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Dividends (Details) - $ / shares | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022
Dividends |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared | $ 0.11 | $ 0.095 | $ 0.085 | $ 0.11 | $ 0.095 | $ 0.095 | $ 0.095 | $ 0.085 | $ 0.085 | $ 0.085 | $ 0.085 | $ 0.085
Total | $ 0.41 | $ 0.36 | $ 0.34 |  |  |  |  |  |  |  |  |

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- Definition Aggregate interim dividends declared during the period for each share of common stock and redeemable preferred stock outstanding. + References No definition available. + Details
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Namespace Prefix: | cwco_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DividendsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant