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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following table sets forth the weighted average fair value of stock options and the assumptions used to estimate the fair value of the stock options using the Black-Scholes option valuation model:
| 2015 |  | 2014 |  | 2013
Weighted average fair value of stock options granted | $ | 2.65 |  |  | $ | 3.79 |  |  | $ | 12.60 |
Volatility | 55.71 | % |  | 50.93 | % |  | 76.74 | %
Expected life in years | 4.75 |  |  | 3.9 |  |  | 5.0 |
Risk-free interest rate | 1.51 | % |  | 1.25 | % |  | 0.84 | %
Dividend yield | — |  |  | — |  |  | — |
Schedule of Stock-based Compensation, Stock Options and Stock Appreciation Rights Award Activity | The following table summarizes stock option and SAR activity for the years ended December 31, 2015, 2014, and 2013:
| Stock Options |  | SARs
| Shares |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Exercise Price
Outstanding at December 31, 2012 | 370,000 |  |  | $ | 30.20 |  |  | 68,865 |  |  | $ | 13.83 |
Granted | 190,452 |  |  | 20.41 |  |  | — |  |  | — |
Exercised | (13,027 | ) |  | 10.77 |  |  | (6,617 | ) |  | 13.14 |
Canceled/forfeited | (131,855 | ) |  | 29.30 |  |  | (12,039 | ) |  | 15.40 |
Outstanding at December 31, 2013 | 415,570 |  |  | 27.36 |  |  | 50,209 |  |  | 14.15 |
Granted | 415,172 |  |  | 9.45 |  |  | — |  |  | — |
Exercised | — |  |  | — |  |  | — |  |  | — |
Canceled/forfeited | (232,396 | ) |  | 23.94 |  |  | (3,637 | ) |  | 15.40 |
Outstanding at December 31, 2014 | 598,346 |  |  | 16.26 |  |  | 46,572 |  |  | 14.06 |
Granted | 310,028 |  |  | 5.57 |  |  | — |  |  | — |
Exercised | — |  |  | — |  |  | — |  |  | — |
Canceled/forfeited | (238,365 | ) |  | 12.69 |  |  | — |  |  | — |
Outstanding at December 31, 2015 | 670,009 |  |  | $ | 12.58 |  |  | 46,572 |  |  | $ | 14.06 |
|  | Options Outstanding |  | Options Exercisable
Range of Exercise Price |  | Number Outstanding |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Number Exercisable |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years)
$ 0.00-$10.00 |  | 439,746 |  |  | $ | 7.33 |  |  | 8.71 |  | 75,613 |  |  | $ | 9.41 |  |  | 7.49
$10.00-$20.00 |  | 71,540 |  |  | 13.42 |  |  | 7.56 |  | 40,823 |  |  | 14.56 |  |  | 7.31
$20.00-$30.00 |  | 149,992 |  |  | 25.63 |  |  | 6.31 |  | 126,828 |  |  | 25.98 |  |  | 6.17
$30.00-$40.00 |  | 3,134 |  |  | 39.90 |  |  | 1.22 |  | 3,134 |  |  | 39.90 |  |  | 1.22
$40.00-$50.00 |  | 3,336 |  |  | 48.50 |  |  | 2.03 |  | 3,336 |  |  | 48.50 |  |  | 2.03
$50.00-$60.00 |  | 2,261 |  |  | 51.40 |  |  | 0.14 |  | 2,261 |  |  | 51.40 |  |  | 0.14
|  | 670,009 |  |  | $ | 12.58 |  |  |  |  | 251,995 |  |  | $ | 19.86 |  |  |
At December 31, 2015, there was $0.4 million of unrecognized compensation cost related to non-vested stock options to be recognized over a weighted average period of 1.1 years.
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity | The following table summarizes restricted stock and restricted stock units activity for the years ended December 31, 2015, 2014, and 2013:
| Restricted Stock |  | Restricted Stock Units
| Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Units |  | Weighted Average Fair Value
Outstanding at December 31, 2012 | 239,698 |  |  | $ | 25.38 |  |  | 11,411 |  |  | $ | 24.14 |
Granted | 573,467 |  |  | 15.38 |  |  | — |  |  | — |
Vested | (90,963 | ) |  | 26.83 |  |  | (11,411 | ) |  | 22.74 |
Cancelled/Forfeited | (109,116 | ) |  | 23.30 |  |  | — |  |  | — |
Outstanding at December 31, 2013 | 613,086 |  |  | 16.68 |  |  | — |  |  | — |
Granted | 695,897 |  |  | 9.83 |  |  | — |  |  | — |
Vested | (234,103 | ) |  | 17.16 |  |  | — |  |  | — |
Cancelled/Forfeited | (172,881 | ) |  | 11.87 |  |  | — |  |  | — |
Outstanding at December 31, 2014 | 901,999 |  |  | 12.19 |  |  | — |  |  | — |
Granted | 1,180,384 |  |  | 5.49 |  |  | — |  |  | — |
Vested | (317,122 | ) |  | 13.38 |  |  | — |  |  | — |
Cancelled/Forfeited | (257,849 | ) |  | 7.59 |  |  | — |  |  | — |
Outstanding at December 31, 2015 | 1,507,412 |  |  | $ | 7.49 |  |  | — |  |  | $ | — |
Share-based Compensation, Performance Shares Award Outstanding Activity | The following table summarizes performance shares and performance units’ activity for the years ended December 31, 2015, 2014, and 2013:
| Performance Shares |  | Performance Units
| Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Units |  | Weighted Average Fair Value
Outstanding at December 31, 2012 | 109,159 |  |  | $ | 26.92 |  |  | 34,239 |  |  | $ | 39.78 |
Granted | 173,773 |  |  | 23.35 |  |  | 34,239 |  |  | 38.02 |
Vested | (4,160 | ) |  | 30.97 |  |  | (68,478 | ) |  | 38.02 |
Cancelled/Forfeited | (68,377 | ) |  | 34.49 |  |  | — |  |  | — |
Outstanding at December 31, 2013 | 210,395 |  |  | 28.04 |  |  | — |  |  | — |
Granted | 358,398 |  |  | 12.21 |  |  | — |  |  | — |
Vested | (34,611 | ) |  | 27.18 |  |  | — |  |  | — |
Cancelled/Forfeited | (17,352 | ) |  | 27.15 |  |  | — |  |  | — |
Outstanding at December 31, 2014 | 516,830 |  |  | 17.61 |  |  | — |  |  | — |
Granted | 809,293 |  |  | 6.97 |  |  | — |  |  | — |
Vested | — |  |  | — |  |  | — |  |  | — |
Cancelled/Forfeited | (190,988 | ) |  | 15.62 |  |  | — |  |  | — |
Outstanding at December 31, 2015 | 1,135,135 |  |  | $ | 10.35 |  |  | — |  |  | $ | — |

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