Earnings per share (Tables)

12 Months Ended

Dec. 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:

	Year Ended December 31,
	2016		2015		2014
Net income attributable to Consolidated Water Co. Ltd. stockholders	$	3,960,501	$	7,518,701	$	6,265,358
Less: preferred stock dividends		(11,563)		(12,028)		(11,485)
Net income available to common shares in the determination of basic earnings per common share	$	3,948,938	$	7,506,673	$	6,253,873
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		14,809,909		14,741,748		14,697,896
Plus:
Weighted average number of preferred shares outstanding during the period		37,706		38,612		37,924
Potential dilutive effect of unexercised options		96,413		47,395		28,503
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders		14,944,028		14,827,755		14,764,323