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Property, plant and equipment and construction in progress (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Capital Commitments	$ 309,000
Construction In Progress Placed In Service	4,924,980	278,214
Depreciation	$ 5,113,589	$ 7,381,759	$ 5,789,401

X

- Definition

Minimum amount of capital commitment.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the amount of construction in progress placed in service.

+ References

No definition available.

+ Details

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

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Details

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