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Earnings per share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

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. comon stockholders			14,635,334				14,596,480

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations.

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