XML 93 R66.htm IDEA: XBRL DOCUMENT v2.4.1.9

Intangible assets (Details Textual) (USD $)	1 Months Ended	12 Months Ended
	Feb. 29, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Amortization Period	1 year
Payment For Nsc Option Agreement		$ 0cwco_PaymenTforNscOptionAgreement	$ 0cwco_PaymenTforNscOptionAgreement	$ 300,000cwco_PaymenTforNscOptionAgreement
Option agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Payment For Nsc Option Agreement	300,000cwco_PaymenTforNscOptionAgreement / us-gaap_FinancialInstrumentAxis = cwco_OptionAgreementMember
Belize Water Production And Supply Agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Asset Amortization Period		23 years
Desal Co [Member]
Finite-Lived Intangible Assets [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / dei_LegalEntityAxis = cwco_DesalCoMember

X

- Definition

Represents the amortization period of finite lived intangible asset.

+ References

No definition available.

+ Details

Name:	cwco_FiniteLivedintangibleAssetAmortizationPeriod
Namespace Prefix:	cwco_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The cash outflow for NSC option agreement.

+ References

No definition available.

+ Details

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

X

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=cwco_DesalCoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=cwco_OptionAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=cwco_BelizeWaterProductionAndSupplyAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: