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Shareholders' Equity (Details) (USD $)
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9 Months Ended | 1 Months Ended | 0 Months Ended | 9 Months Ended | |||||||
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Sep. 29, 2012
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Sep. 29, 2012
2011 Plan
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Aug. 02, 2012
Stock options
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May 31, 2012
Stock options
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Sep. 29, 2012
Stock options
2011 Plan
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May 10, 2012
Stock options
2011 Plan
Employees
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Aug. 02, 2012
Stock options
2011 Plan
Non-employee directors
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May 10, 2012
Stock options
2011 Plan
Non-employee directors
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Sep. 29, 2012
Stock options
2011 Plan
Non-employee directors
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Sep. 29, 2012
Stock options
2006 Plan
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Sep. 29, 2012
Stock options
1997 Plan
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| Shareholders' Equity | |||||||||||
| Maximum number of shares of common stock which can be issued | 700,000 | ||||||||||
| Vesting period | 2 years | 6 months | 6 months | ||||||||
| Options outstanding (in shares) | 52,000 | 481,000 | 8,000 | ||||||||
| Granted (in shares) | 7.000 | 30,000 | |||||||||
| Exercise price (in dollars per share) | $ 4.01 | $ 4.05 | |||||||||
| Weighted average grant date fair value (in dollars per share) | $ 3.52 | $ 3.57 | |||||||||
| Assumptions used to estimate the fair value of stock options granted | |||||||||||
| Expected dividend yield (as a percent) | 0.00% | 0.00% | 0.00% | ||||||||
| Expected stock price volatility (as a percent) | 95.40% | 95.50% | |||||||||
| Risk-free interest rate (as a percent) | 1.50% | 1.87% | |||||||||
| Expected life of options | 10 years | 10 years | |||||||||
| X | ||||||||||
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- Definition
Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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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- 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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| X | ||||||||||
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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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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Gross number of share options (or share units) granted during the period. No definition available.
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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
The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded. No definition available.
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