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Share-Based Compensation (Details 3) (USD $)
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12 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2013
Restricted Stock Award
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Dec. 31, 2013
Restricted Stock Award
Employees and Director
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Dec. 31, 2012
Restricted Stock Award
Employees and Director
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Dec. 31, 2011
Restricted Stock Award
Employees and Director
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Dec. 31, 2013
Restricted Stock Award
Maximum
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Dec. 31, 2013
Restricted Stock Award
Maximum
Employees and Director
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Mar. 31, 2014
Restricted Stock Based on Performance Conditions
Executives
Subsequent event
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Dec. 31, 2013
Restricted Stock Based on Performance Conditions
Executives
Subsequent event
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Dec. 31, 2013
Restricted Stock Based on Market Conditions
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| Share-based compensation disclosures | |||||||||||
| Vesting period of shares | 5 years | 4 years | 3 years | 3 years | |||||||
| Unvested restricted stock | |||||||||||
| Outstanding at the beginning of the period (in shares)) | 1,781,000 | ||||||||||
| Granted (in shares) | 4,493,000 | 4,493,443 | 944,015 | 362,311 | 353,933 | ||||||
| Vested (in shares) | (2,262,000) | ||||||||||
| Forfeited (in shares) | (248,000) | ||||||||||
| Outstanding at the end of the period (in shares) | 3,764,000 | 354,000 | |||||||||
| Weighted-Average Grant-Date Fair Value | |||||||||||
| Outstanding at the end of the period (in dollars per share) | $ 23.42 | ||||||||||
| Granted (in dollars per share) | $ 16.43 | $ 10.42 | |||||||||
| Vested (in dollars per share) | $ 18.48 | ||||||||||
| Forfeited (in dollars per share) | $ 20.07 | ||||||||||
| Outstanding at the beginning of the period (in dollars per share) | $ 18.26 | $ 10.42 | |||||||||
| Aggregate value of restricted stock awards at date of grant | $ 73,800,000 | $ 19,500,000 | |||||||||
| Fair value awards vested | 37,500,000 | 9,700,000 | 21,400,000 | 3,700,000 | |||||||
| Total future compensation cost related to unvested stock that are expected to vest | 48,800,000 | ||||||||||
| Liability related to awards | $ 172,803,000 | $ 158,095,000 | $ 1,800,000 | ||||||||
| Weighted Average Period for Cost recognition | 1 year | ||||||||||
| Assumptions used to value grant date fair value | |||||||||||
| Risk free interest rate (as a percent | 0.41% | ||||||||||
| Expected volatility (as a percent) | 46.00% | ||||||||||
| Closing stock price (in dollars per share) | $ 16.53 | ||||||||||
| Expected term (in years) | 2 years 9 months 25 days | ||||||||||