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Stockholders' Equity , Performance Stock Units (Details) (Performance Shares [Member], USD $)
In Millions, except Share data, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2013
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| Performance Share, Weighted Average Assumptions [Abstract] | |
| Expected term in years | 2 years 11 months 19 days |
| Volatility (%) | 50.11% |
| Risk-free interest rate (%) | 0.67% |
| Dividend rate (%) | 0.00% |
| Granted | 180,000 |
| Granted, weighted-average grant-date fair value per share (in dollars per share) | $ 22.06 |
| Forfeited | 50,000 |
| Compensation cost not yet recognized | $ 2.4 |
| Compensation cost not yet recognized period of recognition | 2 years 7 months 2 days |
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Minimum [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Performance share target range, percent | 0.00% |
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Maximum [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Performance share target range, percent | 150.00% |
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- Details
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- Definition
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Settlement Range No definition available.
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- Definition
Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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