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v2.4.1.9

Commitments and contingencies (Details Textual) (USD $) | 12 Months Ended | 1 Months Ended
--- | --- | ---
Dec. 31, 2014 gal | Dec. 31, 2013 | Dec. 31, 2012 | Jul. 29, 2011 gal
Commitments And Contingencies [Line Items] |  |  |  |
Operating Leases, Rent Expense, Net | $ 812,658 us-gaap_OperatingLeasesRentExpenseNet | $ 822,159 us-gaap_OperatingLeasesRentExpenseNet | $ 559,811 us-gaap_OperatingLeasesRentExpenseNet |
Royalty Payment Percentage | 36.00%cwco_RoyaltyPaymentPercentage | 36.00%cwco_RoyaltyPaymentPercentage | 37.00%cwco_RoyaltyPaymentPercentage |
Employment Agreement Base Annual Salaries | 3,100,000 cwco_EmploymentAgreementBaseAnnualSalaries |  |  |
Goodwill | 3,499,037 us-gaap_Goodwill | 3,499,037 us-gaap_Goodwill |  |
Retail Water Gross Profit Percentage | 53.00%cwco_RetailWaterGrossProfitPercentage | 52.00%cwco_RetailWaterGrossProfitPercentage | 58.00%cwco_RetailWaterGrossProfitPercentage |
Noncancellable Lease Term Expiration Date | 2032 |  |  |
Payments To Land Purchase Obligation | 10,050,000 cwco_PaymentsToLandPurchaseObligation | 0 cwco_PaymentsToLandPurchaseObligation | 0 cwco_PaymentsToLandPurchaseObligation |
Delivery Terms, Volume of water per day | 63,000,000 cwco_DeliveryTermsVolumeOfWaterPerDay |  |  |
Scenario, Forecast [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Payments To Land Purchase Obligation | 1,400,000 cwco_PaymentsToLandPurchaseObligation / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  |  |
Cw Belize [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Volume of Water to be supplied (per day) |  |  |  | 450,000 cwco_VolumeOfWaterToBeSupplied / us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis = cwco_CwBelizeMember
Retail Segment [Member] |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Goodwill | $ 3,499,037 us-gaap_Goodwill / us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis = cwco_RetailSegmentMember |  |  |

X
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- Definition Represents the volume of water that is supplied per day as per the agreement. + References No definition available. + Details
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Namespace Prefix: | cwco_
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Balance Type: | na
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- Definition Represents the base annual salary amount, under the employment agreement. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition It represents the expiration term of lease agreement. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The cash outflow associated with the land purchase obligation during the period. The cash portion only of the acquisition price. + References No definition available. + Details
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Namespace Prefix: | cwco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Represents the percentage of consolidated gross profit from retail water operations. + References No definition available. + Details
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- Definition Represents the royalty payment percentage. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Volume of water to be supplied as per the agreement. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Details
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- Details
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