|
Stockholders' Equity and Share-Based Compensation (Details 1)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 29, 2013
|
Jun. 30, 2012
|
Jun. 29, 2013
|
Jun. 30, 2012
|
|
| Summary of assumptions used for fair value of option grant | ||||
| Expected life | 5 years 8 months 23 days | 5 years 8 months 23 days | 5 years 8 months 23 days | 5 years 8 months 23 days |
| Risk-free interest rate | 1.70% | 1.00% | ||
| Expected volatility | 73.00% | 74.00% | ||
| Expected dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
|
Minimum [Member]
|
||||
| Summary of assumptions used for fair value of option grant | ||||
| Risk-free interest rate | 1.00% | 1.00% | ||
| Expected volatility | 72.00% | 73.00% | ||
|
Maximum [Member]
|
||||
| Summary of assumptions used for fair value of option grant | ||||
| Risk-free interest rate | 1.70% | 1.20% | ||
| Expected volatility | 73.00% | 74.00% | ||
| X | ||||||||||
|
- Details
|
| 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
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 | ||||||||||
|
- 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
|
| 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
|