Common Stock and Stock-Based Incentive Compensation Plans (Details) (Weighted Average Valuation Assumptions for ESPP) - ESPP |
12 Months Ended |
|---|---|
Dec. 30, 2017 | |
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
| Expected volatility | 56.07% |
| Risk-free interest rate | 1.36% |
| Expected dividend payments | 0.00% |
| Expected life | 5 months 27 days |
| Forfeiture rate | 7.80% |
| X | ||||||||||
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate No definition available.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Weighted average expected volatility rate of share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- 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.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Details
|