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Long-term Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Long-Term Incentive Plans [Abstract] |
Restricted Shares Outstanding |
|  |  | Restricted Share Activity
|  |  | 2016 |  | 2015 |  | 2014
|  |  | Number of Shares |  | Weighted Average Price Per Share |  | Number of Shares |  | Weighted Average Price Per Share |  | Number of Shares |  | Weighted Average Price Per Share
| Outstanding at beginning of year |  | 4,727,319 |  | $ | 9.9302 |  | 6,358,826 |  | $ | 10.0047 |  | 3,832,115 |  | $ | 7.6438
| Granted |  | 756,381 |  |  | 8.2722 |  | 481,636 |  |  | 8.8012 |  | 3,263,472 |  |  | 12.0284
| Vested |  | (917,039) |  |  | 13.6196 |  | (2,112,343) |  |  | 9.8988 |  | (613,641) |  |  | 5.9661
| Forfeited |  | (650,000) |  |  | 6.2601 |  | (800) |  |  | 5.0500 |  | (123,120) |  |  | 10.2942
| Outstanding at end of year |  | 3,916,661 |  | $ | 9.3553 |  | 4,727,319 |  | $ | 9.9302 |  | 6,358,826 |  | $ | 10.0047
Stock Options Outstanding |
|  |  | 2016 |  | 2015 |  | 2014
|  |  |  |  | Weighted |  |  |  | Weighted |  |  |  | Weighted
|  |  |  |  | Average |  |  |  | Average |  |  |  | Average
|  |  | Number of |  | Price |  | Number of |  | Price |  | Number of |  | Price
Options |  | Shares |  | Per Share |  | Shares |  | Per Share |  | Shares |  | Per Share
Outstanding at beginning of year |  | 2,325,300 |  | $ | 6.3703 |  | 2,548,000 |  | $ | 10.9888 |  | 3,715,406 |  | $ | 20.6883
Exercised |  | (2,050,000) |  |  | 4.4722 |  | - |  |  | - |  | (400,000) |  |  | 4.0200
Expired or forfeited |  | (37,500) |  |  | 57.5100 |  | (222,700) |  |  | 59.2118 |  | (767,406) |  |  | 61.5815
Outstanding at end of year |  | 237,800 |  | $ | 14.6689 |  | 2,325,300 |  | $ | 6.3703 |  | 2,548,000 |  | $ | 10.9888
Exercisable at end of year |  | 237,800 |  | $ | 14.6689 |  | 2,325,300 |  | $ | 6.3703 |  | 1,798,000 |  | $ | 13.4660
Outstanding Stock Options |
|  | Stock Options Outstanding |  | Stock Options Exercisable
|  |  |  | Weighted |  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |  |
|  |  |  | Average |  |  | Weighted |  | Aggregate |  |  |  | Average |  |  | Weighted |  | Aggregate
|  |  |  | Remaining |  |  | Average |  | Intrinsic |  |  |  | Remaining |  |  | Average |  | Intrinsic
Range of Average |  | Number of |  | Contractual |  |  | Exercise |  | Value |  | Number of |  | Contractual |  |  | Exercise |  | Value
Exercise Price |  | Options |  | Life in Years |  |  | Price |  | (in millions) |  | Options |  | Life in Years |  |  | Price |  | (in millions)
$5.05 - $70.86 |  | 237,800 |  | 0.20 |  | $ | 14.6689 |  | $ | 1 |  | 237,800 |  | 0.20 |  | $ | 14.6689 |  | $ | 1

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