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Earnings per share
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]

5. Earnings per share

 

Earnings per share (“EPS”) are computed on a basic and diluted basis. Basic EPS is computed by dividing net income (less preferred stock dividends) available to common stockholders by the weighted average number of common shares outstanding during the period. The computation of diluted EPS assumes the issuance of common shares for all potential common shares outstanding during the reporting period and, if dilutive, the effect of stock options as computed under the treasury stock method.

 

The following summarizes information related to the computation of basic and diluted EPS for the three months ended March 31, 2013 and 2012.

 

    Three Months Ended March 31,  
    2013     2012  
Net income attributable to Consolidated Water Co. Ltd. common stockholders   $ 3,742,003     $ 2,342,666  
Less: preferred stock dividends     (2,232 )     (1,657 )
                 
Net income available to common shares in the determination of basic earnings per common share   $ 3,739,771     $ 2,341,009  
                 
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders     14,598,096       14,569,883  
Plus:                
Weighted average number of preferred shares outstanding during the period     29,879       22,292  
Potential dilutive effect of unexercised options     7,359       4,305  
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders     14,635,334       14,596,480