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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2016
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:
| 2016 |  | 2015 |  | 2014
Weighted average fair value of stock options granted | $ | 1.06 |  |  | $ | 2.65 |  |  | $ | 3.79 |
Volatility | 61.75 | % |  | 55.71 | % |  | 50.93 | %
Expected life in years | 3.99 |  |  | 4.75 |  |  | 3.92 |
Risk-free interest rate | 1.50 | % |  | 1.51 | % |  | 1.25 | %
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, 2016, 2015, and 2014:
| Stock Options |  | SARs
| Shares |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Exercise Price
Outstanding at December 31, 2013 | 415,570 |  |  | $ | 27.36 |  |  | 50,209 |  |  | $ | 14.15 |
Granted | 415,172 |  |  | 9.45 |  |  | — |  |  | — |
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 |  |  | — |  |  | — |
Canceled/forfeited | (238,365 | ) |  | 12.69 |  |  | — |  |  | — |
Outstanding at December 31, 2015 | 670,009 |  |  | 12.58 |  |  | 46,572 |  |  | 14.06 |
Granted | 183,251 |  |  | 2.19 |  |  | — |  |  | — |
Exercised | (170,897 | ) |  | 7.81 |  |  | — |  |  | — |
Canceled/forfeited | (25,752 | ) |  | 16.76 |  |  | (4,420 | ) |  | 13.31 |
Outstanding at December 31, 2016 | 656,611 |  |  | $ | 10.76 |  |  | 42,152 |  |  | $ | 14.14 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range |
Range of Exercise Price | Number Outstanding |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value (in thousands)
$ 0.00-$10.00 | 455,578 |  |  | $ | 5.32 |  |  | 8.19 |  |
$10.00-$20.00 | 52,616 |  |  | 13.33 |  |  | 6.64 |  |
$20.00-$30.00 | 141,947 |  |  | 25.73 |  |  | 5.26 |  |
$30.00-$40.00 | 3,134 |  |  | 39.90 |  |  | 0.22 |  |
$40.00-$50.00 | 3,336 |  |  | 48.50 |  |  | 1.03 |  |
Outstanding | 656,611 |  |  | $ | 10.76 |  |  | 7.36 |  | $ | 1,753 |
Vested and expected to vest | 618,870 |  |  | $ | 11.20 |  |  | 7.27 |  | $ | 1,555 |
Exercisable | 292,524 |  |  | $ | 18.31 |  |  | 5.97 |  | $ | 118 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity | The following table summarizes restricted stock activity for the years ended December 31, 2016, 2015, and 2014:
| Restricted Stock
| Number of Shares |  | Weighted Average Grant Date Fair Value
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 |
Granted | 1,768,746 |  |  | 3.72 |
Vested | (681,829 | ) |  | 8.51 |
Cancelled/Forfeited | (160,414 | ) |  | 7.16 |
Outstanding at December 31, 2016 | 2,433,915 |  |  | $ | 4.48 |
Share-based Compensation, Performance Shares Award Outstanding Activity | The following table summarizes performance shares activity for the years ended December 31, 2016, 2015, and 2014:
| Performance Shares
| Number of Shares |  | Weighted Average Grant Date Fair Value
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 |
Cancelled/Forfeited | (190,988 | ) |  | 15.62 |
Outstanding at December 31, 2015 | 1,135,135 |  |  | 10.35 |
Granted | 1,437,077 |  |  | 1.79 |
Cancelled/Forfeited | (199,580 | ) |  | 17.98 |
Outstanding at December 31, 2016 | 2,372,632 |  |  | $ | 4.53 |

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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