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FAIR VALUE OF EACH OPTION GRANT (Details)	3 Months Ended
FAIR VALUE OF EACH OPTION GRANT (Details)	Mar. 31, 2013	Mar. 31, 2012
Fair Value Of Each Option Grant Details
Risk-free interest rate	54.00%	56.00%
Expected lives, in years	3.4	3.0
Expected volatility	52.00%	60.00%
Expected dividend yield	0.00%	343.00%

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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