Stock-Based Incentive Compensation Plans (Weighted-average Valuation Assumptions) (Details) - Stock Options |
3 Months Ended | 9 Months Ended | ||
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Sep. 24, 2016 |
Sep. 26, 2015 |
Sep. 24, 2016 |
Sep. 26, 2015 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Expected volatility | 59.85% | 71.71% | 59.85% | 60.19% |
| Risk-free interest rate | 1.00% | 1.32% | 1.00% | 1.24% |
| Expected dividends | 0.00% | 0.00% | 0.00% | 0.00% |
| Expected life | 3 years 11 months 23 days | 3 years 10 months 27 days | 3 years 11 months 23 days | 3 years 10 months 27 days |
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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 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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- Definition Weighted average expected volatility rate of share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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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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- Details
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