Name:	cwco_BusinessAcquisitionProFormaCostOfRevenue
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The pro forma general and administrative expense for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaGeneralAndAdministrativeExpenses
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The pro forma gross profit for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaGrossProfit
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The pro forma income attributable to non-controlling interests for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaIncomeAttributableToNonControllingInterests
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The pro forma income before income taxes for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaIncomeBeforeIncomeTaxes
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of proforma net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaIncomeEarningsPerShareBasic
Namespace Prefix:	cwco_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The amount of proforma net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

No definition available.

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Namespace Prefix:	cwco_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The pro forma income from operations for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

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Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The pro forma other income (expense), net for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaOtherIncomeExpenseNet
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The pro forma provision for (benefit from) income taxes for a period as if the business combination or combinations had been completed at the beginning of the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaProvisionForBenefitFromIncomeTaxes
Namespace Prefix:	cwco_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Business acquisition pro forma average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaWeightedAverageNumberOfDilutedSharesOutstanding
Namespace Prefix:	cwco_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	cwco_BusinessAcquisitionProFormaWeightedAverageNumberOfSharesOutstandingAbstract
Namespace Prefix:	cwco_
Data Type:	xbrli:stringItemType
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Period Type:	duration

Business acquisition pro forma number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

No definition available.

Name:	cwco_BusinessAcquisitionProFormaWeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix:	cwco_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Amount after tax of pro forma income from continuing operations as if the business combination had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1392-128463

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.