Geographic Segments (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Segment Reporting Information [Line Items]
Total assets	$ 379,887,560		$ 379,887,560		$ 162,573,392
Property and equipment, net	10,669,146		10,669,146		5,245,230
Revenues	482,226	$ 1,323,439	1,770,000	$ 2,449,415
(Loss) income before taxes	(35,558,123)	(59,320,358)	(156,847,565)	(99,997,414)
United States
Segment Reporting Information [Line Items]
Total assets	377,791,000		377,791,000		161,484,000
Property and equipment, net	10,590,000		10,590,000		5,166,000
Revenues	32,000	401,000	269,000	613,000
(Loss) income before taxes	(35,600,000)	(59,378,000)	(156,937,000)	(99,812,000)
Europe
Segment Reporting Information [Line Items]
Total assets	2,097,000		2,097,000		1,089,000
Property and equipment, net	79,000		79,000		$ 79,000
Revenues	450,000	922,000	1,501,000	1,836,000
(Loss) income before taxes	$ 42,000	$ 58,000	$ 89,000	$ (185,000)