42.95 |  | — |  |  | 163,519 |
Exercised |  | $31.35 |  | $31.01-$32.35 |  | (8,015) |  |  | (8,015) |
Forfeited |  | $41.39 |  | $41.10-$42.73 |  | (49,411) |  |  | — |
Expired |  | $42.23 |  | $41.83-$42.73 |  | (10,005) |  |  | — |
December 31, 2021 |  | $39.10 |  | $28.88-$42.95 |  | 1,032,128 |  |  | 592,701 |
Summary of options outstanding segregated by ranges of exercise prices | Option information segregated by ranges of exercise prices were as follows:
|  | December 31, 2021
|  |  |  | Total Outstanding Options |  | Vested and Exercisable Options
|  | Range of Option Prices per Share |  | Options |  | Weighted Average Option Price per Share |  | Weighted Average Remaining Term |  | Options |  | Weighted Average Option Price per Share |  | Weighted Average Remaining Term
|  | $28.88-$33.41 |  | 195,192 |  |  | $30.81 |  | 3.59 |  | 195,192 |  |  | $30.81 |  | 3.59
|  | $36.04-$41.95 |  | 687,556 |  |  | $40.61 |  | 7.52 |  | 285,474 |  |  | $40.84 |  | 6.35
|  | $42.73-$42.73 |  | 149,380 |  |  | $42.95 |  | 6.18 |  | 112,035 |  |  | $42.95 |  | 6.18
Total |  |  |  | 1,032,128 |  |  | $39.10 |  | 6.58 |  | 592,701 |  |  | $37.94 |  | 5.41
Summary of changes in outstanding restricted common stock units | Changes in outstanding RSUs were as follows:
|  | Total Outstanding Units |  | Vested Units
|  | Units |  | Weighted Average Grant Date Fair Value per Unit |  | Units |  | Weighted Average Grant Date Fair Value per Unit
December 31, 2020 |  | 823,393 |  |  | $33.88 |  | 484,984 |  |  | $27.48
Granted(1) |  | 205,474 |  |  | $41.29 |  | — |  |  | —
Adjustment for performance achievement |  | 14,272 |  |  | $45.01 |  | — |  |  | —
Vested |  | — |  |  | — |  | 145,319 |  |  | $42.15
Forfeited |  | (47,214) |  |  | $43.08 |  | — |  |  | —
Distributed(2) |  | (160,944) |  |  | $38.43 |  | (160,944) |  |  | —
December 31, 2021 |  | 834,981 |  |  | $34.50 |  | 469,359 |  |  | $28.27
(1) Includes dividends reinvested into additional RSUs. (2) Includes distributed units which were utilized to satisfy withholding taxes due on the distribution.

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