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6. STOCK-BASED COMPENSATION (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Summary of weighted-average assumptions used for grants issued
Weighted-average risk-free rate	0.57%	0.82%
Weighted-average volatility	8.059%	95.97%
Dividend yield	0.00%	0.00%
Expected life	4 years 6 months 26 days	6 years 11 months 24 days

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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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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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.

+ References

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-Name Accounting Standards Codification

-Topic 718

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section D

-Subsection 2

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term.

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-Publisher FASB

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