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Earnings per share (Tables) | 9 Months Ended
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Sep. 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 nine months ended September 30, 2016 and 2015.
|  | Three Months Ended September 30, |  | Nine Months Ended September 30, |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Net income (loss) attributable to Consolidated Water Co. Ltd. stockholders |  | $ | (1,865,332) |  | $ | 1,775,500 |  | $ | 2,393,642 |  | $ | 5,924,861 |
Less: preferred stock dividends |  |  | (2,680) |  |  | (2,937) |  |  | (8,921) |  |  | (9,118) |
Net income (loss) available to common shares in the determination of basic earnings per common share |  | $ | (1,868,012) |  | $ | 1,772,563 |  | $ | 2,384,721 |  | $ | 5,915,743 |
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,815,248 |  |  | 14,749,249 |  |  | 14,803,216 |  |  | 14,734,799 |
Plus: |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of preferred shares outstanding during the period |  |  | 37,719 |  |  | 40,194 |  |  | 38,516 |  |  | 38,510 |
Potential dilutive effect of unexercised options and unvested stock grants |  |  | - |  |  | 12,879 |  |  | 98,903 |  |  | 14,595 |
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,852,967 |  |  | 14,802,322 |  |  | 14,940,635 |  |  | 14,787,904 |

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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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