| Share-based Compensation [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Share-based Compensation [Abstract] | |
Schedule of Other Share-based Compensation, Activity [Table Text Block] | Compensation expense for the periods presented was comprised of the following: | | | | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | | | | | | | | Restricted stock awards with time-based service conditions | | $ | — |
| | $ | 10,575 |
| | $ | 17,631 |
| Restricted stock unit awards with time-based service conditions | | 4,391 |
| | 473 |
| | 484 |
| Restricted stock awards with performance-based vesting conditions | | 197 |
| | — |
| | — |
| Stock options with time-based service vesting conditions | | 1,316 |
| | — |
| | — |
| Stock options with market-based vesting conditions | | 3,158 |
| | — |
| | — |
| Stock options with performance-based vesting conditions | | — |
| | — |
| | — |
| Total compensation expense | | $ | 9,062 |
| | $ | 11,048 |
| | $ | 18,115 |
|
|
Share-based Compensation Arrangement by Share-based Payment Award, Grants in Period [Text Block] | The following table summarizes stock-based award grant activity for the Plans for the years ended December 31, 2016 and 2015: | | | | | | | | | | | | | | | | | | 2016 | | 2015 | | | Shares | | Aggregate fair value (in thousands) | | Shares | | Aggregate fair value (in thousands) | | | | | | | | | | Restricted stock awards with time-based service conditions | | — |
| | $ | — |
| | 894,000 |
| | $ | 11,470 |
| Restricted stock unit awards with time-based service conditions | | — |
| | — |
| | 28,000 |
| | 468 |
| Restricted stock awards with performance-based vesting conditions | | 138,000 |
| | 431 |
| | — |
| | — |
| Stock options with time-based service vesting conditions | | 3,434,000 |
| | 5,704 |
| | — |
| | — |
| Stock options with market-based vesting conditions | | 2,250,000 |
| | 5,530 |
| | — |
| | — |
| Stock options with performance-based vesting conditions | | 200,000 |
| | 487 |
| | — |
| | — |
| Total incentive awards granted | | 6,022,000 |
| | $ | 12,152 |
| | 922,000 |
| | $ | 11,938 |
|
|
Stock Options Activity | The following table summarizes stock option activity for the Plans for the year ended December 31, 2016: | | | | | | | | | | | | | | | | | | | Weighted-Average | | | | | Options | | Exercise Price | | Remaining Contractual Term | | Aggregate Intrinsic Value | | | | | | | | | | Outstanding at December 31, 2015 | | 15,000 |
| | $ | 13.38 |
| | | | | Granted | | 5,884,000 |
| | $ | 4.82 |
| | | | | Exercised | | (101,000 | ) | | $ | 3.22 |
| | | | | Expired/forfeited | | (202,000 | ) | | $ | 3.12 |
| | | | | Outstanding at December 31, 2016 | | 5,596,000 |
| | $ | 4.93 |
| | 6.7 years | | $ | 8,865,000 |
| Vested | | 1,113,000 |
| | $ | 5.03 |
| | 6.5 years | | $ | 1,743,000 |
| Exercisable at December 31, 2016 | | 1,113,000 |
| | $ | 5.03 |
| | 6.5 years | | $ | 1,743,000 |
|
|
Nonvested Restricted Stock Activity | The following table summarizes nonvested restricted share activity for the year ended December 31, 2016: | | | | | | | | | | | Nonvested Restricted Shares | | Weighted Average Grant Date Fair Value | | | | | | Nonvested restricted stock at December 31, 2015 | | 829,000 |
| | $ | 14.41 |
| Granted | | 138,000 |
| | $ | 3.12 |
| Vested | | (342,000 | ) | | $ | 15.33 |
| Canceled | | (292,000 | ) | | $ | 14.28 |
| Nonvested restricted stock at December 31, 2016 | | 333,000 |
| | $ | 8.90 |
|
|
Restricted Stock Units Activity | The following table summarizes restricted stock unit activity for the year ended December 31, 2016: | | | | | | | | | | | Restricted Stock Units | | Weighted Average Grant Date Fair Value | | | | | | Nonvested restricted stock units outstanding at December 31, 2015 | | 35,000 |
| | $ | 15.78 |
| Vested | | (21,000 | ) | | $ | 15.43 |
| Nonvested restricted stock units outstanding at December 31, 2016 | | 14,000 |
| | $ | 16.27 |
| Vested restricted stock units outstanding at December 31, 2016 | | 80,000 |
| | $ | 20.99 |
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