Note 7 - Stock-based Compensation - Valuation Assumptions of Restricted Stock Units (Details) - Binomial Model Weighted Average Assumptions [Member] - Restricted Stock Units (RSUs) [Member] - $ / shares |
12 Months Ended | ||||||
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Dec. 31, 2017 |
[1] | Jan. 01, 2017 |
Jan. 03, 2016 |
[1] | |||
| Binomial Model weighted-average assumptions | |||||||
| Stock Price (in dollars per share) | $ 1.34 | ||||||
| Expected volatility | 42.20% | ||||||
| Expected forfeiture | 29.00% | ||||||
| Risk-free interest rate | 0.60% | ||||||
| RSU term in years (Year) | 3 years | ||||||
| Weighted-average RSU fair value per award granted (in dollars per share) | $ 0.42 | ||||||
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- Definition Binomial Model Weighted Average Assumptions. No definition available.
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- Definition The estimated forfeiture rate of the underlying shares over the option's term. No definition available.
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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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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Price of a single share of a number of saleable stocks of a company. 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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- Details
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