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Commitments and contingencies (Details) gal in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($) gal | Dec. 31, 2023 USD ($) | Dec. 31, 2022
Contingencies |  |  |
Purchase obligations | $ | $ 15.6 |  |
Percentage of consolidated revenue from Cayman Water retail operations | 24.00% | 17.00% | 27.00%
Percentage of consolidated gross profit from Cayman Water retail operations | 38.00% | 26.00% | 44.00%
Percentage of revenue collected paid | 7.50% |  |
CW-Bahamas |  |  |
Contingencies |  |  |
Accounts receivable | $ | $ 28.4 | $ 26.9 |
Percentage of delinquent account receivables | 81.00% | 80.00% |
Blue Hills Water Works Plant | CW-Bahamas |  |  |
Contingencies |  |  |
Gallons of water delivered per week | gal | 63.0 |  |
Windsor Water Plant | CW-Bahamas |  |  |
Contingencies |  |  |
Gallons of water delivered per week | gal | 16.8 |  |

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