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Accounting policies (Policies) | 9 Months Ended
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Sep. 30, 2016
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-Cooperatief”), Consolidated Water U.S. Holdings, Inc. (“CW-Holdings”); and (ii) majority-owned subsidiaries Consolidated Water (Bahamas) Ltd. (“CW-Bahamas”), Aerex Industries, Inc. (“Aerex”), Consolidated Water (Asia) Pte. Limited, PT Consolidated Water Bali (“CW-Bali”) and N.S.C. Agua, S.A. de C.V. (“NSC”). 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, 2016. 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 in these condensed financial statements pursuant to SEC rules and regulations, although the Company believes that the disclosures made herein 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, 2015.
Foreign Currency Transactions and Translations Policy [Policy Text Block] | Foreign currency: The Company’s reporting currency is the United States dollar (“US$”). The functional currency of the Company and its foreign operating subsidiaries (other than NSC and CW-Cooperatief) is the currency for each respective country. Effective as of October 1, 2016, the Company changed the functional currency of CW-Bali to the US$ as further discussed in Note 9. The functional currency for NSC and CW-Cooperatief is the US$. The exchange rates for the Cayman Islands dollar, the Belize dollar and the Bahamian dollar are fixed to the US$. CW-Cooperatief 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 Mexican pesos into US$ vary based upon market conditions. Net foreign currency gains (losses) arising from transactions and re-measurements were $1,734 and ($388,456) for the three months ended September 30, 2016 and 2015, respectively, and $92,030 and ($660,989) for the nine months ended September 30, 2016 and 2015, respectively, and are included in “Other income (expense) - Other” in the accompanying condensed consolidated statements of income.
Comprehensive Income, Policy [Policy Text Block] | Comprehensive income: 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.
Cash and Cash Equivalents, Policy [Policy Text Block] | Cash and cash equivalents: Cash and cash equivalents consist of demand deposits and highly liquid deposits at banks with an original maturity of three months or less. Cash and cash equivalents as of September 30, 2016 and December 31, 2015 include $4.2 million and $13.6 million, respectively, of certificates of deposits with an original maturity of three months or less. Transfers from the Company’s bank accounts in The Bahamas and Belize to Company bank accounts in other countries require the approval of the Central Bank of the Bahamas and Belize, respectively. As of September 30, 2016, the equivalent United States dollar cash balances for deposits held in the Bahamas and Belize were approximately $6.6 million and $5.3 million, respectively.
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 cash and cash equivalents, including the policy for determining which items are treated as cash equivalents. Other information that may be disclosed includes (1) the nature of any restrictions on the entity's use of its cash and cash equivalents, (2) whether the entity's cash and cash equivalents are insured or expose the entity to credit risk, (3) the classification of any negative balance accounts (overdrafts), and (4) the carrying basis of cash equivalents (for example, at cost) and whether the carrying amount of cash equivalents approximates fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 305 -SubTopic 10 -Section 05 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6375392&loc=d3e26790-107797 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4273-108586 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 5: 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=68058157&loc=d3e18780-107790 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + 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=68058157&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 + 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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