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Represents the cost incurred to expand the plant capacity.

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Represents the volume of water that is supplied per day as per the agreement.

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The percentage of total interest in subsidiary after considering the effect of the profit sharing.

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Represents the equity method investments voting shares percentage.

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Amount of due from plaintiff in legal settlement recovery.

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Principle amount of due from the plaintiff as on the date specified.

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Plant capacity in gallons per day.

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This item represents the entity's share of profit or (loss) from its unconsolidated equity method investee.

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Represents the agreed-upon purchase price for the Baughers Bay plant under the 1990 Agreement.

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Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Amount of damages awarded to the plaintiff in the legal matter.

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Amount of damages paid to the plaintiff in the legal matter.

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Cash received for the settlement of litigation during the current period.

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Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

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Investment in OC-BVI (Details Textual) (USD $)	3 Months Ended			108 Months Ended	3 Months Ended	12 Months Ended			42 Months Ended
Investment in OC-BVI (Details Textual) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2003	Dec. 31, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2012	Mar. 04, 2010 gal	Dec. 31, 2007 gal
Schedule of Investments [Line Items]
Equity Method Investment, Ownership Percentage	43.50%
Equity Method Investments Voting Shares Percentage	50.00%
Equity Method Investment, Interest In Profit Percentage	45.00%
Other than Temporary Impairment Losses, Investments		$ 310,000us-gaap_ImpairmentOfInvestments
Equity Method Investments	5,000,083us-gaap_EquityMethodInvestments	5,208,603us-gaap_EquityMethodInvestments
Intangible assets, net	888,877	927,900
Income (Loss) from Equity Method Investments	75,155		54,489
Profit Loss From Subsidiaries	26,325cwco_ProfitLossFromSubsidiaries		20,250cwco_ProfitLossFromSubsidiaries
Sales Revenue, Services, Net	148,158us-gaap_SalesRevenueServicesNet		275,913us-gaap_SalesRevenueServicesNet
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	1,600,000
1990 Agreement [Member]
Schedule of Investments [Line Items]
Cost to Expand Production Capacity of Plant				4,700,000
Bar Bay Agreement [Member]
Schedule of Investments [Line Items]
Delivery Terms, Volume of water per day										600,000
Management Service [Member]
Schedule of Investments [Line Items]
Intangible assets, net	173,000	196,000
Ocean Conversion (BVI) Ltd [Member]
Schedule of Investments [Line Items]
Equity Method Investments	5,000,000
Loss Contingency, Damages Awarded, Value						10,400,000
Proceeds from Legal Settlements					2,000,000		1,000,000	2,000,000
Loss Contingency, Damages Paid, Value									5,000,000
Legal Settlement Recovery Principle Amount Due						5,400,000
Legal Settlement Recovery Due						6,700,000
Income (Loss) from Equity Method Investments	75,155		54,489
Profit Loss From Subsidiaries	26,325		20,250
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity	2,000,000
Ocean Conversion (BVI) Ltd [Member] \| 1990 Agreement [Member]
Schedule of Investments [Line Items]
Proceeds from Legal Settlements						4,700,000
Plant Capacity					1,700,000						720,000
Ocean Conversion (BVI) Ltd [Member] \| Management Service [Member]
Schedule of Investments [Line Items]
Sales Revenue, Services, Net	128,775		275,913
Baughers Bay [Member]
Schedule of Investments [Line Items]
Purchase Price Agreed for Plant Under Agreement	1,420,000								1,420,000
Bar Bay [Member]
Schedule of Investments [Line Items]
Assets that comprise Bar Bay plant	$ 4,900,000