Earnings per share (Tables)

3 Months Ended

Mar. 31, 2016

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, 2016 and 2015.

	Three Months Ended March 31,
	2016		2015
Net income attributable to Consolidated Water Co. Ltd. stockholders	$	2,054,641	$	1,921,261
Less: preferred stock dividends		(2,850)		(2,763)
Net income available to common shares in the determination of basic earnings per common share	$	2,051,791	$	1,918,498
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		14,783,380		14,718,757
Plus:
Weighted average number of preferred shares outstanding during the period		38,584		36,840
Potential dilutive effect of unexercised options		42,161		8,572
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		14,864,125		14,764,169