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Summary of the stock option activity and changes during the period (Details)
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Shares
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Weighted Average Exercise Price
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Weighted Average Remaining contractual Term (years)
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Aggregate Intrinsic Value
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|---|---|---|---|---|
| Outstanding at Dec. 31, 2013 | 2,647,500 | 4.01 | 0 | 0 |
| Granted | 5,000 | 16.99 | 0 | 0 |
| Forfeited | (62,000) | 4.60 | 0 | 0 |
| Exercised | (83,000) | 3.00 | 0 | 0 |
| Exercisable at Jun. 30, 2014 | 621,500 | 3.36 | 8.0 | 0 |
| Outstanding at Jun. 30, 2014 | 2,507,500 | 4.06 | 8.2 | 33,602,125 |
| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares issued which are neither cancelled nor held in the treasury. No definition available.
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| X | ||||||||||
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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