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Contingencies (Details Textual) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Apr. 30, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Commitments And Contingencies [Line Items]
Cayman Water Retail Operations, Percentage Of Gross Profit		56.00%	59.00%
Cayman Water Retail Operations, Percentage Of Revenue		39.00%	44.00%
WSC [Member]
Commitments And Contingencies [Line Items]
Accounts Receivable, Net		$ 16.9		$ 17.6
Subsequent Event [Member] | Consolidated Water Bahamas [Member]
Commitments And Contingencies [Line Items]
Accounts Receivable, Net	$ 11.6
Increase (Decrease) in Accounts Receivable	$ 7.4

X

- Definition

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

+ References

No definition available.

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- Definition

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

+ References

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- References

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X

- Definition

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 942
-SubTopic 210
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- Definition

The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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