STOCKHOLDERS' EQUITY (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Outstanding-Number of Shares Subject to Issuance	1,244,260	1,972,203
Granted-Number of Shares Subject to Issuance	0	0
Forfeited or expired-Number of Shares Subject to Issuance	(235,862)	(292,820)
Exercised-Number of Shares Subject to Issuance	(261,763)	(435,123)
Outstanding-Number of Shares Subject to Issuance	746,635	1,244,260	1,972,203
Exercisable-Number of Shares Subject to Issuance	711,135
Outstanding-Weighted Average Exercise Price	$ 1.93	$ 1.62
Granted-Weighted Average Exercise Price	$ 0	$ 0
Forfeited or expired-Weighted Average Exercise Price	$ 3.1	$ 1.97
Exercised-Weighted Average Exercise Price	$ 0.5	$ 0.52
Outstanding-Weighted Average Exercise Price	$ 2.06	$ 1.93	$ 1.62
Exercisable-Weighted Average Exercise Price	$ 2.08
Outstanding-Weighted average Remaining Contractual Term	1 year 7 months 28 days	2 years 3 months 14 days	2 years 10 months 10 days
Exercisable-Weighted average Remaining Contractual Term	1 year 7 months 24 days
Exercised-Aggregate Intrinsic Value	$ 348,352	$ 326,172
Outstanding-Aggregate Intrinsic Value	32,217
Exercisable-Aggregate Intrinsic Value	$ 32,217

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

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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

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

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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 can acquire the shares reserved for issuance on stock options awarded.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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

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