Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Schedule of Valuation Assumptions Using a Black-Scholes Pricing Model (Detail)

v3.21.2
Stockholders' Equity - Schedule of Valuation Assumptions Using a Black-Scholes Pricing Model (Detail) - Stock options [Member]
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Minimum    
Class of Stock [Line Items]    
Volatility Rate 103.00% 89.00%
Risk-free interest rate 0.19% 0.32%
Expected Term 4 months 24 days 4 years 8 months 12 days
Maximum    
Class of Stock [Line Items]    
Volatility Rate 152.00% 102.00%
Risk-free interest rate 1.28% 1.50%
Expected Term 5 years 10 months 24 days 5 years 8 months 12 days