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Segment information (Details 1) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 57,875,707 | $ 57,116,202 | $ 65,559,078
Cayman Islands [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 31,211,705 | 32,735,215 | 35,040,803
Bahamas [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 19,554,944 | 21,062,081 | 26,702,605
Indonesia [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 91,311 | 368,012 | 471,919
Belize [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 2,614,989 | 2,422,547 | 2,596,410
Management Services Agreement With OC-BVI [Membre] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 515,474 | 528,347 | 747,341
Water and Sewerage Corporation of the Bahamas [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 19,254,395 | $ 20,770,347 | $ 26,376,520
Percentage of total revenues | 33.00% | 36.00% | 40.00%
Water Authority - Cayman [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 7,477,101 | $ 8,369,627 | $ 9,901,996
Percentage of total revenues | 13.00% | 15.00% | 15.00%
United States [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 3,887,284 | $ 0 | $ 0

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