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Additional Paid-in Capital (Tables) | 6 Months Ended
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Jun. 30, 2012
Additional Paid-in Capital [Abstract] |
Additional paid-in capital |
|  | Warrants |  |  | Stock based compensation |  |  | Compensation options |  |  | Other paid-in capital |  |  | Total additional paid-in capital |
As of December 31, 2011 |  |  | 10,288 |  |  | $ | 5,065 |  |  | $ | 588 |  |  | $ | 8,729 |  |  | $ | 24,670 |
Warrant exercise |  |  | (464 | ) |  |  | - |  |  |  | - |  |  |  | 464 |  |  |  | - |
Stock options expensed |  |  | - |  |  |  | 442 |  |  |  | - |  |  |  | - |  |  |  | 442 |
Restricted stock units expensed |  |  | - |  |  |  | 1,550 |  |  |  | - |  |  |  | - |  |  |  | 1,550 |
Compensation options exercised |  |  | - |  |  |  | - |  |  |  | (294 | ) |  |  | 294 |  |  |  | - |
As of June 30, 2012 |  |  | 9,824 |  |  | $ | 7,057 |  |  | $ | 294 |  |  | $ | 9,487 |  |  | $ | 26,662 |
Warrant activity | Warrant activity is summarized in the following table:
|  | Warrants outstanding |  |  | Valuation |  |  | Weighted average exercise price per share |  |  | Weighted average remaining life (yrs.) |  |  | Intrinsic value |
As of December 31, 2011 |  |  | 15,850,238 |  |  | $ | 10,288 |  |  | $ | 3.45 |  |  |  | 3.7 |  |  | $ | 485 |
Exercised |  |  | (478,261 | ) |  | $ | (464 | ) |  |  |  |  |  |  |  |  |  |  |  |
As of June 30, 2012 |  |  | 15,371,977 |  |  | $ | 9,824 |  |  | $ | 3.49 |  |  |  | 3.3 |  |  | $ | 93 |
Compensation options | Compensation Options
|  | Compensation options outstanding |  |  | Valuation |  | Expiry date |  | Weighted average remaining life (yrs.) |
As of December 31, 2011 |  |  | 450,000 |  |  | $ | 588 |  |  |  |  |
Exercise |  |  | (225,000 | ) |  |  | (294 | ) |  |  |  |
As of June 30, 2012 |  |  | 225,000 |  |  | $ | 294 |  | Apr-13 |  |  | 0.8 |
Summary of the fair value of all awards issued under Vista's stock compensation plans |
|  | June 30, |  |  | December 31, |
|  | 2012 |  |  | 2011 |
Balance, beginning of period |  | $ | 5,065 |  |  | $ | 4,695 |
Stock options |  |  | 442 |  |  |  | 238 |
Restricted stock units |  |  | 1,550 |  |  |  | 132 |
Balance, end of period |  | $ | 7,057 |  |  | $ | 5,065 |
Summary of option activity | A summary of option activity under the Plan as of June 30, 2012 and changes during the quarter then ended is set forth in the following table:
|  | Number of shares |  |  | Weighted average exercise price per share |  |  | Weighted average remaining contractual term |  |  | Aggregate intrinsic value |
Outstanding - December 31, 2011 |  |  | 3,195,000 |  |  | $ | 3.27 |  |  |  | 2.73 |  |  | $ | 1,039 |
Outstanding - June 30, 2012 |  |  | 3,195,000 |  |  |  | 3.27 |  |  |  | 2.23 |  |  |  | 792 |
Exercisable - June 30, 2012 |  |  | 3,017,500 |  |  | $ | 3.25 |  |  |  | 2.12 |  |  | $ | 792 |
Unvested stock options |
|  | Number of shares |  |  | Weighted average grant-date fair value per share |  |  | Weighted average remaining amortization period (Years) |
Unvested - December 31, 2011 |  |  | 597,500 |  |  | $ | 1.60 |  |  |  |
Vested |  |  | (420,000 | ) |  |  | 1.51 |  |  |  |
Unvested - June 30, 2012 |  |  | 177,500 |  |  | $ | 1.82 |  |  |  | 0.29 |
RSU activity under LTIP |
|  | Number of units |  |  | Weighted average grant-date fair value |
Unvested - December 31, 2011 |  |  | 960,000 |  |  | $ | 3.84 |
Granted |  |  | 350,000 |  |  |  | 3.07 |
Unvested - June 30 , 2012 |  |  | 1,310,000 |  |  | $ | 3.63 |

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- Definition Tabular disclosure of share-based compensation plans that may be presented in a single table for outstanding, vested and expected to vest, and exercisable awards. The information that may be disclosed in this table may include, but is not limited to, number of shares, weighted average exercise price, weighted average remaining contractual life, and aggregate intrinsic value. + References No definition available. + Details
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- Definition A tabular disclosure of the excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. + References No definition available. + Details
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- Definition Tabular disclosure of the securities (Share based compensation) called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References No definition available. + Details
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