Consolidated Statement of Comprehensive Loss - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (22,426,023)	$ 35,773,027	$ 24,702,714
Other comprehensive loss
Unrealized gain on available-for-sale investments	0	0	590
Total comprehensive (loss) income	$ (22,426,023)	$ 35,773,027	$ 24,703,304