XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.19.1

Subsequent events (Details Textual) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Subsequent Event [Line Items] |  |
Percentage Of Change in Price Per Gallon | 13.00% | 13.00%

X
- Definition The percentage of change in price per gallon. + References No definition available. + Details
Name: | cwco_PercentageOfChangeInPricePerGallon
Namespace Prefix: | cwco_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration