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Long-term Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2015
Long-Term Incentive Plans [Abstract] |
Restricted Shares Outstanding |
|  |  | Restricted Share Activity
|  |  | 2015 |  | 2014 |  | 2013
|  |  | 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 |  | 6,358,826 |  | $ | 10.0047 |  | 3,832,115 |  | $ | 7.6438 |  | 7,320,110 |  | $ | 6.8017
| Granted |  | 481,636 |  |  | 8.8012 |  | 3,263,472 |  |  | 12.0284 |  | 449,931 |  |  | 13.0741
| Vested |  | (2,112,343) |  |  | 9.8988 |  | (613,641) |  |  | 5.9661 |  | (969,396) |  |  | 9.8408
| Forfeited |  | (800) |  |  | 5.0500 |  | (123,120) |  |  | 10.2942 |  | (2,968,530) |  |  | 5.6724
| Outstanding at end of year |  | 4,727,319 |  | $ | 9.9302 |  | 6,358,826 |  | $ | 10.0047 |  | 3,832,115 |  | $ | 7.6438
Stock Options Outstanding |
|  |  | 2015 |  | 2014 |  | 2013
|  |  |  |  | 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 |  | 2,548,000 |  | $ | 10.9888 |  | 3,715,406 |  | $ | 20.6883 |  | 5,963,268 |  | $ | 19.0485
Exercised |  | - |  |  | - |  | (400,000) |  |  | 4.0200 |  | - |  |  | -
Expired or forfeited |  | (222,700) |  |  | 59.2118 |  | (767,406) |  |  | 61.5815 |  | (2,247,862) |  |  | 16.3382
Outstanding at end of year |  | 2,325,300 |  | $ | 6.3703 |  | 2,548,000 |  | $ | 10.9888 |  | 3,715,406 |  | $ | 20.6883
Exercisable at end of year |  | 2,325,300 |  | $ | 6.3703 |  | 1,798,000 |  | $ | 13.4660 |  | 1,752,311 |  | $ | 38.5120
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)
$4.02 - $57.71 |  | 2,287,500 |  | 0.70 |  | $ | 5.3922 |  | $ | 4 |  | 2,287,500 |  | 0.70 |  | $ | 5.3922 |  | $ | 4
$58.84 - $70.86 |  | 37,800 |  | 1.34 |  |  | 65.5624 |  |  | - |  | 37,800 |  | 1.34 |  |  | 65.5624 |  |  | -
Total |  | 2,325,300 |  | 0.71 |  | $ | 6.3703 |  | $ | 4 |  | 2,325,300 |  | 0.71 |  | $ | 6.3703 |  | $ | 4

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