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Note 13 - Capital Stock (Tables) | 6 Months Ended
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Jun. 30, 2020
Equity [Abstract] |
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity | Information with regard to RSUs to be settled in stock for periods indicated is as follows:
| Performance-Based |  |  |  | Time-Vested |  |
| Number of Shares |  | Weighted-Average Grant Date Fair Value |  | Number of Shares |  | Weighted-Average Grant Date Fair Value
Unvested, December 31, 2019 (1) | 2,448,347 |  |  | $ | 17.03 |  |  | 697,576 |  |  | $ | 19.72 |
Granted (2) | 1,175,062 |  |  | $ | 12.02 |  |  | 659,914 |  |  | $ | 13.69 |
Performance adjustment (3) | (792,420) |  |  | $ | — |  |  | — |  |  | $ | — |
Vested (4) | (591,118) |  |  | $ | 17.59 |  |  | (395,093) |  |  | $ | 17.45 |
Forfeited | (15,463) |  |  | $ | 20.00 |  |  | (4,484) |  |  | $ | 22.87 |
Unvested, June 30, 2020 (1) | 2,224,408 |  |  | $ | 14.44 |  |  | 957,913 |  |  | $ | 16.48 |
______________________ (1)The final number of RSUs distributed depends on the level of performance achieved along with each employee’s continued service through the vest date, which could result in changes in vested RSUs. (2)For performance-based RSUs, amount represents the probable outcome at grant date. (3)Represents an adjustment to the number of unvested performance-based RSUs due to changes during the period in our estimated payouts, which can range from 0 to 200% of target depending on results over the applicable performance periods. (4)Represents amounts vested during the year, which can include both original shares granted and the impact of performance adjustments.

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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