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Accounting policies (Policies) | 9 Months Ended
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Sep. 30, 2013
Accounting Policies [Abstract] |
Basis of Accounting, Policy [Policy Text Block] | Basis of presentation: The accompanying condensed consolidated financial statements include the accounts of the Company’s (i) wholly-owned subsidiaries, Aquilex, Inc., Cayman Water Company Limited (“Cayman Water”), Consolidated Water (Belize) Limited (“CW-Belize”), Ocean Conversion (Cayman) Limited (“OC-Cayman”), DesalCo Limited (“DesalCo”), Consolidated Water Cooperatief, U.A. (“CW-Coop”); and (ii) majority-owned subsidiaries Consolidated Water (Bahamas) Ltd. (“CW-Bahamas”), N.S.C. Agua, S.A. de C.V. (“NSC”), Consolidated Water (Asia) Pte. Ltd. (“CW-Asia”) and PT Consolidated Water Bali (“CW-Bali”). The Company’s investment in its affiliate, Ocean Conversion (BVI) Ltd. (“OC-BVI”), is accounted for using the equity method of accounting. All significant intercompany balances and transactions have been eliminated in consolidation. The accompanying interim condensed consolidated financial statements are unaudited. These condensed consolidated financial statements reflect all adjustments (which are of a normal recurring nature) that, in the opinion of management, are necessary to fairly present the Company’s financial position, results of operations and cash flows as of and for the periods presented. The results of operations for these interim periods are not necessarily indicative of the operating results for future periods, including the fiscal year ending December 31, 2013. These condensed consolidated financial statements and notes are presented in accordance with the rules and regulations of the United States Securities and Exchange Commission (“SEC”) relating to interim financial statements and in conformity with accounting principles generally accepted in the United States of America (“US GAAP”). Certain information and note disclosures normally included in annual financial statements prepared in accordance with US GAAP have been condensed or omitted pursuant to SEC rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.
Foreign Currency Transactions and Translations Policy [Policy Text Block] | Foreign currency: The Company’s reporting currency is the United States dollar (“US$”). The functional currency of the Company and its foreign subsidiaries (other than its majority-owned subsidiary, NSC) is the currency for each respective country. The functional currency for NSC is the US$. The exchange rates between the Cayman Islands dollar, the Belize dollar, the Bahamian dollar, and the Bermuda dollar are fixed to the US$. CW-Coop conducts business in US$ and euros, CW-Bali conducts business in US$ and Indonesian rupiahs, and NSC conducts business in US$ and Mexican pesos. The exchange rates for conversion of euros, rupiahs and pesos into US$ vary based upon market conditions. Net foreign currency gains (losses) arising from transactions conducted in foreign currencies were ($117,309) and $24,590 for the three months ended September 30, 2013 and 2012, respectively, and were ($84,614) and $44,521 for the nine months ended September 30, 2013 and 2012, respectively, and are included within Other income (expense) in the condensed consolidated statements of income.
Comprehensive Income, Policy [Policy Text Block] | Comprehensive income: The Company accounts for comprehensive income (loss) in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 220, Comprehensive Income, which establishes standards for reporting and display of comprehensive income (loss) and its components in a full set of general-purpose financial statements. All items recognized under this statement of accounting standards as components of comprehensive income (loss) are required to be disclosed in the financial statements. Comprehensive income (loss) is defined as the change in equity during a period from transactions and other events from non-owner sources. Comprehensive income (loss) is the total of net income and other comprehensive income (loss) which, for the Company, is comprised entirely of foreign currency translation adjustments related to CW-Bali.
Reclassification, Policy [Policy Text Block] | Comparative amounts: Certain amounts reported in the financial statements issued in prior periods have been reclassified herein to conform to the current period’s presentation. These reclassifications had no effect on consolidated net income.

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- Definition Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS). + References No definition available. + Details
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- Definition Disclosure of accounting policy for comprehensive income. + References No definition available. + Details
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- Definition Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -URI http://asc.fasb.org/subtopic&trid=2175856 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2175826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2175892 + Details
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- Definition Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6359566&loc=d3e326-107755 + Details
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