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Earnings per share (Tables) | 6 Months Ended
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Jun. 30, 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 for the three and six months ended June 30, 2016 and 2015.
|  | Three Months Ended June 30, |  | Six Months Ended June 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
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 |  |  | 14,792,053 |  |  | 14,736,057 |  |  | 14,787,716 |  |  | 14,727,455 |
Plus: |  |  |  |  |  |  |  |  |  |  |  |  |
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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- 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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