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