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STOCKHOLDERS' EQUITY - Fair value of options on the date of grant (Details)
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12 Months Ended | |
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Dec. 31, 2012
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Dec. 31, 2011
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| Equity [Abstract] | ||
| Risk-free interest rates, minimum | 0.71% | 2.05% |
| Risk-free interest rates, maximum | 1.75% | 2.18% |
| Expected option life in years, minimum | 5 years | 5 years |
| Expected option life in years, maximum | 10 years | 5 years |
| Expected stock price volatility, minimum | 43.54% | 42.04% |
| Expected stock price volatility, maximum | 45.86% | 42.04% |
| Expected dividend yield | 0.00% | 0.00% |
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- Definition
No authoritative reference available. No definition available.
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- Definition
No authoritative reference available. No definition available.
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- Definition
No authoritative reference available. No definition available.
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- Details
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- Definition
Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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