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The Company and Significant Accounting Policies (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Stock-based compensation expense related to stock options is based on the fair value
Fair value of options granted	$ 1.49
Expected volatility	90.00%
Risk-free interest rate	1.40%
Expected lives	7 years
Dividend rate

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.

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