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Earnings per share (Tables) | 9 Months Ended
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Sep. 30, 2014
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 and nine months ended September 30, 2014 and 2013.
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2014 |  | 2013 |  | 2014 |  | 2013 |
Net income attributable to Consolidated Water Co. Ltd. Common stockholders |  | $ | 1,882,692 |  | $ | 908,690 |  | $ | 5,297,294 |  | $ | 7,504,542 |
Less: preferred stock dividends |  |  | (2,777) |  |  | (2,885) |  |  | (8,722) |  |  | (8,655) |
Net income available to common shares in the determination of basic earnings per common share |  | $ | 1,879,915 |  | $ | 905,805 |  | $ | 5,288,572 |  | $ | 7,495,887 |
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,700,939 |  |  | 14,644,740 |  |  | 14,695,446 |  |  | 14,626,755 |
Plus: |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of preferred shares outstanding during the period |  |  | 39,348 |  |  | 39,680 |  |  | 38,256 |  |  | 33,888 |
Potential dilutive effect of unexercised options |  |  | 23,627 |  |  | 50,496 |  |  | 30,425 |  |  | 21,543 |
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,763,914 |  |  | 14,734,916 |  |  | 14,764,127 |  |  | 14,682,186 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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