Stockholders' Equity - Schedule of Unvested Stock Options (Detail) - $ / shares	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Beginning balance	84,990	138,160
Granted	1,291,016	30,000
Vested	(499,748)	(83,170)
Forfeited	(18,750)
Ending balance	857,508	84,990
Beginning balance	$ 11.35	$ 14.39
Granted	0.63	6.10
Vested	1.87	14.51
Weighted average exercise price unvested, Forfeited	0.61
Ending balance	0.98	11.35
Weighted average grant date fair value, Beginning balance	5.82	7.63
Weighted average grant date fair value, Granted	0.40	2.56
Weighted average grant date fair value, Vested	1.12	7.65
Weighted average grant date fair value, Forfeited	0.49
Weighted average grant date fair value, unvested, Ending balance	$ 0.52	$ 5.82