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Earnings per share (Tables) | 6 Months Ended
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Jun. 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 six months ended June 30, 2014 and 2013.
|  | Three Months Ended June 30, |  | Six Months Ended June 30, |
|  | 2014 |  | 2013 |  | 2014 |  | 2013 |
Net income attributable to Consolidated Water Co. Ltd. Common stockholders |  | $ | 2,759,693 |  | $ | 2,853,850 |  | $ | 3,414,602 |  | $ | 6,595,853 |
Less: preferred stock dividends |  |  | (3,139) |  |  | (2,996) |  |  | (6,278) |  |  | (5,991) |
Net income available to common shares in the determination of basic earnings per common share |  | $ | 2,756,554 |  | $ | 2,850,854 |  | $ | 3,408,324 |  | $ | 6,589,862 |
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,698,499 |  |  | 14,636,916 |  |  | 14,692,654 |  |  | 14,617,613 |
Plus: |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of preferred shares outstanding during the period |  |  | 37,990 |  |  | 31,998 |  |  | 37,701 |  |  | 30,944 |
Potential dilutive effect of unexercised options |  |  | 23,670 |  |  | 15,601 |  |  | 33,703 |  |  | 11,036 |
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,760,159 |  |  | 14,684,515 |  |  | 14,764,058 |  |  | 14,659,593 |

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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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