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STOCK-BASED COMPENSATION - Stock Options (Details 1) (Stock Options, USD $)	9 Months Ended
	Sep. 30, 2012
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at December 31, 2011	564,735
Granted
Exercised	(306,375)
Forfeited	(9,827)
Expired
Outstanding and exercisable at September 30, 2012	248,533
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding at December 31, 2011	$ 4.08
Granted
Exercised	$ 2.67
Forfeited	$ 2.67
Expired
Outstanding and exercisable at September 30, 2012	$ 5.87
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Remaining Contractual Term [Roll Forward]
Outstanding at December 31, 2011	0.6 years
Outstanding and exercisable at September 30, 2012	0.5 years
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value [Roll Forward]
Outstanding and exercisable at September 30, 2012	$ 22,370

X

- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible.

+ References

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Weighted average remaining contractual term for option awards outstanding.

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- Definition

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

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(4)

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-Publisher FASB

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-Number 123R

-Paragraph A240

-Subparagraph b(1)(g)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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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.

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

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

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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- Definition

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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