Organization and operations (Details)	1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage decrease in company workforce	60.00%			60.00%
Number of reportable segments | segment				2
Net loss		$ 2,638,373	$ 9,332,113	$ 19,913,472	$ 26,405,131
Retained earnings (accumulated deficit)		(130,952,530)		(130,952,530)		$ (111,079,275)
Cash and cash equivalents		$ 12,961,126		$ 12,961,126