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Earnings per share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Line Items]
Net income attributable to Consolidated Water Co. Ltd. stockholders	$ 2,204,333	$ 2,228,100	$ 4,258,974	$ 4,149,361
Less: preferred stock dividends	(3,390)	(3,418)	(6,241)	(6,181)
Net income available to common shares in the determination of basic earnings per common share	$ 2,200,943	$ 2,224,682	$ 4,252,733	$ 4,143,180
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders Plus:	14,792,053	14,736,057	14,787,716	14,727,455
Weighted average number of preferred shares outstanding during the period	39,255	38,459	38,919	37,654
Potential dilutive effect of unexercised options	39,811	18,782	37,156	15,160
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders	14,871,119	14,793,298	14,863,791	14,780,269

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