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STOCKHOLDERS' EQUITY (Schedule of Fair Value Assumptions) (Details)
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1 Months Ended | ||
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Jul. 11, 2011
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Feb. 08, 2011
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Feb. 10, 2010
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| STOCKHOLDERS' EQUITY [Abstract] | |||
| Expected volatility | 59.50% | 59.50% | 73.00% |
| Expected dividends yield | 0.00% | 0.00% | 0.00% |
| Time to maturity | 5 years | 3 years | 5 years |
| Risk-free interest rate per annum | 2.294% | 1.745% | 2.218% |
| Fair value of underlying common shares (per share) | 2.44 | 4.85 | 1.95 |