7. Earnings Per Share (Details)	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Earnings Per Share Details
Weighted average common shares - basic	20,073	19,416
Incremental common shares attibutable to exercise of outstanding options and warrants	11,551	3,185
Weighted average common shares - diluted	31,624	22,601

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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+ Details