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Earnings per share (Tables) | 12 Months Ended
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Dec. 31, 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 respective years ended December 31:
|  | Year Ended December 31, |
|  | 2014 |  | 2013 |  | 2012 |
Net income attributable to Consolidated Water Co. Ltd. common stockholders |  | $ | 6,265,358 |  | $ | 8,594,519 |  | $ | 9,315,514 |
Less: preferred stock dividends |  |  | (11,485) |  |  | (11,222) |  |  | (9,080) |
Net income available to common shares in the determination of basic earnings per common share |  | $ | 6,253,873 |  | $ | 8,583,297 |  | $ | 9,306,434 |
Weighted average number of common shares in the determination of basic earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,697,896 |  |  | 14,633,884 |  |  | 14,578,518 |
Plus: |  |  |  |  |  |  |  |  |  |
Weighted average number of preferred shares outstanding during the period |  |  | 37,924 |  |  | 34,827 |  |  | 27,057 |
Potential dilutive effect of unexercised options |  |  | 28,503 |  |  | 35,169 |  |  | 573 |
Weighted average number of shares used for determining diluted earnings per common share attributable to Consolidated Water Co. Ltd. common stockholders |  |  | 14,764,323 |  |  | 14,703,880 |  |  | 14,606,148 |

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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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