Segment information - Revenues earned by major geographic region and major customer (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenue	$ 94,104,972	$ 66,863,502
Cayman Islands [Member]
Segment Reporting Information [Line Items]
Revenue	30,375,985	24,935,746
Bahamas [Member]
Segment Reporting Information [Line Items]
Revenue	29,943,615	24,031,547
United States [Member]
Segment Reporting Information [Line Items]
Revenue	33,338,466	17,489,851
Management Services Agreement With OC-BVI [Membre]
Segment Reporting Information [Line Items]
Revenue	446,906	406,358
Water and Sewerage Corporation [Member]
Segment Reporting Information [Line Items]
Revenue	$ 29,943,615	$ 24,031,547
Percentage of consolidated revenues	32.00%	36.00%
One Customer [Member]
Segment Reporting Information [Line Items]
Revenue	$ 11,805,752
Percentage of consolidated revenues	13.00%	0.00%