6. STOCK-BASED COMPENSATION (Details-Outstanding options and warrants) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
Jun. 30, 2014	Dec. 31, 2013
Non-Plan Outstanding Warrants [Member]
Weighted Average Exercise price Per Common Share
Begining Balance	$ 2.62
Granted
Exercised
Canceled or expired
Ending Balance	$ 2.62
Exercisable at the end	$ 2.62
Aggregate Intrinsic Value
Aggregate value outstanding	$ 802,000
Aggregate value exercisable	802,000
Outstanding Warrants
Beginning balance	200,000
Ending balance	200,000
Exercisable	200,000
Weighted Average Exercise Price
Beginning price per share	$ 2.62
Ending price per share	$ 2.62
Weighted Average Remaining Contractual Term
Weighted average contractual term ending balance	1 year 5 months 1 day
Weighted average contractual term exercisable	1 year 5 months 1 day
Outstanding Options and Warrants [Member]
Outstanding Options
Begining Balance	4,701,250
Granted	0
Exercised	(2,129,083)
Canceled or expired	(300,000)
Ending Balance	2,272,167
Exercisable at the end	2,062,167
Weighted Average Exercise price Per Common Share
Begining Balance	$ 3.15
Granted
Exercised	$ 2.40
Canceled or expired	$ 6.10
Ending Balance	$ 3.46
Exercisable at the end	$ 3.54
Weighted Average Remaining Contractual Life
Ending Balance	1 year 7 months 24 days
Exercisable at the end	1 year 6 months 18 days
Aggregate Intrinsic Value
Aggregate value outstanding	7,799,490
Aggregate value exercisable	$ 6,972,755
Weighted Average Exercise Price
Exercisable price per share		$ 2.62

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Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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Number of warrants or rights outstanding.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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