Segment information (Details 2) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	$ 53,084,105	$ 53,743,170
Cayman Island [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	24,252,351	22,518,524
Bahamas [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	25,180,669	27,441,376
Belize [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	907,752	920,149
Indonesia [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	612,568	2,665,312
United States [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	1,978,321	0
All other country operations [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Net	$ 152,444	$ 197,809