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Earnings per share (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Earnings Per Share [Line Items]    
Net income attributable to Consolidated Water Co. Ltd. common stockholders $ 654,909 $ 3,742,003
Less: preferred stock dividends (2,806) (2,232)
Net income available to common shares in the determination of basic earnings per common share $ 652,103 $ 3,739,771
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in shares) 14,686,744 14,598,096
Weighted average number of preferred shares outstanding during the period (in shares) 37,408 29,879
Potential dilutive effect of unexercised options (in shares) 42,833 7,359
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders (in shares) 14,766,985 14,635,334