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Contingencies (Details Textual)	3 Months Ended
	Mar. 31, 2016 USD ($) gal	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Jul. 29, 2011 gal
Commitments And Contingencies [Line Items]
Cayman Water Retail Operations, Percentage Of Gross Profit	56.00%	57.00%
Cayman Water Retail Operations, Percentage Of Revenue	42.00%	41.00%
Operating Income (Loss)	$ 1,716,045	$ 2,255,336
Property, plant and equipment, net	$ 54,817,803		$ 53,743,170
Royalty Percentage	7.50%
Cw Belize [Member]
Commitments And Contingencies [Line Items]
Delivery Terms, Volume of water per day | gal				450,000
CW-Bahamas Windsor Plant [Member]
Commitments And Contingencies [Line Items]
Revenue, Net	$ 1,300,000	1,500,000
Delivery Terms Volume Of Water Per Week | gal	16,800,000
CW Bali [Member]
Commitments And Contingencies [Line Items]
Plant Capacity | gal	790,000
Operating Income (Loss)	$ (147,000)	$ (161,000)
Property, plant and equipment, net	$ 3,100,000

X

- Definition

Represents the percentage of consolidated gross profit from Cayman Water retail operations.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of consolidated revenue from Cayman Water retail operations.

+ References

No definition available.

+ Details

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Namespace Prefix:	cwco_
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- References

No definition available.

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Data Type:	xbrli:stringItemType
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X

- Definition

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

+ References

No definition available.

+ Details

Name:	cwco_DeliveryTermsVolumeOfWaterPerDay
Namespace Prefix:	cwco_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	instant

X

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	cwco_
Data Type:	num:volumeItemType
Balance Type:	na
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X

- Definition

Plant capacity in gallons per day.

+ References

No definition available.

+ Details

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Data Type:	num:volumeItemType
Balance Type:	na
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X

- Definition

It represents the rate of percentage of sales revenue, the company pay as royalty.

+ References

No definition available.

+ Details

Name:	cwco_RoyaltyPercentage
Namespace Prefix:	cwco_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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X

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph a
-Article 5

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 8
-Article 7

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Details

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- Details

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- Details

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